CN105155689A - Connection node of precast slabs and construction method for laminated precast slabs - Google Patents
Connection node of precast slabs and construction method for laminated precast slabs Download PDFInfo
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- CN105155689A CN105155689A CN201510593349.5A CN201510593349A CN105155689A CN 105155689 A CN105155689 A CN 105155689A CN 201510593349 A CN201510593349 A CN 201510593349A CN 105155689 A CN105155689 A CN 105155689A
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- 238000010276 construction Methods 0.000 title claims description 17
- 230000002787 reinforcement Effects 0.000 claims abstract description 148
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 116
- 238000011065 in-situ storage Methods 0.000 claims description 45
- 238000005452 bending Methods 0.000 claims description 23
- 239000004033 plastic Substances 0.000 claims description 15
- 229920003023 plastic Polymers 0.000 claims description 15
- 230000000740 bleeding effect Effects 0.000 claims description 13
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 241001330002 Bambuseae Species 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 230000007306 turnover Effects 0.000 claims description 5
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- 238000012423 maintenance Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 22
- 238000013461 design Methods 0.000 abstract description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 description 26
- 230000008569 process Effects 0.000 description 24
- 230000000694 effects Effects 0.000 description 20
- 239000000463 material Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
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- 238000004873 anchoring Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000002708 enhancing effect Effects 0.000 description 5
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- 238000009877 rendering Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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Abstract
The invention provides a connection node of precast slabs. The connection node comprises a first precast slab and a second precast slab connected with the first precast slab, wherein a connection piece is arranged at the joint of the first precast slab and the second precast slab; the connection piece comprises a steel reinforcement framework; and the surface of the first precast slab, the surface of the second precast slab and the node between two slabs are cast into a whole through cast-in-place concrete. Therefore, the connection node in the structure is adopted at the spliced position of the precast slabs; reinforcing steel bars are made into the steel reinforcement framework; due to the fact that small-size cast-in-place is carried out at the spliced position of the precast slabs, if field fabrication is adopted, high labor cost is consumed; however, if a precast framework is adopted, mechanized mass production can be carried out in a workshop, so that the framework can be guaranteed to coincide with the design size, and at the same time, the production cost can be substantially reduced; and after the cast-in-place concrete is cast, the integrity and the anti-seismic property of precast and spliced floor slabs are substantially improved, so that under the influence of earthquake disasters, the situation of middle-part fracture cannot be caused, and the safety performance of a building is improved.
Description
Technical field
The present invention relates to a kind of assembled architecture component, particularly the construction method of a kind of precast plate connected node and superimposed precast plate.
Background technology
In assembled architecture, its component such as floor and wallboard is typically employed in prefabrication, then at the construction field (site) the connected node between prefabricated units is formed overall structure by poured in place concrete.In order to strengthen the globality connected between floor, the mode generally adopted is laminated floor slab, although the floor of laminated floor slab and overlapping layers globality are better, and the connected node place between precast plate, usually it is not firm to be connected between cast-in-situ concrete with precast plate, and globality is poor.
Summary of the invention
First technical problem that the present invention will solve is: provide a kind of precast plate connected node, it can improve the globality of building structure.
Second technical problem that the present invention will solve is: the construction method providing a kind of superimposed precast plate, it can improve the globality of building structure.
The solution of first technical problem of the present invention is achieved in that a kind of precast plate connected node, the second precast plate comprising the first precast plate and be connected with the first precast plate, the junction of described first precast plate and the second precast plate is provided with connector, described connector comprises cage of reinforcement, and the plate face of described first precast plate, the plate face of the second precast plate and connected node between the two form one by cast-in-situ concrete.So, precast plate mosaic adopts the connected node of said structure, and add cage of reinforcement in precast plate mosaic, and precast plate mosaic is that small size is cast-in-place, therefore situ wet operation is considerably less; In addition, cage of reinforcement as adopted field fabrication then at substantial cost of labor, and adopts precast framework, then at room machine batch making, can be conducive to ensureing that skeleton conforms to design size, significantly can reduce cost of manufacture simultaneously, improve efficiency of construction; After cast-in-situ concrete, iterative structure plate is defined after cast-in-situ concrete is combined with precast plate, by precast plate five equal build-ins of precast surface in cast-in-situ concrete, under the acting in conjunction of cage of reinforcement and cast-in-situ concrete, globality and the anti-seismic performance of prefabricated split floor can be increased substantially, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve globality and the security performance of building.
