CN110206210B - Fabricated composite floor slab and construction method thereof - Google Patents
Fabricated composite floor slab and construction method thereof Download PDFInfo
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- CN110206210B CN110206210B CN201910510208.0A CN201910510208A CN110206210B CN 110206210 B CN110206210 B CN 110206210B CN 201910510208 A CN201910510208 A CN 201910510208A CN 110206210 B CN110206210 B CN 110206210B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
- E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
- E04B5/28—Cross-ribbed floors
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Abstract
本发明提供了一种装配式复合楼板及其施工方法，涉及建筑施工技术领域，包括框架、压型钢板、第二混凝土层、轻质保温层、第一混凝土层以及若干个桁架；框架为矩形框，且下端设有托板；若干个桁架相互平行设置于轻质保温层与第一混凝土层内部。本发明提供的装配式复合楼板，采用在框架内设置若干个平行排布的桁架作为楼板的骨架，结合第二混凝土层、压型钢板以及第一混凝土层的设置有效的保证了承重强度，适合作为承重楼板进行使用，轻质保温层设置于第一混凝土层与压型钢板之间，保证了良好的保温性能，实现了良好的节能效果，有效的降低了楼板的整体重量，该复合楼板的使用能够实现楼板在施工过程中的快速安装，便于提高施工效率。
The invention provides a prefabricated composite floor slab and a construction method thereof, and relates to the technical field of building construction, comprising a frame, a profiled steel plate, a second concrete layer, a light-weight thermal insulation layer, a first concrete layer and several trusses; the frame is a rectangle. The frame is provided with a support plate at the lower end; a plurality of trusses are arranged parallel to each other in the light-weight thermal insulation layer and the inside of the first concrete layer. The prefabricated composite floor slab provided by the present invention adopts several trusses arranged in parallel in the frame as the skeleton of the floor slab, and combined with the setting of the second concrete layer, the profiled steel plate and the first concrete layer, the load-bearing strength is effectively guaranteed, and it is suitable for Used as a load-bearing floor, the lightweight insulation layer is arranged between the first concrete layer and the profiled steel plate, which ensures good insulation performance, achieves good energy-saving effect, and effectively reduces the overall weight of the floor. The use can realize the rapid installation of the floor slab during the construction process, which is convenient to improve the construction efficiency.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to an assembled composite floor slab and a construction method thereof.
Background
Through development in recent years, shared proportion is increasing day by day in the construction to the assembled structure, very big improvement the efficiency of construction, nevertheless still have a lot of problems, especially to the assembled floor, often have the dead weight great, the assembly rate is low, the inconvenient scheduling problem of transportation, be unfavorable for improving the construction progress on the one hand, also can consume great manpower and materials simultaneously, be unfavorable for realizing energy-concerving and environment-protective.
Disclosure of Invention
The invention aims to provide an assembly type composite floor slab and a construction method thereof, and aims to solve the technical problems of low construction efficiency and high energy consumption caused by overlarge weight of the existing assembly type floor slab in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the fabricated composite floor slab comprises a frame, profiled steel sheets, a second concrete layer, a light heat-insulating layer, a first concrete layer and a plurality of trusses; the frame is a hollow rectangular frame with a plate surface arranged along the vertical direction and penetrating up and down, and the lower end of the frame is provided with a supporting plate with a plate surface perpendicular to the vertical direction and extending inwards; the profiled steel sheet is arranged above the supporting plate and used for plugging a lower opening of the frame; the second concrete layer is arranged below the profiled steel sheet and the supporting plate; the light insulating layer is arranged above the profiled steel sheet and is positioned in the frame; the first concrete layer is arranged above the light heat-insulating layer and protrudes upwards out of the frame; a plurality of trusses are parallel to one side plate of the frame and are arranged between the light heat-insulating layer and the first concrete layer.
As further optimization, the truss comprises at least three longitudinal steel bars parallel to one side plate of the frame and a plurality of polygonal stirrups with vertexes respectively connected with the longitudinal steel bars, and the main shafts of the longitudinal steel bars are perpendicular to the planes of the polygonal stirrups.
