CN118128187A

CN118128187A - Jacking type reverse construction method

Info

Publication number: CN118128187A
Application number: CN202410173969.2A
Authority: CN
Inventors: 于德湖; 仝馨; 王录福; 仝利; 王贞军; 仝旭
Original assignee: Shandong Runguo Construction Industry Technology Co ltd
Current assignee: Shandong Runguo Construction Industry Technology Co ltd
Priority date: 2024-02-07
Filing date: 2024-02-07
Publication date: 2024-06-04
Also published as: WO2025001278A1

Abstract

The invention relates to a jacking type reverse construction method, which comprises the following steps: prefabricating vertical prefabricated components for assembling accessory block body structures in a factory; setting up a jacking system at a construction site, wherein the jacking system comprises a plurality of jacks, and each jack comprises a telescopic jacking rod; setting up a horizontal floor slab mould at a construction site; casting a horizontal floor slab forming a top roof on the horizontal floor slab mould; the floor construction steps comprise: in the step of assembling the vertical prefabricated components, firstly controlling the jacking rod corresponding to the position of the vertical prefabricated component assembled at present to retract, and after the vertical prefabricated component assembled at present is installed in place, controlling the corresponding jacking rod to extend out and support, and repeating the above processes until the assembly of all the vertical prefabricated components of the floor is completed. The construction method can reduce overhead operation, reduce cost and shorten construction period.

Description

Jacking type reverse construction method

Technical Field

The invention belongs to the technical field of constructional engineering, and particularly relates to a jacking type reverse construction method.

Background

In the traditional building construction process, the scaffold, the formwork, the pouring concrete and the like are generally required to be built layer by layer from the foundation from bottom to top, and the scaffold, the formwork and the like are required to be removed after the building is completed.

At present, many urban buildings are high-rise buildings, the traditional building construction method is used for constructing the buildings layer by layer from bottom to top, and the height of construction operation is increased along with the rise of the buildings, so that a large amount of high-altitude operation is needed in the high-rise building construction process, high-altitude transportation is needed for building materials, the construction process is complicated, a large amount of manpower and material resources are consumed, the whole construction period is long, the cost is very high, and in addition, the constructors need to perform a large amount of high-altitude operation, so that the urban building has high danger.

Disclosure of Invention

Aiming at the defects existing in the related art, the invention provides a jacking type reverse construction method, which can reduce the overhead operation, lower the cost and shorten the construction period.

The jacking type reverse construction method provided by the application comprises the following steps:

prefabricating vertical prefabricated components for assembling accessory block body structures in a factory according to design requirements;

setting up a jacking system on a foundation layer or a conversion layer of a construction site, wherein the jacking system comprises a plurality of jacks, each jack comprises a telescopic jacking rod, and the setting position of each jack corresponds to the installation position of a corresponding vertical prefabricated part so as to support and lift the corresponding vertical prefabricated part in the construction process;

Setting up a horizontal floor slab mould at a construction site, wherein the horizontal floor slab mould is used for pouring and forming a horizontal floor slab between layers, the upper surface of the horizontal floor slab mould is used as a construction layer, through holes are formed in the horizontal floor slab mould corresponding to all jacking rods, and the jacking rods can extend upwards or retract downwards through the through holes;

Top roof construction: the top of the control jacking rod is flush with the upper surface of the horizontal floor slab mould, and a horizontal floor slab forming a top layer top plate is poured on the horizontal floor slab mould;

top layer construction, including:

jacking the horizontal floor slab formed by casting at the previous time: controlling all jacking rods to extend out through the through holes and jacking the top plate of the top layer to a height greater than the height of the top layer from the upper surface of the horizontal floor slab die;

Assembling vertical prefabricated components: the vertical prefabricated parts for assembling the top layer are transported to the site to be assembled in sequence, in the assembling process, the jacking rods corresponding to the positions of the vertical prefabricated parts assembled at present are controlled to retract, the rest jacking rods still keep the jacking state, after the vertical prefabricated parts assembled at present are installed at the corresponding positions below the horizontal floor slab formed by casting at the previous time, the corresponding jacking rods are controlled to extend again to support the vertical prefabricated parts assembled at present, and according to the mode, the assembly of all the vertical prefabricated parts of the top layer is completed;

the lifting rod falls back: controlling all jacking rods to fall back to the top to be flush with the upper surface of the horizontal floor slab die;

Horizontal floor casting: pouring is carried out above the horizontal floor slab mould to form a horizontal floor slab, the upper surface of the horizontal floor slab forms the ground of the top layer, and the lower surface of the horizontal floor slab forms the ceiling of the secondary top layer;

And sequentially completing the construction from the secondary top layer to the bottom according to the top layer construction mode in the steps.

In some embodiments, a supporting seat is arranged at the bottom of each vertical prefabricated part corresponding to the position of the lifting rod, the height of the supporting seat is the same as the thickness of the horizontal floor slab to be poured, in the construction process, the lifting rod supports and lifts the vertical prefabricated parts through the supporting seat, after the assembly of all the vertical prefabricated parts of the current construction layer is completed, all the lifting rods are controlled to fall to the top to be flush with the upper surface of the horizontal floor slab mould, the horizontal floor slab is formed by casting on site on the upper surface of the horizontal floor slab mould, and the supporting seat and the horizontal floor slab are cast in situ to form a whole.

In some embodiments, in the step of lifting the horizontal floor slab formed by the previous pouring, the lifting height is: the distance between the lower surface of the horizontal floor slab formed by the previous pouring and the upper surface of the horizontal template mold is greater than the layer height of the current construction layer, the length of the exposed reinforcing steel bar at the bottom of the horizontal floor slab formed by the previous pouring and the thickness of the horizontal floor slab to be poured on the current construction layer.

In some embodiments, the jacks are hydraulic jacks, each hydraulic jack is independently provided with a hydraulic station, the lifting rods of each hydraulic jack can be synchronously and independently telescopic, and the error of synchronous movement of the hydraulic jacks is controlled within 1/500 of the maximum value of the horizontal distance between the hydraulic cylinders of any two adjacent hydraulic jacks in all the hydraulic jacks in the working state.

In some embodiments, the split design of the vertical prefabricated elements that make up the building structure is required to satisfy: during construction, the number of lifting rods supporting each vertical prefabricated member below the vertical prefabricated member is less than 10% of the total number of lifting rods in a working state.

In some embodiments, a reinforced outer frame system is established at a construction site, the reinforced outer frame system comprises a support frame which is built around the periphery of a building body, a plurality of horizontal limiting members are arranged on the support frame along the periphery direction of the building body, the horizontal limiting members can extend or retract along the horizontal direction, and the horizontal limiting members are propped against the outer part Zhou Qiangmian of the building body when extending so as to limit the displacement of the building body in the horizontal direction in the construction process.

In some embodiments, the reinforced outer frame system further comprises a plurality of rolling members disposed around the periphery of the building body, the rolling surfaces of the rolling members being in contact with the peripheral wall surface of the building body and the plurality of rolling members cooperating with each other to limit the horizontal displacement of the building body during lifting, the rolling members being vertically level-different from the horizontal limiting members.

In some embodiments, the reinforced outer frame system further comprises a work platform disposed atop the support frame, the work platform being supported by the support frame and serving as a loading and construction platform during construction.

In some embodiments, the construction method further comprises the step of the jacking system demolishing the construction: after the construction of floors above the floor where the jacking system is located is completed, the jacking rods are controlled to jack the constructed building body part to be higher than the horizontal floor slab mould, the horizontal floor slab mould is removed, all the jacking rods are controlled to fall back to the elevation of the roof where the jacking system is located, the floor where the jacking system is located is constructed, gaps are reserved at the positions corresponding to the jacks, the upper layer and the lower layer are connected, the jacks are removed, the gap positions are repaired, and the removal construction of the jacking system is completed.