Another technical scheme of the present invention is on above-mentioned basis, and described connector also comprises exempts from hold mode, described in exempt from hold mode and comprise stencil body, at least one side of described stencil body is provided with flanging, and described cage of reinforcement is fixed on exempts from hold mode.So, precast plate mosaic adopts the connected node of said structure, wherein have employed integrated connector, after the side of its stencil body is provided with flanging, exempt from hold mode application process described, flanging can close with precast plate close contact, the plate face formed after flanging can contact with the surperficial forming surface of precast plate, effectively can prevent its spillage in casting process, if flanging to be converted into and stencil body is angle between 90 ° to 135 °, then can expand bonding tightness further, simultaneously, the plate face formed after its flanging can be shelved on the split face of precast plate, under the effect of working load, hold mode will be exempted from and precast plate compresses mortar leakage prevention.
Another technical scheme of the present invention is on above-mentioned basis, and described stencil body is steel plate, and described flanging is elastic telescopic face.So, stencil body is steel plate, and when described flanging is elastic telescopic face, flanging has extendable room, described in exempt from hold mode and be applied in precast plate split process, can make up and between precast plate, range error is set, can prevent the split of precast plate from connecting spillage.
Another technical scheme of the present invention is on above-mentioned basis, and described stencil body is bamboo slab rubber, wood glue plate or plastic plate.So, when stencil body is above-mentioned material, have cost low, wide material sources, when particularly adopting plastic plate, it has good plasticity and decay resistance, is conducive to applying.
Another technical scheme of the present invention is on above-mentioned basis, and the both sides of described stencil body are provided with elastic telescopic face, and described elastic telescopic face is that steel plate edge is compressed into fold and forms.So, the both sides of template are provided with elastic telescopic face, described elastic telescopic face is that steel plate edge is compressed into fold when forming, template processing technology is simple, flanging has extendable room, described hold mode of exempting from is applied in precast plate split process, can make up and between precast plate, range error is set, can prevent the split of precast plate from connecting spillage, and after application, template bottom also has corresponding fold accordingly, and what increased substantially its underpart whitewashes coating bonding surface, can prevent rendering layer from coming off.
Another technical scheme of the present invention is, on above-mentioned basis, described stencil body to be provided with bleeding aperture.So, stencil body is provided with bleeding aperture, described hold mode of exempting from is applied in the split process of precast plate, after Cast-in-place concrete pours into, a small amount of slurry can be secreted from bleeding aperture, thus the soffit at split position forms matsurface, what increased substantially its underpart whitewashes coating binding force, can prevent rendering layer from coming off; In addition, the existence of bleeding aperture, can also prevent the hollowing that the cast-in-place position of Nodes is formed due to air, reduces potential safety hazard.
Another technical scheme of the present invention is, on above-mentioned basis, described stencil body to be provided with reinforcing bar fixture.So; stencil body is provided with reinforcing bar fixture; described hold mode of exempting from is in the split process being applied to precast plate; the reinforcing bar at split position can by reinforcing bar fixture with exempt from hold mode and be connected; fully can ensure the cast-in-situ concrete protective layer thickness of reinforcing bar; meanwhile, also can by template firmly with bar connecting, prevent its template in the process of cast-in-situ concrete from falling because of the applying of working load.
Another technical scheme of the present invention is on above-mentioned basis, described reinforcing bar fixture and stencil body one-body molded.So, when reinforcing bar fixture and stencil body one-body molded time, only need reinforcing bar fixture to be made by punching press, considerably reduce manufacture difficulty and the cost of reinforcing bar fixture.
Another technical scheme of the present invention is on above-mentioned basis, and described reinforcing bar fixture is working of plastics.So, when adopting working of plastics as reinforcing bar fixture, reinforcing bar permanent position is adjustable, and reinforcing bar fixture reduces costs by batch making.
Another technical scheme of the present invention is on above-mentioned basis, and described working of plastics one end is the embedding mouth of reinforcing bar, is sold back to a grain-producing area till the other end.So, when working of plastics one end is the embedding mouth of reinforcing bar, be sold back to a grain-producing area till the other end, during described reinforcing bar fixture application, reinforcing bar can be snapped in reinforcing bar embedding mouth internal fixtion reinforcing bar, non-return pin inserts non-return in the hole that template is offered and fixes, construction technology is simple, reduces difficulty of construction.
Another technical scheme of the present invention is on above-mentioned basis, and described reinforcing bar fixture is reinforcing bar locating slot.So, stencil body is provided with reinforcing bar locating slot, described hold mode of exempting from is in the split process being applied to precast plate, the reinforcing bar at split position can by reinforcing bar locating slot with exempt from hold mode and be connected, reinforcing bar can be prevented to be shifted, convenient fixing to be installed, simultaneously, also can by template firmly with bar connecting, prevent its template in the process of cast-in-situ concrete from falling because of the applying of working load.