As a further optimization, the polygonal stirrup is an equilateral triangle frame, and one vertex of the polygonal stirrup is arranged downwards.
As a further optimization, the truss further comprises hooks which are arranged at the lower ends of the polygonal stirrups and penetrate through the profiled steel sheet and extend into the second concrete layer.
As a further optimization, the bottom surface of the profiled steel sheet is also provided with a plurality of pegs extending downwards and located in the second concrete layer.
As a further optimization, the fabricated composite floor slab further comprises a first connecting sleeve arranged outside one side plate of the frame and used for being connected with the first connecting column at the top of the wall body and a second connecting sleeve arranged outside the other side plate of the frame and used for being connected with the second connecting column at the top of the other wall body, the second connecting sleeve and the first connecting sleeve are respectively positioned on two sides of the frame, and the bottom surface of the second connecting sleeve is flush with the top surface of the first connecting sleeve.
As a further optimization, the profiled steel sheet is a trapezoidal profiled steel sheet.
As a further optimization, the construction method of the fabricated composite floor slab comprises the following steps:
manufacturing a truss and a frame, manufacturing the truss and the frame, and connecting the truss and the frame;
pouring a first concrete layer, namely, putting the frame and the truss integrally on a pouring template in an inverted mode, and pouring the first concrete layer until the first concrete layer does not cover part of the truss;
installing a profiled steel sheet, namely forming a plurality of holes on the profiled steel sheet, wherein the plurality of holes correspond to the vertexes of one side of the polygonal stirrups, which are close to the profiled steel sheet, one by one, welding the end parts of the hooks, the polygonal stirrups, the profiled steel sheet and the truss into a whole, and connecting the supporting plate with the profiled steel sheet;
manufacturing a light insulating layer, namely filling a foaming material between the profiled steel sheet and the first concrete layer to form the light insulating layer;
and pouring a second concrete layer, namely placing the frame, the truss and the profiled steel sheet on the pouring template, and pouring the second concrete layer.
As a further optimization, the second concrete layer is poured by welding a plurality of studs perpendicular to the surface of the profiled steel sheet on the bottom surface of the profiled steel sheet.
As a further optimization, the manufacturing of the truss and the frame comprises the following steps: and manufacturing a truss, installing two side plates at two ends of the truss, and installing the other two side plates at two ends of the two side plates to form a frame.
The assembled composite floor slab provided by the invention has the beneficial effects that: according to the fabricated composite floor provided by the invention, the trusses arranged in parallel in the framework are used as the framework of the floor, the bearing strength is effectively ensured by combining the arrangement of the second concrete layer, the profiled steel sheet and the first concrete layer, the fabricated composite floor is suitable for being used as a bearing floor, the light heat-insulating layer is arranged between the first concrete layer and the profiled steel sheet, the good heat-insulating property is ensured, the good energy-saving effect is realized, the integral weight of the floor is effectively reduced, the rapid installation of the floor in the construction process can be realized by using the composite floor, and the construction efficiency is convenient to improve.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic partial sectional structural view of an assembled composite floor slab according to an embodiment of the present invention;
FIG. 2 is a schematic view of a partial enlarged structure of I in FIG. 1;
FIG. 3 is a front cross-sectional structural view of FIG. 1;
FIG. 4 is a left side cross-sectional structural view of FIG. 1;
FIG. 5 is a schematic structural view of the assembled composite floor slab and wall of FIG. 1;
FIG. 6 is a schematic top view of a first embodiment of the two fabricated composite floor slab joining structure of FIG. 1;
FIG. 7 is a front view of the connection structure of FIG. 6;
fig. 8 is a schematic front view of a second embodiment of the connection structure of two fabricated composite floor slabs shown in fig. 1.