In some embodiments, in the process of setting up the jacking system, constructing a floor where the jacking system is located, reserving a gap corresponding to the position of a jack, arranging the jack in the gap, pouring the top floor of the floor where the jacking system is located at the top of the floor where the jacking system is located, forming an opening part for extending or retracting a jacking rod on the top floor, and arranging a horizontal floor die on the top floor of the floor where the jacking system is located;

The construction method further comprises the step of dismantling construction of the jacking system:

After the construction of more than two floors above the floor where the jacking system is located is completed, the jacking rod is controlled to jack the constructed building body to a height larger than the height of the upper floor of the floor where the jacking system is located, the horizontal floor slab mould is removed, vertical prefabricated parts forming the upper floor of the floor where the jacking system is located are assembled, all the jacking rods are controlled to fall back so that the bottoms of the vertical prefabricated parts of the upper floor of the floor where the jacking system is located are flush with the upper surface of the top floor of the floor where the jacking system is located, the upper floor and the lower floor are connected, the jack is removed, the gap position is repaired, and the removal construction of the jacking system is completed.

In some embodiments, the upper surface of the horizontal floor mold is formed by machining a mold having one or more decorative shapes, including, but not limited to: and one or more of a lamp holder, a lamp pool, a decorative line and a multi-stage suspended ceiling, and the lower ceiling surface of the horizontal floor slab formed by pouring can form a corresponding decorative model by utilizing the horizontal floor slab die.

In some embodiments, the horizontal floor forms have a temperature elevation system that can heat and cure concrete poured over the horizontal floor forms.

In some embodiments, the adjacent floors are connected by adopting a grouting sleeve, the grouting sleeve is in a half grouting form, the grouting sleeve is prefabricated at the top in the vertical prefabricated part forming process, the lower half part of the grouting sleeve is connected with the steel bars of the floor in the prefabricating process of the vertical prefabricated part in a non-grouting mode, and the upper half part of the grouting sleeve is connected with the steel bars of the previous floor in the floor construction process in a grouting mode.

In some embodiments, the inside of the grouting sleeve is hollow, the upper half of the grouting sleeve is formed with a grouting hole communicating with the inside, the grouting hole communicates with the outside of the vertical prefabricated member, and during grouting, the slurry is injected into the inside of the grouting sleeve through the grouting hole and overflows through an opening at the top of the grouting sleeve.

In some embodiments, in the construction process of each floor, in the process of installing the currently assembled vertical prefabricated part to the corresponding position, the reinforcing steel bar of the previous floor is inserted into the upper half part of the grouting sleeve inside the currently assembled vertical prefabricated part, the grouting sleeve of the currently assembled vertical prefabricated part is grouted after the assembly of the currently assembled vertical prefabricated part is completed, or the grouting sleeves of a plurality of adjacent vertical prefabricated parts are grouted in sequence after the assembly of the plurality of adjacent vertical prefabricated parts of the current construction layer is completed.

In some embodiments, a grout outlet is formed at the top of one or more vertical prefabricated components in the same floor, the grout outlet is communicated with the top opening of each grouting sleeve, grouting is sequentially performed on each grouting sleeve according to the sequence from far to near after one or more adjacent vertical prefabricated components in the current construction layer are assembled or all vertical prefabricated components in the current construction layer are assembled, grouting is performed on the current grouting sleeve after each grouting process observes that the grout outlet is out of the grout outlet, and grouting of the next grouting sleeve is performed.

In some embodiments, a concave portion is formed on the top of the vertical prefabricated member, and the concave portion penetrates through the top of the vertical prefabricated member in the width direction, so that a slurry outlet channel which is communicated with each other is formed on the top of the vertical prefabricated member adjacent to the same floor, and the slurry outlet channel is communicated with the slurry outlet hole.

In some embodiments, during construction, the vertical prefabricated elements are transported to the construction site using a universal transport vehicle, the wheels of which are made of Mecanum wheels, the universal transport vehicle further comprising hydraulic rods for supporting the vertical prefabricated elements on both sides, respectively.

In some embodiments, the currently assembled vertical prefabricated elements are hoisted to the corresponding positions by a hoisting method, in particular: lifting equipment is respectively installed on two sides of the vertical prefabricated part of the previous floor, lifting seats are correspondingly installed on two sides of the vertical prefabricated part assembled at present, lifting hooks of the lifting equipment are respectively connected with the corresponding lifting seats, the bottom of the vertical prefabricated part corresponding to the previous floor is lifted and assembled by the vertical prefabricated part assembled at present, and lifting holes for the lifting hooks and lifting ropes of the lifting equipment to pass through are formed in the horizontal floor.

Compared with the prior art, the invention has the advantages and positive effects that:

(1) According to the construction method provided by at least one embodiment of the application, the construction is sequentially carried out downwards from the top layer by adopting a reverse construction method, each layer is assembled on a structural main body above a base layer or a conversion layer, and the layers 2-3 above the base layer or the conversion layer are subjected to fine decoration; the lifting mode is reasonably designed to finish the construction of the whole building, the high-altitude operation is basically not needed in the construction process, various facilities needed by the high-altitude operation are not needed, the construction process is simplified, the construction period is greatly shortened (the construction period can be shortened by nearly half), the labor cost of the high-altitude operation is saved, the safety risk is reduced, the assembly line construction of the building is realized, and the engineering cost is greatly saved;

(2) According to the construction method provided by at least one embodiment of the application, the reverse construction method is adopted to carry out construction in combination with jacking, the whole building does not need to be provided with vertical transportation equipment, no outer wall protection exists, no template scaffold system exists, almost no wet operation exists on site, the labor consumption is reduced by more than 50%, the wood is saved by 100%, the water is saved by more than 80%, the construction waste is reduced by more than 90%, the carbon emission is reduced by 80%, and the energy conservation and the environment friendliness are realized.

(3) According to the construction method provided by at least one embodiment of the application, as all the vertical components are produced in a factory, and all the horizontal components use one set of die, the error precision of the vertical components of the whole building is less than or equal to 2mm, and the horizontal components have zero error, so that the engineering quality is ensured to reach the excellent standard.

(4) According to the construction method provided by at least one embodiment of the application, each lifting rod in the lifting system can synchronously and independently stretch, so that the assembly of vertical prefabricated members of each floor is conveniently realized, other facilities are not required to be additionally built in the construction process to support the building body, the construction progress is improved, the construction period is shortened, and the construction cost is reduced;

(5) According to the construction method provided by at least one embodiment of the application, through holes for the jacking rods to pass through are formed on the horizontal floor slab mould, and the horizontal floor slab mould is matched with the jacking rods in the floor construction process to realize the construction of each floor;

(6) According to the construction method provided by at least one embodiment of the application, various decorative modeling molds are formed on the horizontal floor molds, so that corresponding decorative modeling can be directly formed on the ceiling in the floor construction process, and the construction period and cost of later-stage indoor decoration are saved; the decorative modeling is formed by pouring concrete, so that the problems of cracking and the like can not occur in the later use process, repair or maintenance is not needed, the service life is long, and the cost is low;

(7) According to the construction method provided by at least one embodiment of the application, the horizontal displacement of the building body can be limited in the construction process through the reinforcement outer frame system, and the building body can be lifted more stably by matching with the jacking system, so that the structural safety is improved;

(8) According to the construction method provided by at least one embodiment of the application, the adjacent floors are connected by adopting the grouting sleeve, the traditional use method of the grouting sleeve is creatively changed, the unique grouting holes are arranged, the full slurry in each grouting sleeve after grouting is ensured, the difficult problem that the grouting sleeve is not full and cannot be detected for many years, which is puzzled by the engineering community, is solved, and the stable connection between the upper layer and the lower layer is realized;