Another technical scheme of the present invention is, on above-mentioned basis, described stencil body to be provided with fin.So; after stencil body is provided with fin; the rigidity of template itself is greatly improved; the thickness of template can be reduced, meanwhile, can also template deformation be prevented; in addition; if fin horizontally set, can also use as steel bar spacer, can fully ensure concrete cover to reinforcement thickness.
Another technical scheme of the present invention is on above-mentioned basis, described fin and stencil body one-body molded, or described fin and stencil body divide body formed and described fin to be fixed on stencil body.So, when fin and stencil body one-body molded time, as adopt steel plate make template, then can be compressing by steel plate, manufacture craft is convenient and simple,
Another technical scheme of the present invention is, on above-mentioned basis, described fin to be provided with reinforcing bar locating slot.So, after fin is provided with reinforcing bar locating slot, in application process, reinforcing bar is placed in reinforcing bar locating slot, reinforcing bar can be prevented to be shifted, if arrange restraint device at reinforcing bar detent notch, then reinforcing bar firmly can be fixed in reinforcing bar detent, prevent reinforcing bar from moving further, effectively can ensure that the interior mechanics performance of cast-in-place structural is coincide with design.
Another technical scheme of the present invention is on above-mentioned basis, described cage of reinforcement comprises longitudinal reinforcement and transverse reinforcement, described longitudinal reinforcement is elongated reinforcing bar, transverse reinforcement is connecting reinforcement, described elongated reinforcing bar and connecting reinforcement are arranged in length and breadth and fixedly become cage of reinforcement, and described connecting reinforcement is provided with the turnover of at least two places.So, reinforcement fabrication is become cage of reinforcement, because precast plate mosaic is that small size is cast-in-place, as adopted field fabrication then at substantial cost of labor, and adopt precast framework, then can at room machine batch making, be conducive to ensureing that skeleton conforms to design size, significantly can reduce cost of manufacture simultaneously, and on connecting reinforcement, be provided with the turnover of at least two places, after building cast-in-situ concrete, by elongated reinforcing bar and connecting reinforcement, contiguous prefabricated plate is connected to form integral rigidity plate, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
Another technical scheme of the present invention is on above-mentioned basis, and described elongated reinforcing bar and connecting reinforcement are by being welded to connect into cage of reinforcement.So, when elongated reinforcing bar with connecting reinforcement by being welded to connect into cage of reinforcement time, the production efficiency of cage of reinforcement is high, can realize automatic production line and produce, significantly can reduce cost of labor, and secure and reliable connection, be conducive to large-scale promotion application.
Another technical scheme of the present invention is on above-mentioned basis, and described elongated reinforcing bar and connecting reinforcement connect into cage of reinforcement by colligation.So, when elongated reinforcing bar and connecting reinforcement connect into cage of reinforcement by colligation, in application process, local reinforcement location can be adjusted flexibly, so that arrange other pipelines or lose pre-buried, facilitate construction operation.
Another technical scheme of the present invention is on above-mentioned basis, and described connecting reinforcement end is provided with linkage.So, connecting reinforcement end is provided with linkage, when described cage of reinforcement is applied to precast plate mosaic, the linkage of connecting reinforcement end can be connected to each other with the reserved reinforcing bar exposed in precast plate, afterwards after concreting, contiguous prefabricated plate is connected to form integral rigidity plate by the cage of reinforcement of junction and cast-in-situ concrete, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
Another technical scheme of the present invention is on above-mentioned basis, and described linkage is the screw thread being arranged at connecting reinforcement end.So, when linkage is the screw thread being arranged at connecting reinforcement end, during described cage of reinforcement application, can be inserted in hole reserved on precast plate by arranging threaded end, after concreting, can connecting reinforcement be anchored in precast plate, and then, contiguous prefabricated plate is connected to form integral rigidity plate by the cage of reinforcement of junction and cast-in-situ concrete, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
Another technical scheme of the present invention is on above-mentioned basis, and described connecting reinforcement is or/and the end of elongated reinforcing bar is provided with pier nose.So, when connecting reinforcement or/and the end of elongated reinforcing bar is provided with pier nose, during described cage of reinforcement application, the end being provided with pier nose can be inserted in hole reserved on precast plate, or by pier nose by lockset by the bar connecting exposed pre-buried on precast plate, after concreting, can by elongated reinforcing bar or/and connecting reinforcement be anchored in precast plate, and then, contiguous prefabricated plate is connected to form integral rigidity plate by the cage of reinforcement of junction and cast-in-situ concrete, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
Another technical scheme of the present invention is on above-mentioned basis, and described connecting reinforcement two ends arrange bending section.So, connecting reinforcement two ends arrange bending section, and when described cage of reinforcement is applied to the split position of precast plate, after building cast-in-situ concrete, bending end can form good anchoring.