In the figure: 100. a frame; 110. a support plate; 120. a stud; 130. a first connecting sleeve; 140. a second connecting sleeve; 200. a second concrete layer; 300. profiled steel sheets; 400. a light insulating layer; 500. a first concrete layer; 600. a truss; 610. longitudinal reinforcing steel bars; 620. a polygonal stirrup; 630. hooking; 710. a first connecting column; 720. a tongue-shaped steel plate; 730. cold-formed thin-walled steel.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 8 together, the fabricated composite floor slab according to the present invention will now be described. The fabricated composite floor comprises a frame 100, profiled steel sheets 300, a second concrete layer 200, a light heat-insulating layer 400, a first concrete layer 500 and a plurality of trusses 600; the frame 100 is a hollow rectangular frame with a plate surface arranged along the vertical direction and penetrating vertically, and the lower end of the frame 100 is provided with a supporting plate 110 with a plate surface perpendicular to the vertical direction and extending inwards; the profiled steel sheet 300 is arranged above the supporting plate 110 and used for plugging the lower opening of the frame 100; the second concrete layer 200 is disposed under the profiled steel sheet 300 and the pallet 110; the light insulating layer 400 is arranged above the profiled steel sheet 300 and is positioned in the frame 100; the first concrete layer 500 is disposed above the light insulating layer 400 and protrudes upward from the top surface of the frame 100; a plurality of trusses 600 are disposed between the light insulating layer 400 and the first concrete layer 500 in parallel to one side plate of the frame 100. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. The terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing and simplifying the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a number" means two or more unless specifically limited otherwise. The up-down direction in this embodiment corresponds to the state of the composite floor in the use process, and the side close to the first concrete layer 500 is up, and the side close to the second concrete layer 200 is down.
In this embodiment, the light insulating layer 400 is disposed between the second concrete layer 200 and the first concrete layer 500, so that the strength of the top surface and the bottom surface of the composite floor slab can be ensured, a good weight reduction effect can be achieved, the insulating performance of the composite floor slab is improved, a good energy-saving and environment-friendly effect is achieved, and the truss 600 is disposed inside the composite floor slab, so that the overall strength of the composite floor slab is improved, and a good framework effect is achieved. The profiled steel sheet 300 is in good rigid connection with the frame 100, so that the strength of the frame 100 is improved, the strength of the floor slab can be improved through the shape of the profiled steel sheet, and the good use performance of the composite floor slab is guaranteed. The frame 100 and the supporting plate 110 may be made of standard components such as angle steel or channel steel, or may be made of steel plates perpendicular to each other by welding, and in this embodiment, an angle steel member is used.
Compared with the prior art, the fabricated composite floor provided by the invention has the advantages that the plurality of trusses 600 arranged in parallel are arranged in the frame 100 and used as the framework of the floor, the bearing strength is effectively guaranteed by combining the arrangement of the second concrete layer 200, the profiled steel sheet 300 and the first concrete layer 500, and the fabricated composite floor is suitable for being used as a bearing floor, the light heat-insulating layer 400 is arranged between the first concrete layer 500 and the profiled steel sheet 300, so that the good heat-insulating property is guaranteed, the good energy-saving effect is realized, the overall weight of the floor is effectively reduced, the floor can be quickly installed in the construction process by using the fabricated composite floor, and the construction efficiency is convenient to improve.