(9) According to the construction method provided by at least one embodiment of the application, the specially designed universal transport vehicle is adopted to transport the vertical prefabricated part, the vertical prefabricated part is supported by the aid of the hydraulic rod, the universal transport vehicle can be controlled to move in any direction by the aid of the Mecanum wheels, and various transport requirements of a construction site are met.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

fig. 1a is a schematic diagram of executing step S4 in the jacking type reverse construction method according to the embodiment of the present application;

fig. 1b is a schematic diagram of performing step S51 in the jacking type reverse construction method according to the embodiment of the present application;

Fig. 1c is a schematic diagram one of executing step S52 according to the jacking type reverse construction method provided by the embodiment of the application;

fig. 1d is a schematic diagram two of executing step S52 according to the jacking type reverse construction method provided by the embodiment of the application;

fig. 1e is a schematic diagram of executing step S53 in the jacking type reverse construction method according to the embodiment of the present application;

FIG. 1f is a schematic diagram of a jacking type reverse construction method according to an embodiment of the present application after completing a multi-layer construction;

FIG. 1g is a schematic diagram II of a top layer construction by a jacking type reverse construction method according to an embodiment of the present application;

Fig. 1h is a schematic diagram III of performing secondary top layer construction by using a jacking type reverse construction method according to an embodiment of the present application;

FIG. 1i is a schematic diagram IV of a top-level construction by a jacking type reverse construction method according to an embodiment of the present application;

FIG. 1j is a schematic diagram II of a top-level construction by a jacking type reverse construction method according to an embodiment of the present application;

FIG. 2a is a schematic diagram of a horizontal floor mold according to an embodiment of the present application;

FIG. 2b is a schematic diagram of a horizontal floor mold according to an embodiment of the present application;

FIG. 3a is a schematic view of a grouting sleeve according to an embodiment of the present application;

FIG. 3b is a cross-sectional view of a grout sleeve according to embodiments of the present application;

FIG. 4a is a schematic illustration I of a connection of a vertical preform of a previous floor with a currently assembled vertical preform in an embodiment of the application;

FIG. 4b is a schematic diagram II of the connection of the vertical prefabricated elements of the previous floor to the currently assembled vertical prefabricated elements in an embodiment of the present application;

FIG. 4c is a third schematic illustration of the connection of a vertical preform of a previous floor with a currently assembled vertical preform in an embodiment of the application;

FIG. 4d is an enlarged view of a portion A of FIG. 4 b;

FIG. 4e is a partial cross-sectional view of the connection between the upper and lower floors through the grout sleeve according to embodiments of the present application;

FIG. 5a is a schematic view of a vertical preform with a grout sleeve disposed therein according to embodiments of the present application;

FIG. 5B is an enlarged view of a portion B of FIG. 5 a;

FIG. 6a is a schematic diagram of a top-up type reverse construction method according to an embodiment of the present application, in which a reinforcement outer frame system is provided at a construction site;

FIG. 6b is a front view of a jacking type reverse construction method provided by an embodiment of the present application, with a reinforced outer frame system provided at a construction site;

FIG. 6c is a schematic view of a portion of a reinforcement cage system with rolling elements engaged with an exterior wall of a building in accordance with an embodiment of the present application;

FIG. 6d is a partial schematic view of the horizontal stop member (retracted state) of the reinforcement cage system mated with the outer wall of the building in accordance with the present application;

FIG. 7a is a schematic diagram of a system for reinforcing an outer frame according to an embodiment of the present application;

FIG. 7b is an enlarged view of a portion C of FIG. 7 a;

FIG. 7c is an enlarged view of a portion D of FIG. 7 a;

Fig. 8a is a schematic diagram one of lifting vertical prefabricated members forming an outer wall of a building body according to a lifting type reverse construction method provided by an embodiment of the present application;

Fig. 8b is a schematic diagram II of lifting a vertical prefabricated member forming an outer wall of a building body according to the jacking type reverse construction method provided by the embodiment of the application;

fig. 9a is a schematic diagram one of lifting vertical prefabricated members forming an inner wall of a building body according to a lifting type reverse construction method provided by an embodiment of the present application;

Fig. 9b is a schematic diagram two of lifting vertical prefabricated members forming an inner wall of a building body by using a lifting type reverse construction method according to an embodiment of the present application;

FIG. 10a is a schematic diagram of a universal transporter in accordance with an embodiment of the present application;

FIG. 10b is a schematic diagram of a second embodiment of the present application;

FIG. 11a is a schematic diagram I of a jacking type reverse construction method for transporting a vertical prefabricated member according to an embodiment of the present application;

FIG. 11b is a schematic diagram II of a jacking type reverse construction method for transporting a vertical prefabricated member according to an embodiment of the present application;

FIG. 12 is a schematic diagram of a lifting type reverse construction method for constructing a floor where a lifting system is located according to an embodiment of the present application;

Fig. 13 is a flowchart of a jacking type reverse construction method according to an embodiment of the present application.

In the figure:

1. A building body; 10. a base layer or a conversion layer; 11. a vertical prefabricated member; 111. a support base; 1101. vertical prefabricated components of the previous floor; 1102. currently assembled vertical prefabricated components; 112. a recessed portion; 113. a pulp outlet hole; 114. a pulp outlet channel; 12. a horizontal floor slab; 121. a top plate; 122. a hoisting hole; 123. a top floor slab of a floor where the jacking system is located; 1231. an opening portion; 13. a void;

2. A jacking system; 21. a jack; 211. a lifting rod;

3. a horizontal floor mold; 31. the upper surface of the horizontal floor slab mold; 32. a through hole; 33. pouring a groove; 34. a mold; 341. a lamp holder mold; 342. a molding die;

4. grouting a sleeve; 41. grouting holes; 42. an opening;

5. reinforcing the outer frame system; 51. a support frame; 52. a horizontal limiting member; 53. a rolling member; 54. an operation platform;

6. a lifting device; 601. hoisting the base;

7. A universal transport vehicle; 71. mecanum wheel; 72. a hydraulic rod;

81. The floor steel bars; 82. a layer of steel bars are arranged on the upper floor;

Detailed Description

The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It is apparent that the drawings in the following description are only some examples or embodiments of the present application, and it is possible for those of ordinary skill in the art to apply the present application to other similar situations according to these drawings without inventive effort. Moreover, it should be appreciated that while such a development effort might be complex and lengthy, it would nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as having the benefit of this disclosure.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly and implicitly understood by those of ordinary skill in the art that the described embodiments of the application can be combined with other embodiments without conflict.

In the description of the present invention, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

The embodiment of the application provides a jacking type reverse construction method, which adopts an assembly type construction method to transport prefabricated building components and accessories of a factory to a construction site, adopts a reverse construction method for construction from top to bottom and is matched with a jacking mode to carry out construction of a building. As shown in fig. 13, the construction method at least includes the steps of:

S1, prefabricating a vertical prefabricated member 11 for containing accessory block body structures in a factory according to design requirements;

S2, as shown in FIG. 1a, a jacking system 2 is arranged on a foundation layer or a conversion layer 10 of a construction site, wherein the jacking system 2 comprises a plurality of jacks 21, each jack 21 comprises a telescopic jacking rod 211, and the arrangement position of each jack 21 corresponds to the installation position of the corresponding vertical prefabricated part 11 so as to support and lift the corresponding vertical prefabricated part 11 in the construction process;

S3, with further reference to FIG. 1a, setting up a horizontal floor slab mold 3 at a construction site, wherein the horizontal floor slab mold 3 is used for pouring and forming a horizontal floor slab 12 between layers, the upper surface 31 of the horizontal floor slab mold is used as a construction layer, through holes 32 are formed on the horizontal floor slab mold 3 corresponding to the lifting rods 211, and the lifting rods 211 can extend upwards or retract downwards through the through holes 32;

S4, top roof construction: as shown in fig. 1a, the top of the control lifting bar 211 is flush with the upper surface 31 of the horizontal floor mold, and the horizontal floor 12 forming the top roof 121 is cast over the horizontal floor mold 3;

S5, top layer construction, including:

S51, jacking a horizontal floor slab formed by previous pouring: all the lifting bars 211 are controlled to extend out through the through holes 32 and lift the top roof 121 to a height (considering the length of the bottom reinforcement of the vertical prefabricated elements 11 and the necessary construction height) greater than the height of the top floor from the upper surface 31 of the horizontal floor mold, as shown in fig. 1 b;

S52, assembling vertical prefabricated components: the vertical prefabricated parts 11 for assembling the top layer are transported to the site to be assembled in sequence, in the assembling process, the lifting rods 211 corresponding to the positions of the vertical prefabricated parts 11 which are assembled at present are controlled to retract, the rest lifting rods 211 still keep the lifting state, after the vertical prefabricated parts 11 which are assembled at present are installed at the corresponding positions below the horizontal floor slab which is formed by casting at the previous time, the corresponding lifting rods 211 are controlled to extend again to support the vertical prefabricated parts 11 which are assembled at present, as shown in fig. 1c to 1d, and in this way, the assembling of all the vertical prefabricated parts 11 of the top layer is completed;

S53, falling back of the lifting rod: controlling all the lifting bars 211 to fall back to the top flush with the upper surface 31 of the horizontal floor mould as shown in figure 1 e;

S54, pouring a horizontal floor slab: casting is carried out above the horizontal floor slab mold 3 to form a horizontal floor slab 12, the upper surface of the horizontal floor slab 12 forms the ground of the current construction layer (i.e. the top layer), and the lower surface of the horizontal floor slab 12 forms the ceiling of the next floor layer (i.e. the secondary top layer);

s6, sequentially completing construction from the secondary top layer to the bottom according to the top layer construction mode in S5, as shown in fig. 1 f-1 j.

According to the jacking type reverse construction method provided by the embodiment of the application, reverse construction is adopted to sequentially perform downward construction from the top layer, each layer is assembled on the foundation layer or the conversion layer and connected with the bottom of the upper layer, then the built floor is jacked as a whole, then the construction of the next layer is performed, and the cycle is performed until the construction of the whole building is completed. In the construction process of the jacking type reverse construction method provided by the embodiment of the application, the overhead operation is basically not needed, facilities needed by the overhead operation such as a tower crane, a scaffold and a safety protection facility are not needed, the construction process is simplified, the construction period is greatly shortened (the construction period can be shortened by nearly half), the labor cost of the overhead operation is saved, the safety risk is reduced, the assembly line construction of a building is realized, and the engineering cost is greatly saved. In addition, as all the vertical components are produced in a factory, and the horizontal components use one set of die, the error precision of the vertical components of the whole building is less than or equal to 2mm, the error of the horizontal components is zero, and the engineering quality is ensured to reach the excellent standard.

It will be appreciated that in the above method, only the steps related to the improvement of the present application are shown, not all the steps, and thus, each construction operation between steps or in each step is not seamless, and other necessary or unnecessary steps or construction operations may be interposed as needed. For example, after all vertical prefabricated components of the current construction layer are assembled, after all jacking rods are controlled to fall back to the top to be flush with the upper surface of the horizontal floor slab die, and before casting of the horizontal floor slab, necessary operations such as binding horizontal steel bars above the horizontal floor slab die are further included. Similarly, those skilled in the art may implement the improvement according to actual construction needs and specifications, and the prior art which is not related to the improvement of the present application is not described in the present application, but is not considered to be insufficient in disclosure.

It should be noted that, the standard floor in a building refers to a generic term of each floor in the building having a complete usage function and having the same layout, and in the description of the present application, the top floor refers to the highest floor in the standard floor. It will be appreciated that in some cases the top floor may not be an attic of a building, but that functional floors for setting up various types of equipment, such as machine room floors, etc., may also be formed on top of the top floor.

In some embodiments, after the construction of the top roof 121, before the construction of the top floor, the steps of S41, construction of the roof functional layer, specifically: functional rooms, e.g., machine rooms, etc., are assembled on top of the top roof 121. In addition, necessary or unnecessary structures such as stairway, fire water pond, parapet and the like can be installed according to the requirement.

The application provides the following two specific embodiments aiming at construction of the lifting system dismantling process.

In some examples of the first embodiment, the construction method further includes the step of S71 of lifting system demolition construction: after the construction of floors above the floor where the jacking system 2 is located is completed, the jacking rods 211 are controlled to jack the constructed building body part to be higher than the horizontal floor slab mold 3, the horizontal floor slab mold 3 is removed, all the jacking rods 211 are controlled to fall back to the jacking elevation of the floor where the jacking system 2 is located, the floor where the jacking system 2 is located is constructed, gaps 13 are reserved at positions corresponding to the jacks 21, upper and lower layers are connected, the jacks 21 are removed, the positions of the gaps 13 are repaired, and the removal construction of the jacking system 2 is completed. When the construction is performed according to the example of the present embodiment, the construction of the floor where the jacking system 2 is located is performed after the construction of the floor above it is completed.

In some examples of the second embodiment, as shown in fig. 12, in the process of setting up the jacking system 2, a floor where the jacking system 2 is located is constructed, a gap 13 is left corresponding to the position of the jack 21, the jack 21 is arranged in the gap 13, a top floor 123 forming the floor where the jacking system 2 is located is poured on top of the floor where the jacking system 2 is located, an opening 1231 for extending or retracting the jacking rod 211 is formed on the top floor 123, and the horizontal floor mold 3 is arranged above the top floor 123 of the floor where the jacking system 2 is located; the construction method further comprises the step of S72 of lifting the system to remove the construction: after the construction of more than two floors above the floor where the jacking system 2 is located is completed, the jacking rod 211 is controlled to jack the constructed floor body to a height larger than the height of the upper floor of the floor where the jacking system 2 is located, the horizontal floor slab mold 3 is removed, vertical prefabricated components forming the upper floor of the floor where the jacking system 2 is located are assembled, all the jacking rods 211 are controlled to fall back so that the bottom (without supporting seats) of the vertical prefabricated components forming the upper floor of the floor where the jacking system 2 is located is flush with the upper surface of the top floor slab 123 of the floor where the jacking system 2 is located, the upper and lower floors are connected, the jack 21 is removed, the gap 13 is repaired, and the removal construction of the jacking system 2 is completed. When the construction is performed according to the embodiment of the present embodiment, the construction of the partial building body of the floor where the jacking system 2 is located is performed before the top-level construction, the horizontal floor slab mold 3 may be fixedly installed on the top floor slab 123 of the floor where the jacking system 2 is located, and after the construction of all floors above the floor where the jacking system 2 is located is completed, the jacking system 2 is removed and the repairing of the void 13 is performed.

In the two embodiments of the demolishing construction of the jacking system, the construction of the floor where the jacking system 2 is located can be performed by adopting a mode of assembling vertical prefabricated components, and can be realized by other modes such as cast-in-place, and the application is not limited. When the vertical prefabricated parts are assembled, reserving an avoidance gap 13 corresponding to the setting position of the jack 21 in the prefabrication process of the vertical prefabricated parts forming the floor where the jacking system 2 is positioned, wherein the jack 21 is positioned in the gap 13 after the assembly; when the in-situ casting mode is adopted, a gap 13 is formed at the position where the jack 21 is located in the casting process, and the jack 21 is located in the gap 13 after casting. In addition, where not described in the above embodiments with respect to rebar junctions between upper and lower layers, etc., those skilled in the art may refer to the prior art,

According to the method provided in this embodiment, the lifting system 2 can be removed smoothly, and it is understood that, for convenience of construction, the height of the jack 21 in the retracted state of the lifting rod 211 is not greater than the floor height of one floor, so that the removal of the lifting system 2 only affects the construction of one floor.