Another technical scheme of the present invention is on above-mentioned basis, and described connecting reinforcement is intersect after bending to form.So, connecting reinforcement is intersect after bending to form, and described cage of reinforcement is applied to precast plate mosaic, after concreting, increase on the one hand its with concrete contact area and with concrete adhesion, reach the effect of bonding strength enhancing; On the other hand, adopt interconnection muscle, effectively can regulate the bending angle of dowel, the minimizing of turning angle effectively can ensure that dowel has enough anchorage lengths, and test shows, the turning angle of staggered form dowel is less, and the overall performance of plate is stronger.
Another technical scheme of the present invention is on above-mentioned basis, and the bending angle scope of described connecting reinforcement is 20 °-60 °.So, connecting reinforcement is intersect after bending to form, and described cage of reinforcement is applied to precast plate mosaic, after concreting, increase on the one hand its with concrete contact area and with concrete adhesion, reach the effect of bonding strength enhancing; On the other hand, adopt interconnection muscle, effectively can regulate the bending angle of dowel, the minimizing of turning angle effectively can ensure that dowel has enough anchorage lengths, and test shows, the turning angle of staggered form dowel is less, and the overall performance of plate is stronger.
Another technical scheme of the present invention is on above-mentioned basis, and described connecting reinforcement is or/and elongated reinforcing bar is indented bars is made.So, adopt indented bars to make skeleton, indented bars has good anchoring property, can improve the antidetonation of precast plate mosaic cast-in-place concrete structure, fracture resistance.
Another technical scheme of the present invention is on above-mentioned basis, and described first precast plate and/or the second precast plate are hollow pre-fabricated panels or prestressing force precast plate.So, adopt hollow pre-fabricated panels can reduce the weight of floor, save material, meanwhile, the sound isolating and heat insulating performance of floor can be increased substantially, and adopt prestressing force precast plate, then can improve non-deformability and the weight bearing power of floor.
Another technical scheme of the present invention is on above-mentioned basis, the link of described first precast plate and/or the second precast plate is provided with step platform, elongated steel-bar arrangement is had on step platform in cage of reinforcement, connecting reinforcement part stretches in step platform, and cast-in-situ concrete is built and formed the superimposed connecting overall of T-shaped between precast plate.So, by cast-in-place T-shaped structure, precast plate is connected into overall structure, and the reinforcing bar in precast plate is or/and steel strand are longitudinally arranged, and can jointly form overall force structure by the cast-in-situ concrete of choosing outside step platform lower in part.
Another technical scheme of the present invention is on above-mentioned basis, and the vertical cross-section shape in step platform is vertical plane or inclined-plane, and choosing portion end surface outside described step platform lower is inclined-plane, has reinforcing bar or/and steel strand are longitudinally arranged in precast plate.So, the vertical cross-section shape in step platform is vertical plane or inclined-plane, and choosing portion end surface outside step platform lower is inclined-plane, cast-in-situ concrete can be allowed completely to water closely knit, not easily forms honeycomb hollowing, is conducive to the pouring quality improving cast-in-place T-shaped structure.
Another technical scheme of the present invention is on above-mentioned basis, chooses on portion end surface and be provided with the groove parallel with plate body outside described step platform lower.So, choose outside step platform lower on portion end surface and be provided with the groove parallel with plate body, after building cast-in-situ concrete, cast-in-situ concrete forms embedded structure in a groove, in earthquake disaster process, even if precast plate destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate ruptured from falling, improve the seismic seeurity of floor.
Another technical scheme of the present invention is on above-mentioned basis, and the link of described first precast plate and/or the second precast plate is provided with V-type notch or double V-groove.So, the link of the first precast plate and/or the second precast plate is provided with V-type notch or double V-groove, after building cast-in-situ concrete, cast-in-situ concrete forms embedded structure in V-type notch or double V-groove, in earthquake disaster process, even if precast plate destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate ruptured from falling, improve the seismic seeurity of floor.
The solution of second technical problem of the present invention is achieved in that a kind of construction method of superimposed precast plate, and the mosaic of precast plate is provided with the precast plate connected node described in above-mentioned any one, and it comprises the following steps
(1) precast plate is laid;
(2) in the mosaic of precast plate, cage of reinforcement is laid;
(3) in the mosaic of precast plate, concreting;
(4) namely maintenance obtains superimposed precast plate.
So, pass through above-mentioned steps, one can be obtained be put together by precast plate, there is the prefabricated match board of good two-way stiffness, and, construction technology is simple, its underpart does not need to adopt the high energy consumption such as bamboo wooden form or steel form, high cost mould material, reduce cost, and, the two-way floor of prefabricated split adopting said method to obtain is provided with cage of reinforcement and cast-in-situ concrete connection because of it in precast plate mosaic, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.