Referring to fig. 1 to 4, in an embodiment of the fabricated composite floor slab according to the present invention, the truss 600 includes at least three longitudinal reinforcements 610 parallel to one side plate of the frame 100 and a plurality of polygonal stirrups 620 having vertexes respectively connected to the longitudinal reinforcements 610, and a major axis of the longitudinal reinforcements 610 is perpendicular to a plane where the polygonal stirrups 620 are located. The truss 600 is formed by combining longitudinal reinforcements 610 and polygonal stirrups 620, each vertex of the polygonal stirrups 620 is connected with one longitudinal reinforcement 610, and the plane where the polygonal stirrups 620 are located is perpendicular to the main axis of the longitudinal reinforcements 610. In the process of connecting the polygonal stirrup 620 and the longitudinal steel bar 610, the polygonal stirrup 620 is wound on the periphery of the longitudinal steel bar 610, and then the contact position of the polygonal stirrup 620 and the longitudinal steel bar 610 is welded or bound to complete the manufacture of the truss 600. In the actual use process, the composite floor slab is a flexural member, 500 layers of the first concrete layer are compressed, the profiled steel sheet 300 is pulled, and the truss 600 is used as a connecting piece to enable the composite floor slab and the profiled steel sheet to work cooperatively, so that the structural strength of the composite floor slab is ensured. A plurality of polygonal stirrups 620 are provided in the longitudinal direction of the longitudinal reinforcement 610 so as to reinforce the strength of the longitudinal reinforcement 610 in the longitudinal direction.
Referring to fig. 1 to 4, in an embodiment of the fabricated composite floor slab according to the present invention, the polygonal stirrup 620 is an equilateral triangle frame, and one vertex of the polygonal stirrup 620 is disposed downward. The polygonal stirrup 620 in the embodiment is in a triangular frame form, the triangle has good stability, the stability of the truss 600 can be guaranteed, the triangle is in an equilateral triangle form, one side of the triangle is parallel to the surface of the second concrete layer 200 and is located above the opposite vertex of the triangle, effective bearing on the upper load can be achieved, and bearing strength is guaranteed.
Referring to fig. 1 to 4 together, as an embodiment of the fabricated composite floor slab according to the present invention, the truss 600 further includes hooks 630 disposed at the lower ends of the polygonal stirrups 620 and penetrating through the profiled steel sheet 300 and extending into the second concrete layer 200. The crotch 630 that truss 600 lower extreme set up passes profiled sheet 300, is connected through the plug welding with profiled sheet 300, realizes respectively with truss 600 and profiled sheet 300's effective connection, guarantees good wholeness, is convenient for improve the structural strength of above-mentioned skeleton member. The upper portion of the truss 600 is connected to the first concrete layer 500, the lower end thereof is connected to the profiled steel sheet 300 through the hook 630, and the space between the second concrete and the profiled steel sheet 300 is used to accommodate the lightweight insulation layer 400, and the lightweight insulation layer 400 is in the form of a filling foam material and is used as a functional layer for thermal insulation, heat insulation, and sound insulation.
Referring to fig. 1 to 4, as an embodiment of the fabricated composite floor slab of the present invention, a plurality of studs 120 extending downward and located in the second concrete layer 200 are further disposed on the bottom surface of the profiled steel sheet 300. The stud 120 with the main shaft arranged along the vertical direction is welded on the bottom surface of the profiled steel sheet 300, the stud 120 is a standard component and is a component with a columnar rod body, one end of the stud 120 is also provided with an end head with the outer diameter larger than that of the columnar rod body, and the mechanical engaging force between the stud 120 and the second concrete layer 200 can be greatly enhanced due to the arrangement of the end head. Pour stud 120 in second concrete layer 200, second concrete layer 200 both is as the protective layer, also is as the flame retardant coating, and the mechanical interlock that sets up of first stud 120 can strengthen between profiled steel sheet 300 and the second concrete layer 200 guarantees joint strength.