In some embodiments, the jacks 21 are hydraulic jacks, each hydraulic jack is independently provided with a hydraulic station, the lifting rod 211 of each hydraulic jack can be synchronously and independently telescopic, and the error of synchronous movement of the hydraulic jacks is controlled within 1/500 of the maximum value of the horizontal distance between the hydraulic cylinders of any two adjacent hydraulic jacks in all the hydraulic jacks in the working state, so that the construction requirement for controlling the bending degree of the concrete is ensured to be met. Each hydraulic jack in the jacking system 2 can synchronously jack the constructed building body after the construction of each floor is completed, and can independently stretch and retract corresponding to the vertical prefabricated components 11 which are assembled at present in the assembly process of each vertical prefabricated component 11 of the construction floor, and can carry out stroke control and torque precise control in the independent stretch and retraction process.

In some embodiments, the number of hydraulic jacks and the weight to be born by each hydraulic jack are determined according to the total weight of the building, the load section of the hydraulic cylinder of the hydraulic jack is determined according to the working pressure and the lifting area of the hydraulic station, and the proper hydraulic jack is selected according to the load section. In the construction process according to the construction method of the present application, each jack 21 in the jacking system 2 is required to bear the weight of the constructed part of the entire building, and it is understood that the number of jacks 21 is calculated according to the total weight of the building when determining the number of jacks 21, that is, the number of jacks 21 is determined with a limit workload, and in the construction process, the number of jacks 21 in an operating state and the jacking force of the jacks 21 can be adjusted according to the weight of the completed part of the building, so as to realize jacking control for the constructed building. It should be noted that, the calculation method, such as structural mechanics, that is required in the present embodiment may be calculated based on the expert knowledge of those skilled in the art and the construction specification, and the detailed description of the specific calculation method is omitted.

In the construction process, the vertical prefabricated members 11 of the current construction layer are assembled in sequence, in each assembling process, the lifting rods 211 corresponding to the positions of the vertical prefabricated members 11 assembled at present are controlled to retract, so that the vertical prefabricated members 11 can be assembled to the corresponding positions smoothly, the size of the vertical prefabricated members 11 can influence the number of jacks 21 supported below the vertical prefabricated members, the number of jacks 21 retracted in each assembling process is influenced, and the stability of the lifting system 2 on building support in the retracting process is further influenced. That is, in the construction process, it is necessary to ensure that: when the lifting rod 211 supporting each vertical prefabricated member 11 below is retracted, the whole building is ensured to meet the requirements of the building construction in the design structural specification, and the structural stability is ensured.

Specifically, in some embodiments, the split design of the vertical prefabricated elements 11 constituting the building structure needs to satisfy: during construction, the number of lifting bars 211 supporting each vertical preform 11 below it is less than 10% of the total number of lifting bars 211 in operation. The requirement is provided for dividing the building body structure according to the structural safety at the beginning of construction, the forming of the vertical prefabricated components 11 is associated with the safety of the subsequent construction process, and the vertical prefabricated components 11 are prefabricated and formed according to the requirement, so that in the assembly process of each vertical prefabricated component 11 in the construction process, even if the corresponding lifting rod 211 is retracted, the building body structure is not damaged, and the structural safety in the construction process is ensured.

In some embodiments, a supporting seat 111 is arranged at the bottom of each vertical prefabricated member 11 at a position corresponding to the lifting rod 211, the height of the supporting seat 111 is the same as the thickness of the horizontal floor slab 12 to be poured, in the construction process, the lifting rod 211 supports and lifts the vertical prefabricated members 11 through the supporting seat 111, after the assembly of all the vertical prefabricated members 11 of the current construction layer is completed, all the lifting rods 211 are controlled to fall to the top to be flush with the upper surface 31 of the horizontal floor slab mold, the horizontal floor slab 12 is formed by casting on site on the upper surface 31 of the horizontal floor slab mold, and the supporting seat 111 and the horizontal floor slab 12 are cast in situ to form a whole. By arranging the supporting seat 111 with the same thickness as the horizontal floor slab 12 at the bottom of the vertical prefabricated part 11, when the top of the lifting rod 211 is level with the upper surface 31 of the horizontal floor slab die, the lower part of the vertical prefabricated part 11 is supported at the height of the upper surface of the horizontal floor slab 12, the cast-in-situ of the horizontal floor slab die 3 is not influenced, and the accurate control of the floor height can be realized. Alternatively, the support base 111 may be integrally formed with the vertical preform 11 in step S1. The shape of the support base 111 is not particularly limited in the present application, for example, the cross section of the support base 111 may be circular or square, as long as the height of the support base 111 is ensured to satisfy the above-mentioned requirements. Further, in some embodiments, a part of the surface of the horizontal floor slab mold 3 is recessed downward and protruded from the lower surface for binding the horizontal reinforcement therein, and the horizontal reinforcement is cast in place as one body with the horizontal floor slab after casting, in which case, it is understood that the thickness of the horizontal floor slab 12 is the entire thickness of the position where the horizontal reinforcement is built in, that is, the maximum thickness of the horizontal floor slab.

In order to shape the cast-in-place concrete, as shown in fig. 2a, the horizontal floor slab mold 33 has a pouring groove 33 recessed downward, concrete is cast in place in the pouring groove 33 and shaped to form the horizontal floor slab 12, and the upper surface of the bottom of the pouring groove 33 is the upper surface of the horizontal mold. It will be appreciated that the upper surface of the horizontal floor slab 12 cast using the horizontal floor slab mould 3 constitutes the floor of the upper floor slab and the lower surface constitutes the ceiling of the lower floor slab. Since the steel bars for realizing vertical connection are built in the vertical prefabricated parts 11, in order not to affect the vertical connection between the upper layer and the lower layer, steel bar holes are formed in positions corresponding to the steel bars on the horizontal floor slab mold 3, after all the vertical prefabricated parts 11 of the current construction layer are assembled, all the lifting rods 211 are controlled to descend to be flush with the upper surface 31 of the horizontal floor slab mold, at the moment, the steel bars at the bottom of the vertical prefabricated parts 11 pass through the horizontal floor slab mold 3 through the steel bar holes and then are exposed from the lower side of the horizontal floor slab mold 3, then concrete pouring is performed in the pouring groove 33 of the horizontal floor slab mold 3 to form the horizontal floor slab 12, and at the moment, the steel bars are fixed in the horizontal floor slab 12 and the exposed parts below are used for being connected with the next floor slab.

In some embodiments, a mold 34 having one or more decorative shapes formed by machining on the upper surface 31 of the horizontal floor mold, the decorative shapes including, but not limited to: such as one or more of a lamp socket, a lamp pool, a molding, and a multi-stage ceiling, a corresponding decorative molding can be formed by casting the lower surface of the molded horizontal floor 12 (i.e., the ceiling surface of the next floor) with the horizontal floor mold 3. As shown in fig. 2a and 2b, a mold 34 of a decorative shape is formed in the pouring groove 33 of the horizontal floor mold 3, for example, a socket mold 341 is formed at a central position corresponding to each room, a molding mold 342 is formed at a position corresponding to each side line, and a socket and a molding are formed on the ceiling of each floor after pouring. By forming the moulds 34 of various decorative models on the horizontal floor mould 3, the decorative effect is realized by the structural parts (the horizontal floor 12) of the building body, various decorative models can be formed in the building construction process, and the construction period and the cost of later indoor decoration are saved; because the horizontal floor slab 12 is formed by pouring concrete, the decoration shapes cannot crack in the later use process, and repair or maintenance is not needed, so that the service life is long and the cost is low; in addition, various decorative models are poured through the die 34, so that the molding quality is good, and the standardization degree is high. Fig. 2a and 3b show only a part of the horizontal floor mould, the rest of which can be referenced to the display part and supplemented according to the shape of the horizontal floor.

In some embodiments, the horizontal floor slab mold 3 is provided with a heating system, after pouring is performed on a construction site, concrete on the horizontal floor slab mold 3 can be heated and maintained through the heating system, solidification of the concrete is accelerated, long-time waiting is not needed, and construction period is effectively shortened. Specifically, the temperature increasing system may employ electric heating or other heating means.