Fig. 1 is for representing the drawing of the precast plate connected node involved by a kind of embodiment of this patent;
Fig. 2-Fig. 8 is for representing the drawing of the precast plate connected node involved by the another several embodiment of this patent;
Fig. 9 is for representing the structural representation of connector in the precast plate connected node involved by a kind of embodiment of this patent.
In figure:
1 stencil body 2 flanging 3 bleeding aperture 4 reinforcing bar fixture
21 elongated reinforcing bar 22 connecting reinforcements
110 first precast plate 120 second precast plates
Detailed description of the invention
Describe the present invention below in conjunction with accompanying drawing, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.In addition, those skilled in the art, according to the description of presents, can carry out respective combination to the feature in embodiment in presents and in different embodiment.
The embodiment of the present invention is as follows, refer to shown in Fig. 1 to Fig. 9, a kind of precast plate connected node, the second precast plate 120 comprising the first precast plate 110 and be connected with the first precast plate 110, the junction of described first precast plate 110 and the second precast plate 120 is provided with connector, described connector comprises cage of reinforcement, and the plate face of described first precast plate 110, the plate face of the second precast plate 120 and connected node between the two form one by cast-in-situ concrete.So, precast plate mosaic adopts the connected node of said structure, reinforcement fabrication is become cage of reinforcement, because precast plate mosaic is that small size is cast-in-place, as adopted field fabrication then at substantial cost of labor, and adopt precast framework, then can at room machine batch making, be conducive to ensureing that skeleton conforms to design size, significantly can reduce cost of manufacture simultaneously, after building cast-in-situ concrete, iterative structure plate is defined after cast-in-situ concrete is combined with precast plate, by precast plate five equal build-ins of precast surface in cast-in-situ concrete, under the acting in conjunction of cage of reinforcement and cast-in-situ concrete, globality and the anti-seismic performance of prefabricated split floor can be increased substantially, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve globality and the security performance of building.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in figs. 5 and 9, described connector can also comprise exempts from hold mode, described hold mode of exempting from comprises stencil body 1, and at least one side of described stencil body 1 is provided with flanging 2, and described cage of reinforcement is fixed on exempts from hold mode.So, precast plate mosaic adopts the connected node of said structure, wherein have employed integrated connector, after the side of its stencil body 1 is provided with flanging 2, exempt from hold mode application process described, flanging 2 can close with precast plate close contact, the plate face formed after flanging 2 can contact with the surperficial forming surface of precast plate, effectively can prevent its spillage in casting process, if flanging 2 is converted into and stencil body 1 in the angle between 90 ° to 135 °, then can expand bonding tightness further, simultaneously, the plate face formed after its flanging 2 can be shelved on the split face of precast plate, under the effect of working load, hold mode will be exempted from and precast plate compresses mortar leakage prevention.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 9, described stencil body 1 can be steel plate, and described flanging 2 is elastic telescopic face.So, stencil body 1 is steel plate, and when described flanging 2 is elastic telescopic face, flanging 2 has extendable room, described in exempt from hold mode and be applied in precast plate split process, can make up and between precast plate, range error is set, can prevent the split of precast plate from connecting spillage.
On the basis of above-described embodiment, in another embodiment of the present invention, described stencil body 1 is bamboo slab rubber, wood glue plate or plastic plate.So, when stencil body 1 is above-mentioned material, have cost low, wide material sources, when particularly adopting plastic plate, it has good plasticity and decay resistance, is conducive to applying.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 9, the both sides of described stencil body all can be provided with elastic telescopic face, and described elastic telescopic face is that steel plate edge is compressed into fold and forms.So, the both sides of template are provided with elastic telescopic face, described elastic telescopic face is that steel plate edge is compressed into fold when forming, template processing technology is simple, flanging 2 has extendable room, described hold mode of exempting from is applied in precast plate split process, can make up and between precast plate, range error is set, can prevent the split of precast plate from connecting spillage, and after application, template bottom also has corresponding fold accordingly, and what increased substantially its underpart whitewashes coating bonding surface, can prevent rendering layer from coming off.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 9, described stencil body 1 can be provided with bleeding aperture 3.So, stencil body 1 is provided with bleeding aperture 3, described hold mode of exempting from is applied in the split process of precast plate, after Cast-in-place concrete pours into, a small amount of slurry can be secreted from bleeding aperture 3, thus the soffit at split position forms matsurface, what increased substantially its underpart whitewashes coating binding force, can prevent rendering layer from coming off.In addition, described bleeding aperture 3 can arrange multiple, and is evenly distributed on described stencil body 1.Preferably, on described flanging 2, also can be provided with bleeding aperture 3, thus can form matsurface in the soffit entirety at split position, what increased substantially its underpart whitewashes coating binding force, can prevent rendering layer from coming off.In addition, described bleeding aperture 3 can be circular hole, semicircle orifice, square hole, star-shaped aperture or polygonal hole, can form bleeding aperture 3 by punching press direct on stencil body 1.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 9, described stencil body 1 can be provided with reinforcing bar fixture 4.So; stencil body 1 is provided with reinforcing bar fixture 4; described hold mode of exempting from is in the split process being applied to precast plate; the reinforcing bar at split position can by reinforcing bar fixture 4 with exempt from hold mode and be connected; fully can ensure the cast-in-situ concrete protective layer thickness of reinforcing bar; meanwhile, also can by template firmly with bar connecting, prevent its template in the process of cast-in-situ concrete from falling because of the applying of working load.