Referring to fig. 3 to 5, as an embodiment of the fabricated composite floor slab provided by the present invention, the fabricated composite floor slab further includes a first connecting sleeve 130 disposed outside one side plate of the frame 100 and used for connecting with the first connecting column 710 at the top of the wall body, and a second connecting sleeve 140 disposed outside the other side plate of the frame 100 and used for connecting with the second connecting column at the top of the other wall body, the second connecting sleeve 140 and the first connecting sleeve 130 are respectively disposed at two sides of the frame 100, and the bottom surface of the second connecting sleeve 140 is flush with the top surface of the first connecting sleeve 130. The edge of the fabricated composite floor slab is a frame 100, each angular point adopts a welding connection mode, two ends of a truss 600 are respectively connected with the inner wall of the frame 100, a first connecting sleeve 130 welded on the outer side of the frame 100 is used for being sleeved on a first connecting column 710 at the top of a wall body, when the composite floor slab is arranged on both sides of one wall body, a first connecting sleeve 130 is arranged on one of the composite floor slabs, a second connecting sleeve 140 is arranged on one side surface of the other composite floor slab adjacent to the composite floor slab, the first connecting sleeve 130 is firstly sleeved on the first connecting column 710, then, the second connection sleeve 140 is sleeved on the second connection column on the other wall body, at this time, the second connection sleeve 140 is positioned above the first connection sleeve 130, and then concrete is poured in a gap formed between the two composite floor slabs and the top surface of the wall slab, so that the components are firmly connected to form a whole. This arrangement effectively prevents positional interference between the first coupling sleeve 130 and the second coupling sleeve 140 while securing the coupling strength. In addition, the first connecting sleeve 130 and the second connecting sleeve 140 are arranged according to the actual condition that the wall body is arranged below the first connecting sleeve 130 and the second connecting sleeve 140, a group of connecting sleeves can be correspondingly arranged on two sides of the composite floor slab, and a group of connecting sleeves can be arranged on the other two sides of the composite floor slab according to actual needs and is used for being connected with other wall boards.
As a specific embodiment of the fabricated composite floor slab provided by the present invention, the profiled steel sheet 300 is a trapezoidal profiled steel sheet 300. The cross section of the profiled steel sheet 300 has various forms, and a channel steel sheet having a trapezoidal wave-shaped cross section or an open square box steel sheet, which are suitable for the manufacture of a composite floor, are included in the profiled steel sheet 300. In this embodiment, a profiled steel sheet 300 with a trapezoidal cross section is adopted, the profiled steel sheet 300 is a galvanized thin steel sheet and has good corrosion resistance, the profiled steel sheet 300 is cold-rolled into a channel steel sheet with a trapezoidal cross section by a forming machine, and the product has the advantages of easiness in processing, light weight, high installation speed and the like.
As a specific embodiment of the fabricated composite floor provided by the present invention, a construction method of a fabricated composite floor includes the steps of:
manufacturing the truss 600 and the frame 100, namely manufacturing the truss 600, installing two side plates of the frame 100 at two ends of the truss 600, and installing the other two side plates of the frame 100 at two ends of the two side plates, namely forming the frame 100 by the four side plates, so as to finish manufacturing the truss 600 and the frame 100;
pouring the first concrete layer 500, namely, pouring the frame 100 and the truss 600 integrally on a pouring template, and pouring the first concrete layer 500 until the part of the truss 600 is submerged;
installing the profiled steel sheet 300, namely forming a plurality of holes in the profiled steel sheet 300, wherein the plurality of holes correspond to the vertexes of one side, close to the profiled steel sheet 300, of the polygonal stirrups 620 one by one, welding the end parts of the hooks 630 with the polygonal stirrups 620, the profiled steel sheet 300 and the truss 600 into a whole, and connecting the supporting plate 110 with the profiled steel sheet 300;
manufacturing a light insulating layer 400, namely filling a foaming material between the profiled steel sheet 300 and the first concrete layer 500 to form the light insulating layer 400;
and (3) pouring a second concrete layer 200, welding a plurality of studs 120 with main shafts perpendicular to the surface of the profiled steel sheet 300 on the bottom surface of the profiled steel sheet 300, and then placing the frame 100, the truss 600 and the profiled steel sheet 300 on a pouring template and pouring the second concrete layer 200.
The composite floor slab provided in the embodiment is a prefabricated module plate, is prefabricated in a factory and is produced in batch in a standardized manner. Firstly, the truss 600 is welded, after the truss 600 is welded, the two ends of the truss 600 are respectively welded with the side plates, then the two ends of the side plates are provided with the other two side plates, so that the four side plates form the frame 100, and the frame 100 and the truss 600 are manufactured.