In some embodiments, in order to fix the horizontal floor slab mold 3, the horizontal floor slab mold 3 may be fixedly connected with the top of the hydraulic cylinder of the jacking system 2, so that the horizontal floor slab mold 3 is supported above the hydraulic cylinder of the jacking system 2, which is convenient for fixing the horizontal floor slab mold 3, and since the position on the horizontal floor slab mold 3 corresponding to the jacking rod 211 is provided with the through hole 32, the lifting of the jacking rod 211 is not affected.

In some embodiments, in the step of lifting the horizontal floor slab formed by casting immediately before S51, the lifting height is: the distance between the lower surface of the horizontal floor slab 12 formed by the previous pouring and the upper surface of the horizontal template mold 3 is greater than the layer height of the current construction layer + the length of the exposed reinforcing steel bars at the bottom of the horizontal floor slab 12 formed by the previous pouring + the thickness of the horizontal floor slab to be poured on the current construction layer. The floor after construction is lifted to the height, so that sufficient construction height is provided for the current construction layer in the vertical direction, and the current construction can be ensured to be carried out smoothly. The height convenient for installing and binding the horizontal steel bars of the beams and the plates can be selected in the range according to the actual construction requirement by a person skilled in the art.

In some embodiments, the adjacent floors are connected by adopting a grouting sleeve 4, specifically, the grouting sleeve 4 is in a half grouting form, the grouting sleeve 4 is prefabricated at the top part in the vertical prefabricated part 11 in the forming process of the vertical prefabricated part 11, the lower half part of the grouting sleeve 4 is connected with the steel bar 81 of the floor in the prefabricating process of the vertical prefabricated part 11 in a non-grouting mode (such as a threaded connection mode and the like), and the upper half part of the grouting sleeve 4 is connected with the steel bar 82 of the previous floor in the grouting mode in the construction process of the floor. A plurality of grouting sleeves 4 can be arranged in each vertical prefabricated part 11 side by side, and the position of each grouting sleeve 4 is corresponding to the position of the upper floor steel bar 82; for example, two rows of the grouting sleeves 4 may be arranged side by side in the thickness direction of the vertical prefabricated parts 11, each row of the grouting sleeves 4 including a plurality of grouting sleeves 4 uniformly distributed in the width direction of the vertical prefabricated parts 11.

Specifically, as shown in fig. 3a and 3b, the inside of the grout sleeve 4 is hollow, the upper half of the grout sleeve 4 is formed with a grout hole 41 communicating with the inside, the grout hole 41 communicates with the outside of the vertical preform 11, and during grouting, grout is injected into the inside of the grout sleeve 4 through the grout hole 41 and overflows through an opening 42 at the top of the grout sleeve 4. The grouting sleeve 4 is selected from the existing half grouting sleeve 4 in the market at present, one end of the existing half grouting sleeve 4 in a non-grouting mode is downward and is connected with the floor steel bar 81 in a threaded mode and the like, then the grouting sleeve is built in the vertical prefabricated part 11, an original grouting hole is used as the grouting hole 41 in the embodiment, the original grouting hole 41 is closed, and the slurry injected into the grouting sleeve 4 through the grouting hole 41 can only flow out of the grouting sleeve 4 through the opening 42 at the top.

In the construction process of each floor, in the process of installing the currently assembled vertical prefabricated member 11 to the corresponding position, the steel bar 82 of the previous floor is inserted into the upper half part of the grouting sleeve 4 inside the currently assembled vertical prefabricated member 1102, grouting is performed on the grouting sleeve 4 of the currently assembled vertical prefabricated member 1102 after the assembly of the currently assembled vertical prefabricated member 1102 is completed, or grouting is performed on the grouting sleeves 4 of a plurality of adjacent vertical prefabricated members 11 in sequence after the assembly of a plurality of adjacent vertical prefabricated members 11 of the current construction layer is completed. After the slurry is solidified, the steel bars exposed below the upper floor are fixed in the grouting sleeve 4 of the lower floor, so that stable connection between the upper floor and the lower floor is realized.

In some embodiments, as shown in fig. 4a to 5b, a grout outlet 113 is formed at the top of one or more vertical prefabricated members 11 in the same floor, the grout outlet 113 communicates with the top opening 42 of each grouting sleeve 4, each grouting sleeve 4 is sequentially grouted in the order from far to near to the grout outlet 113 after one or more adjacent vertical prefabricated members 11 in the current construction layer are assembled or after all vertical prefabricated members 11 in the current construction layer are assembled, grouting of the current grouting sleeve 4 is completed after grouting of the grout outlet 113 is observed in each grouting process, and grouting of the next grouting sleeve 4 is completed. This way, it can be ensured that the slurry fills the inside of the grouting sleeve 4 and fills the passage communicating with the grout outlet 113 in each grouting process, improving the reliability of grouting connection between adjacent floors.

In the embodiment shown in fig. 4a to 4e, a plurality of grouting sleeves 4 are arranged side by side in the vertical prefabricated elements 11 at positions near the top, and the plurality of grouting sleeves 4 can be uniformly distributed in the width direction of the vertical prefabricated elements 11, so that stable connection can be provided at all positions at the top of the vertical prefabricated elements 11. After the vertical prefabricated elements 11 of the current construction level are hoisted to the corresponding positions, the steel bars 82 of the upper floor are fixed in the horizontal floor 12 after the horizontal floor 12 is cast-in-situ and extend out from the bottom of the horizontal floor 12. The steel bars extending out of the bottom of the horizontal floor slab 12 are inserted into the grouting sleeve 4 at the top of the vertical prefabricated part 11 of the current construction layer, and the slurry is injected into the grouting holes 41, so that the fixed connection is realized after the slurry is solidified. According to the construction condition, the grouting can be performed on each vertical prefabricated part 11 after the vertical prefabricated parts 11 are installed in place, the grouting can be performed on the vertical prefabricated parts 11 in the area after the assembly of a plurality of adjacent vertical prefabricated parts 11 in the current construction layer is completed, or the grouting can be performed on the vertical prefabricated parts 11 of the whole layer after the assembly of all the vertical prefabricated parts 11 in the current construction layer is completed.

In some embodiments, as shown in fig. 5a, a concave portion 112 is formed at the top of the vertical prefabricated element 11 to be concave downward, and the concave portion 112 penetrates through the top of the vertical prefabricated element 11 in the width direction, so that a pulp outlet channel 114 communicating with each other can be formed at the top of the vertical prefabricated element 11 adjacent to the same floor, and the pulp outlet channel 114 communicates with the pulp outlet hole 113. For example, the grout outlet 113 may be formed on a side wall of one side of the recess 112, and for convenience of construction, the grout outlet 113 may be prefabricated on each vertical prefabricated member 11, and in the field construction process, according to the construction condition, the unnecessary grout outlet 113 may be blocked, leaving only the required grout outlet 113 for observing the grout outlet condition.

In some embodiments, in step S72, grouting sleeves are provided in the top and bottom of the vertical prefabricated parts constituting the standard layer one layer, and after the vertical prefabricated parts constituting the standard layer one layer are assembled, the steel bars exposed from the top of the next layer of the standard layer one layer are inserted into the grouting sleeves at the bottom of the standard layer one layer in the falling process, and connection between the upper and lower layers is performed by grouting. Wherein the grouting method of the top grouting sleeve refers to the above embodiments; the upper half part of the bottom grouting sleeve is connected with the steel bars of the layer in a threaded mode and the like, and the lower half part is connected with the steel bars of the next layer of the standard layer in a grouting mode.