On the basis of above-described embodiment, in another embodiment of the present invention, described reinforcing bar fixture 4 can adopt one-body molded with stencil body 1.So, when reinforcing bar fixture 4 and stencil body 1 are one-body molded, only need reinforcing bar fixture 4 to be made by punching press, considerably reduce manufacture difficulty and the cost of reinforcing bar fixture 4.
On the basis of above-described embodiment, in another embodiment of the present invention, described reinforcing bar fixture 4 can be working of plastics.So, when adopting working of plastics as reinforcing bar fixture 4, reinforcing bar permanent position is adjustable, and reinforcing bar fixture 4 reduces costs by batch making.
On the basis of above-described embodiment, in another embodiment of the present invention, described working of plastics one end can be the embedding mouth of reinforcing bar, is sold back to a grain-producing area till the other end.So, when working of plastics one end is the embedding mouth of reinforcing bar, be sold back to a grain-producing area till the other end, when described reinforcing bar fixture 4 is applied, reinforcing bar can be snapped in reinforcing bar embedding mouth internal fixtion reinforcing bar, non-return pin inserts non-return in the hole that template is offered and fixes, construction technology is simple, reduces difficulty of construction.
On the basis of above-described embodiment, in another embodiment of the present invention, described reinforcing bar fixture 4 can be reinforcing bar locating slot.So, stencil body 1 is provided with reinforcing bar locating slot, described hold mode of exempting from is in the split process being applied to precast plate, the reinforcing bar at split position can by reinforcing bar locating slot with exempt from hold mode and be connected, reinforcing bar can be prevented to be shifted, convenient fixing to be installed, simultaneously, also can by template firmly with bar connecting, prevent its template in the process of cast-in-situ concrete from falling because of the applying of working load.
On the basis of above-described embodiment, in another embodiment of the present invention, described stencil body 1 can also be provided with fin.So; after stencil body 1 is provided with fin; the rigidity of template itself is greatly improved; the thickness of template can be reduced, meanwhile, can also template deformation be prevented; in addition; if fin horizontally set, can also use as steel bar spacer, can fully ensure concrete cover to reinforcement thickness.
On the basis of above-described embodiment, in another embodiment of the present invention, described fin and stencil body 1 one-body molded, or described fin and the body formed and described fin of stencil body 1 point are fixed on stencil body 1.So, when fin and stencil body 1 one-body molded time, as adopt steel plate make template, then can be compressing by steel plate, manufacture craft is convenient and simple,
On the basis of above-described embodiment, in another embodiment of the present invention, described fin can also be provided with reinforcing bar locating slot.So, after fin is provided with reinforcing bar locating slot, in application process, reinforcing bar is placed in reinforcing bar locating slot, reinforcing bar can be prevented to be shifted, if arrange restraint device at reinforcing bar detent notch, then reinforcing bar firmly can be fixed in reinforcing bar detent, prevent reinforcing bar from moving further, effectively can ensure that the interior mechanics performance of cast-in-place structural is coincide with design.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figures 1 to 9, described cage of reinforcement can comprise longitudinal reinforcement and transverse reinforcement, described longitudinal reinforcement is elongated reinforcing bar 21, transverse reinforcement is connecting reinforcement 22, and described elongated reinforcing bar 21 and connecting reinforcement 22 are arranged in length and breadth and fixedly become cage of reinforcement, and described connecting reinforcement 22 is provided with the turnover of at least two places.So, reinforcement fabrication is become cage of reinforcement, because precast plate mosaic is that small size is cast-in-place, as adopted field fabrication then at substantial cost of labor, and adopt precast framework, then can at room machine batch making, be conducive to ensureing that skeleton conforms to design size, significantly can reduce cost of manufacture simultaneously, and on connecting reinforcement 22, be provided with the turnover of at least two places, after building cast-in-situ concrete, by elongated reinforcing bar 21 and connecting reinforcement 22, contiguous prefabricated plate is connected to form integral rigidity plate, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.Preferably, described connecting reinforcement 22 can be many, and is uniformly distributed, and arranges in length and breadth with elongated reinforcing bar 21 and fixedly becomes cage of reinforcement.