In order to pour the first concrete layer 500 at the top and the second concrete layer 200 at the bottom, in the actual operation process, the truss 600 and the frame 100 are integrally placed on a pouring template in an inverted manner, concrete is poured until the part of the truss 600 is not covered, the truss 600 is maintained and formed, the profiled steel sheet 300 is connected with the supporting plate 110 through screws, the installation of the profiled steel sheet 300 is completed, then holes are formed in the profiled steel sheet 300 at the positions corresponding to the vertexes of the triangular frames, hooks 630 are placed into the holes for plug welding, and the hooks 630 are connected with the truss 600 and the profiled steel sheet 300. And then, filling a foaming material between the profiled steel sheet 300 and the first concrete layer 500 to realize the shaping of the light heat-insulating layer 400, finally, turning the whole components into a right-side form, pouring concrete to a position in contact with the profiled steel sheet 300 above, stopping pouring, and curing the second concrete layer 200.
In order to facilitate subsequent assembly type installation, a first connecting sleeve 130 is arranged on the outer side of one side plate of the composite floor slab, and if two sides of the composite floor slab are respectively connected with a first connecting column 710 on a wall body and a second connecting column on another wall body, a second connecting sleeve 140 is arranged on the outer side of one side of the composite floor slab, which is opposite to the first connecting sleeve 130. If the other side is connected to the composite floor, the second coupling sleeve 140 is not required.
Referring to fig. 6 to 7, as a specific embodiment of the fabricated composite floor slab according to the present invention, when there is no wall between the connection points of the two composite floor slabs, the two composite floor slabs may be connected by using tongue-shaped steel plates 720, the tongue-shaped steel plates 720 arranged along the vertical direction are respectively welded to the outer sides of the frames 100 of the two composite floor slabs on the two sides, the tongue-shaped steel plates 720 are connected by using bolts, and finally concrete is poured into the space between the two composite floor slabs to achieve effective connection between the composite floor slabs.
Referring to fig. 8, as a specific embodiment of the fabricated composite floor slab according to the present invention, when there is no wall between the connection points of the two composite floor slabs, the cold-formed thin-walled steel section 730 with an upward opening is welded on the lower portion of the outer side surface of the frame 100 in situ, and the screws arranged in the up-and-down direction are welded on the cold-formed thin-walled steel section 730, and then concrete is poured to be flush with the top surface of the composite floor slab, so as to achieve effective connection between the composite floor slabs.
The construction method of the fabricated composite floor slab provided by the invention comprises the steps of firstly welding the truss 600, then respectively welding two side plates at two ends of the truss 600, then welding the other two side plates between the end parts of the two side plates to realize the manufacture of the truss 600 and the frame 100, pouring the first concrete layer 500 after the welding parts are placed upside down, connecting the profiled steel sheet 300 with the supporting plate 110, pouring the first concrete layer 500 after the welding parts are placed upright, and finally injecting the foaming material to realize the forming of the light heat-insulating layer 400.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
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| CN110792220B (en) * | 2019-12-04 | 2024-12-31 | 上海泛太建筑设计有限公司 | A high-strength lightweight composite floor and floor layer system thereof |
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| CN112663848A (en) * | 2020-12-25 | 2021-04-16 | 天津华鹏住工科技有限公司 | Assembly type support-free template |
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| CN113356052A (en) * | 2021-07-28 | 2021-09-07 | 南通装配式建筑与智能结构研究院 | Novel steel bar truss superposed bridge deck and production method |
| CN113374168A (en) * | 2021-07-28 | 2021-09-10 | 南通装配式建筑与智能结构研究院 | Novel steel bar truss coincide floor |
| CN115095065A (en) * | 2022-08-02 | 2022-09-23 | 北京市燕通建筑构件有限公司 | A multifunctional prefabricated floor system |
| CN115075446A (en) * | 2022-08-02 | 2022-09-20 | 北京市燕通建筑构件有限公司 | Multi-functional assembled floor |
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