In some embodiments, as shown in fig. 6a to 7c, a reinforcing outer frame system 5 is set up at a construction site, the reinforcing outer frame system 5 includes a supporting frame 51 constructed around the outer circumference of the building body 1, a plurality of horizontal stoppers 52 are provided on the supporting frame 51 along the outer circumference of the building body 1, the horizontal stoppers 52 can be extended or retracted in the horizontal direction, and the horizontal stoppers 52 are pushed against the outer surface Zhou Qiangmian of the building body 1 when extended, thereby restricting the displacement of the building body 1 in the horizontal direction during the construction. The horizontal limiting member 52 may be implemented by using a hydraulic rod 72 disposed along a horizontal direction, and other manners may be implemented.

In some embodiments, referring further to fig. 7a and 7b, the reinforced outer frame system 5 further comprises a plurality of rollers 53 disposed around the outer periphery of the building body 1, the rolling surfaces of the rollers 53 in contact with the outer peripheral wall surface of the building body 1 and the plurality of rollers 53 cooperate to limit horizontal displacement of the building body 1 during lifting. In the lifting process of the building body, the horizontal limiting piece 52 can be controlled to retract, the limiting effect of the horizontal limiting piece 52 on the building body 1 is relieved, the adverse effect of the horizontal limiting piece 52 on the vertical displacement of the building body 1 is avoided, the rolling piece 53 can roll along with the displacement of the building body 1, the adverse effect on the vertical displacement of the building body 1 is avoided, the horizontal displacement of the building body 1 can be limited in the vertical displacement process of the building body, after the vertical displacement of the building body 1 is in place, the horizontal limiting piece 52 can be controlled to extend out of the peripheral wall surface of the building body 1, and the stability in the horizontal direction is further enhanced. Alternatively, the rolling member 53 may be a roller.

In some embodiments, as shown in fig. 7a, the reinforced outer frame system 5 further comprises a work platform 54 disposed on top of the support frame 51, the work platform 54 being supported by the support frame 51 and serving as a loading and construction platform during construction.

In the embodiment shown in fig. 6a to 6d, the reinforcing outer frame system 5 is erected at a position of two layers above the foundation layer or the conversion layer, the height is equal to the assembling position of the vertical prefabricated members, the jacking system 2 is arranged above the foundation layer or the conversion layer 10 below the ground, the supporting frame 51 of the reinforcing outer frame system 5 is erected around the periphery of the building body 1 and supports the working platform 54 at a certain height (a position about one layer of building height in the drawing) on the periphery of the building body 1, and the hollow and hollow shape of the working platform 54 is basically matched with the shape of the periphery of the building body 1 to facilitate the operation. The rolling elements 53 can be arranged on the surface of the working platform 54 facing the peripheral wall surface of the building body 1, the rolling elements 53 are uniformly arranged along the periphery of the building body 1, and the horizontal limiting elements 52 are arranged near the bottom of the supporting frame 51, so that the vertical height difference between the rolling elements 53 and the horizontal limiting elements 52 can be ensured, the horizontal limiting effect on the building body 1 can be realized in a certain height range under the combined action of the two, the limiting effect of the reinforcement outer frame system 5 is improved, and the stability of the building body structure and the construction safety are improved.

In some embodiments, during the assembly of the vertical prefabricated elements 11, the currently assembled vertical prefabricated elements 1102 are hoisted to the corresponding positions by means of hoisting. Specifically, as shown in fig. 8a to 9b, hoisting devices 6 are respectively installed at two sides of a vertical prefabricated member 1101 of a previous floor, hoisting seats 601 are correspondingly installed at two sides of a vertical prefabricated member 1102 which is assembled at present, lifting hooks of the hoisting devices 6 are respectively connected with the hoisting seats 601, and the vertical prefabricated member 1102 which is assembled at present is hoisted to the bottom of the vertical prefabricated member 1101 which corresponds to the previous floor for assembly. In order to facilitate the hoisting, the horizontal floor 12 is provided with a hoisting hole 122 through which the hook and the hoisting rope of the hoisting device 6 pass. As shown in fig. 8a and 8b, for the vertical prefabricated elements 11 constituting the outer wall of the building body, the hooks and hangers of the lifting apparatus 6 located on the outer wall surface may be directly connected to the hanging seats 601 of the vertical prefabricated elements 11 of the next floor without passing through the horizontal floor 12, and the hooks and hangers of the lifting apparatus 6 located on the inner wall surface may be connected to the hanging seats 601 of the vertical prefabricated elements 11 of the next floor through the hanging holes 122 of the horizontal floor mold 3. The hoisting device 6 may be an electric hoist or other device capable of hoisting.

In some embodiments, during construction, the vertical prefabricated elements 11 are transported to the construction site by means of the universal transporter 7, and as shown in fig. 10a and 10b, the wheels of the universal transporter 7 are Mecanum wheels 71, and the universal transporter 7 further comprises hydraulic rods 72 for supporting the vertical prefabricated elements 11 on both sides, respectively. As shown in fig. 11a and 11b, during transportation, the vertical prefabricated parts 11 are placed between the hydraulic rods 72 vertically, the hydraulic rods 72 respectively support the vertical prefabricated parts 11 from two sides by adjusting the pressure of the hydraulic rods 72, so that the vertical prefabricated parts 11 are supported, the movement of the universal transport vehicle 7 in any direction can be controlled by means of the mecanum wheels 71, and various transportation requirements of a construction site are met.

In some embodiments, in the construction process, the decoration materials such as floors, doors and windows and the like required by the current construction layer can be placed in floors before the current construction layer is constructed and lifted, and the vertical transportation cost of the decoration materials is saved when the decoration materials are lifted along with the floors in the lifting process.

Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.

Claims

1. The jacking type reverse construction method is characterized by comprising the following steps of:

setting up a lifting system on a foundation layer or a conversion layer of a construction site, wherein the lifting system comprises a plurality of jacks, each jack comprises a telescopic lifting rod, and the setting position of each jack corresponds to the installation position of the corresponding vertical prefabricated part so as to support and lift the corresponding vertical prefabricated part in the construction process;

setting up a horizontal floor slab mould at a construction site, wherein the horizontal floor slab mould is used for pouring and forming a horizontal floor slab between layers, the upper surface of the horizontal floor slab mould is used as a construction layer, a through hole is formed in the horizontal floor slab mould corresponding to each jacking rod, and the jacking rods can extend upwards or retract downwards through the through holes;

Top roof construction: controlling the top of the jacking rod to be flush with the upper surface of the horizontal floor slab die, and pouring a horizontal floor slab forming a top-layer top plate on the horizontal floor slab die;

top layer construction, including:

Jacking the horizontal floor slab formed by casting at the previous time: controlling all the jacking rods to extend out through the through holes and jacking the top plate to a height greater than the height of the top layer from the upper surface of the horizontal floor slab mold;

Assembling vertical prefabricated components: the vertical prefabricated parts for assembling the top layer are transported to the site to be assembled in sequence, in the assembling process, the jacking rods corresponding to the positions of the vertical prefabricated parts assembled at present are controlled to retract, the other jacking rods still keep the jacking state, after the vertical prefabricated parts assembled at present are installed at the corresponding positions below the horizontal floor slab formed by casting at the previous time, the corresponding jacking rods are controlled to stretch out again to support the vertical prefabricated parts assembled at present, and according to the mode, the assembly of all the vertical prefabricated parts of the top layer is completed;

The lifting rod falls back: controlling all the jacking rods to fall back to the top to be flush with the upper surface of the horizontal floor slab die;

2. The jacking type reverse construction method according to claim 1, wherein a supporting seat is arranged at the bottom of each vertical prefabricated component at a position corresponding to the jacking rod, the height of the supporting seat is the same as the thickness of the horizontal floor slab to be poured, in the construction process, the jacking rod supports and lifts the vertical prefabricated components through the supporting seat, after the assembly of all vertical prefabricated components of a current construction layer is completed, all the jacking rods are controlled to fall to the top to be flush with the upper surface of the horizontal floor slab die, the horizontal floor slab is formed on the upper surface of the horizontal floor slab die by in-situ pouring, and the supporting seat and the horizontal floor slab are cast in situ to form a whole.