On the basis of above-described embodiment, in another embodiment of the present invention, described elongated reinforcing bar 21 can by being welded to connect into cage of reinforcement with connecting reinforcement 22.So, when elongated reinforcing bar 21 with connecting reinforcement 22 by being welded to connect into cage of reinforcement time, the production efficiency of cage of reinforcement is high, automatic production line can be realized produce, significantly can reduce cost of labor, and secure and reliable connection, be conducive to large-scale promotion application.
On the basis of above-described embodiment, in another embodiment of the present invention, described elongated reinforcing bar 21 and connecting reinforcement 22 also can connect into cage of reinforcement by colligation.So, when elongated reinforcing bar 21 and connecting reinforcement 22 connect into cage of reinforcement by colligation, in application process, local reinforcement location can be adjusted flexibly, so that arrange other pipelines or lose pre-buried, facilitate construction operation.
On the basis of above-described embodiment, in another embodiment of the present invention, described connecting reinforcement 22 end can be provided with linkage.So, connecting reinforcement 22 end is provided with linkage, when described cage of reinforcement is applied to precast plate mosaic, the linkage of connecting reinforcement 22 end can be connected to each other with the reserved reinforcing bar exposed in precast plate, afterwards after concreting, contiguous prefabricated plate is connected to form integral rigidity plate by the cage of reinforcement of junction and cast-in-situ concrete, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
On the basis of above-described embodiment, in another embodiment of the present invention, described linkage can for being arranged at the screw thread of connecting reinforcement 22 end.So, when linkage is the screw thread being arranged at connecting reinforcement 22 end, during described cage of reinforcement application, can be inserted in hole reserved on precast plate by arranging threaded end, after concreting, can connecting reinforcement 22 be anchored in precast plate, and then, contiguous prefabricated plate is connected to form integral rigidity plate by the cage of reinforcement of junction and cast-in-situ concrete, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
On the basis of above-described embodiment, in another embodiment of the present invention, described connecting reinforcement 22 is or/and the end of elongated reinforcing bar 21 also can be provided with pier nose.So, when connecting reinforcement 22 or/and the end of elongated reinforcing bar 21 is provided with pier nose, during described cage of reinforcement application, the end being provided with pier nose can be inserted in hole reserved on precast plate, or by pier nose by lockset by the bar connecting exposed pre-buried on precast plate, after concreting, can by elongated reinforcing bar 21 or/and connecting reinforcement 22 be anchored in precast plate, and then, contiguous prefabricated plate is connected to form integral rigidity plate by the cage of reinforcement of junction and cast-in-situ concrete, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
On the basis of above-described embodiment, in another embodiment of the present invention, described connecting reinforcement 22 two ends can also arrange bending section.So, connecting reinforcement 22 two ends arrange bending section, and when described cage of reinforcement is applied to the split position of precast plate, after building cast-in-situ concrete, bending end can form good anchoring.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, described connecting reinforcement 22 can form for intersecting after bending.So, connecting reinforcement 22 forms for intersecting after the place's bending of middle part two, and described cage of reinforcement is applied to precast plate mosaic, after concreting, increase on the one hand itself and concrete contact area and with concrete adhesion, reach the effect of bonding strength enhancing; On the other hand, adopt interconnection muscle, effectively can regulate the bending angle of dowel, the minimizing of turning angle effectively can ensure that dowel has enough anchorage lengths, and test shows, the turning angle of staggered form dowel is less, and the overall performance of plate is stronger.
On the basis of above-described embodiment, in another embodiment of the present invention, the bending angle scope of described connecting reinforcement 22 can be 20 °-60 °.So, connecting reinforcement 22 forms for intersecting after bending, and described cage of reinforcement is applied to precast plate mosaic, after concreting, increase on the one hand itself and concrete contact area and with concrete adhesion, reach the effect of bonding strength enhancing; On the other hand, adopt interconnection muscle, effectively can regulate the bending angle of dowel, the minimizing of turning angle effectively can ensure that dowel has enough anchorage lengths, and test shows, the turning angle of staggered form dowel is less, and the overall performance of plate is stronger.