3. The jacking reverse construction method according to claim 1, wherein in the step of jacking the horizontal floor slab formed by the previous casting, the jacking height is: the distance between the lower surface of the horizontal floor slab formed by the previous pouring and the upper surface of the horizontal template mold is greater than the layer height of the current construction layer, the length of the exposed reinforcing steel bar at the bottom of the horizontal floor slab formed by the previous pouring, and the thickness of the horizontal floor slab to be poured on the current construction layer.

4. The jacking type reverse construction method according to claim 1, wherein the jacks are hydraulic jacks, each hydraulic jack is independently provided with a hydraulic station, the jacking rod of each hydraulic jack can be synchronously and independently telescopic, and the error of synchronous movement of the hydraulic jacks is controlled within 1/500 of the maximum value of the horizontal distance between the hydraulic cylinders of any two adjacent hydraulic jacks in all the hydraulic jacks in the working state.

5. The jacking type reverse construction method according to claim 1, wherein the split design of the vertical prefabricated members constituting the building body structure is required to satisfy: during construction, the number of lifting rods supporting each vertical prefabricated member below the vertical prefabricated member is less than 10% of the total number of lifting rods in a working state.

6. The jacking type reverse construction method according to claim 1, wherein a reinforcement outer frame system is established at a construction site, the reinforcement outer frame system comprises a support frame which is established around the outer periphery of the building body, a plurality of horizontal limiting members are arranged on the support frame along the outer periphery direction of the building body, the horizontal limiting members can extend or retract along the horizontal direction, and the horizontal limiting members can bear against the outer Zhou Qiangmian of the building body when extending so as to limit the displacement of the building body in the horizontal direction during construction.

7. The jacking reverse construction method according to claim 6, wherein the reinforcement outer frame system further comprises a plurality of rolling members disposed around an outer periphery of the building body, rolling surfaces of the rolling members being in contact with an outer peripheral wall surface of the building body and the plurality of rolling members being engaged with each other to limit horizontal displacement of the building body during lifting, the rolling members being vertically level-different from the horizontal stoppers.

8. The jacking reverse construction method as claimed in claim 6, wherein the reinforcement cage system further comprises a work platform provided on top of the support frame, the work platform being supported by the support frame and used as a loading and construction platform during construction.

9. The jacking reverse construction method according to claim 1, further comprising the step of the jacking system demolishing construction: after the construction of floors above the floor where the jacking system is located is completed, the jacking rod is controlled to jack the constructed building body part to be higher than the horizontal floor slab die, the horizontal floor slab die is removed, all the jacking rods are controlled to fall back to the top of the jacking rod, the floor where the jacking system is located, a gap is reserved at the position, corresponding to the position of the jack, of the floor where the jacking system is located, upper and lower layers are connected, the jack is removed, the gap position is repaired, and the removal construction of the jacking system is completed.

10. The jacking type reverse construction method according to claim 1, wherein in the process of setting up the jacking system, construction is performed on a floor where the jacking system is located, a gap is reserved corresponding to the jack position, the jack is arranged in the gap, a top floor of the floor where the jacking system is located is formed by casting at the top of the floor where the jacking system is located, an opening part for extending or retracting a jacking rod is formed in the top floor, and the horizontal floor mold is arranged above the top floor of the floor where the jacking system is located;

After the construction of more than two floors above the floor where the jacking system is located is completed, the jacking rod is controlled to jack the constructed building body to a height larger than the height of the layer above the floor where the jacking system is located, the horizontal floor slab mould is disassembled, vertical prefabricated components forming the layer above the floor where the jacking system is located are assembled, all the jacking rods are controlled to fall back so that the bottoms of the vertical prefabricated components of the layer above the floor where the jacking system is located are flush with the upper surface of the top floor of the floor where the jacking system is located, the upper layer and the lower layer are connected, the jack is disassembled, the gap is repaired, and the demolishing construction of the jacking system is completed.

11. The jacking reverse construction method as claimed in claim 1, wherein the upper surface of the horizontal floor slab mold is formed with one or more decorative forms by machining, including but not limited to: and one or more of a lamp holder, a lamp pool, a decorative line and a multi-stage suspended ceiling, wherein the lower ceiling surface of the horizontal floor slab formed by casting can form a corresponding decorative model by utilizing the horizontal floor slab die.

12. The jacking reverse construction method according to claim 1, wherein the horizontal floor slab mold has a temperature raising system capable of heating and curing concrete poured on the horizontal floor slab mold.

13. The jacking type reverse construction method according to claim 1, wherein the adjacent floors are connected by adopting grouting sleeves, the grouting sleeves are in a half grouting mode, the grouting sleeves are prefabricated at the top in the vertical prefabricated part in the forming process of the vertical prefabricated part, the lower half parts of the grouting sleeves are connected with the steel bars of the floor in the prefabricating process of the vertical prefabricated part in a non-grouting mode, and the upper half parts of the grouting sleeves are connected with the steel bars of the previous floor in the grouting mode in the construction process of the floor.

14. The jacking reverse construction method according to claim 13, wherein the inside of the grouting sleeve is hollow, the upper half of the grouting sleeve is formed with a grouting hole communicating with the inside, the grouting hole communicates with the outside of the vertical prefabricated part, and during grouting, slurry is injected into the inside of the grouting sleeve through the grouting hole and overflows through the opening at the top of the grouting sleeve.

15. The jacking type reverse construction method according to claim 14, wherein in the construction process of each floor, in the process of installing the currently assembled vertical prefabricated member to the corresponding position, the steel bar of the previous floor is inserted into the upper half part of the grouting sleeve inside the currently assembled vertical prefabricated member, grouting is performed on the grouting sleeve of the currently assembled vertical prefabricated member after the assembly of the currently assembled vertical prefabricated member is completed, or grouting is performed on the grouting sleeves of a plurality of adjacent vertical prefabricated members in sequence after the assembly of the plurality of adjacent vertical prefabricated members of the currently constructed floor is completed.

16. The jacking type reverse construction method according to claim 15, wherein a grout outlet is formed in the top of one or more vertical prefabricated members on the same floor, the grout outlet is communicated with the top opening of each grouting sleeve, grouting is sequentially performed on each grouting sleeve in the order from far to near after assembly of one or more adjacent vertical prefabricated members in the current construction layer or assembly of all vertical prefabricated members in the current construction layer is completed, grouting of the current grouting sleeve is completed after grouting of the grout outlet is observed in each grouting process, and grouting of the next grouting sleeve is completed.

17. The jacking reverse construction method according to claim 16, wherein a concave portion is formed on the top of the vertical prefabricated member to be concave downward, the concave portion penetrates through the top of the vertical prefabricated member in the width direction to form a slurry outlet passage communicated with each other on the top of the vertical prefabricated member adjacent to the same floor, and the slurry outlet passage is communicated with the slurry outlet hole.

18. The jacking type reverse construction method according to claim 1, wherein during the construction process, the vertical prefabricated member is transported to a construction site by using a universal transport vehicle, wheels of the universal transport vehicle are made of Mecanum wheels, and the universal transport vehicle further comprises hydraulic rods for supporting the vertical prefabricated member on both sides respectively.

19. The jacking type reverse construction method according to claim 1, wherein the currently assembled vertical prefabricated member is hoisted to a corresponding position by adopting a hoisting method, in particular: lifting equipment is respectively installed on two sides of a vertical prefabricated part of a previous floor, lifting seats are correspondingly installed on two sides of the vertical prefabricated part assembled at present, lifting hooks of the lifting equipment are respectively connected with the corresponding lifting seats, the vertical prefabricated part assembled at present is lifted to the bottom of the vertical prefabricated part corresponding to the previous floor for assembly, and lifting holes for the lifting hooks and lifting ropes of the lifting equipment to penetrate through are formed in the horizontal floor.