On the basis of above-described embodiment, in another embodiment of the present invention, described connecting reinforcement 22 is or/and elongated reinforcing bar 21 can be made for indented bars.So, adopt indented bars to make skeleton, indented bars has good anchoring property, can improve the antidetonation of precast plate mosaic cast-in-place concrete structure, fracture resistance.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Fig. 1, Fig. 4, Fig. 5 and Fig. 8, described first precast plate 110 and/or the second precast plate 120 can be hollow pre-fabricated panels or prestressing force precast plate.So, adopt hollow pre-fabricated panels can reduce the weight of floor, save material, meanwhile, the sound isolating and heat insulating performance of floor can be increased substantially, and adopt prestressing force precast plate, then can improve non-deformability and the weight bearing power of floor.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Fig. 3, Fig. 4, Fig. 6 and Fig. 7, the link of described first precast plate 110 and/or the second precast plate 120 can be provided with step platform, elongated reinforcing bar 21 is had to be arranged on step platform in cage of reinforcement, connecting reinforcement 22 part stretches in step platform, and cast-in-situ concrete is built and formed the superimposed connecting overall of T-shaped between precast plate.So, by cast-in-place T-shaped structure, precast plate is connected into overall structure, and the reinforcing bar in precast plate is or/and steel strand are longitudinally arranged, and can jointly form overall force structure by the cast-in-situ concrete of choosing outside step platform lower in part.In addition, preferably, the surface of the step platform of the first precast plate 110 and/or the second precast plate 120 is matsurface, and particularly the upper surface of step platform can also arrange anchor slot, strengthen the anchoring strength of new-old concrete on direction, plate face, strengthen the globality of floor further.
On the basis of above-described embodiment, in another embodiment of the present invention, the vertical cross-section shape in described step platform can be vertical plane or inclined-plane, and choosing portion end surface outside described step platform lower is inclined-plane, has reinforcing bar or/and steel strand are longitudinally arranged in precast plate.So, vertical cross-section shape in described step platform can be vertical plane or inclined-plane, and choosing portion end surface outside step platform lower is inclined-plane, cast-in-situ concrete can be allowed completely to water closely knit, not easily form honeycomb hollowing, be conducive to the pouring quality improving cast-in-place T-shaped structure.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 4 and Figure 8, choose on portion end surface outside described step platform lower and can be provided with the groove parallel with plate body.So, choose outside step platform lower on portion end surface and be provided with the groove parallel with plate body, after building cast-in-situ concrete, cast-in-situ concrete forms embedded structure in a groove, in earthquake disaster process, even if precast plate destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate ruptured from falling, improve the seismic seeurity of floor.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 1 and Figure 5, the link of described first precast plate 110 and/or the second precast plate 120 can be provided with V-type notch or double V-groove.So, the link of the first precast plate 110 and/or the second precast plate 120 is provided with V-type notch or double V-groove, after building cast-in-situ concrete, cast-in-situ concrete forms embedded structure in V-type notch or double V-groove, in earthquake disaster process, even if precast plate destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate ruptured from falling, improve the seismic seeurity of floor.
On the basis of above-described embodiment, in another embodiment of the present invention, the link of the first precast plate 110 and/or the second precast plate 120 can set up sunk key, the direct bonding surface of new-old concrete can be increased like this, increase laterally and the vertical shearing propagated.In addition, the transverse structure reinforcing bar in superimposed for single load bearing in prior art precast plate can be changed into steel bar stress and stretch out prefabricated edges of boards, precast plate side piece and last layer concrete can be utilized like this to realize pass force crossly, thus increase full precast floor slab lateral stiffness.Intersect after connecting reinforcement 22 adopts bending described in precast plate connected node place and form, increase on the one hand its with concrete contact area and with concrete adhesion, reach the effect of bonding strength enhancing; On the other hand, adopt interconnection muscle, effectively can regulate the bending angle of dowel, the minimizing of turning angle effectively can ensure that dowel has enough anchorage lengths.After connecting reinforcement is stressed, produce oblique compression power to periphery concrete, its horizontal component makes concrete axial tension, cuts, and radial component makes concrete produce the tapered stress of hoop, makes stress laterally have effect spread.The minimizing of turning angle, the horizontal component of reinforcing bar increases, and under the requirement meeting vertical shear, enables from the transition reposefully of stress in biside plate.
On the basis of above-described embodiment, in another embodiment of the present invention, improve a kind of construction method of superimposed precast plate, be provided with the precast plate connected node described in above-mentioned any one in the mosaic of precast plate, it comprises the following steps
(1) precast plate is laid;
(2) in the mosaic of precast plate, cage of reinforcement is laid;
(3) in the mosaic of precast plate, concreting;
(4) namely maintenance obtains superimposed precast plate.
So, pass through above-mentioned steps, one can be obtained be put together by precast plate, there is the prefabricated match board of good two-way stiffness, and, construction technology is simple, its underpart does not need to adopt the high energy consumption such as bamboo wooden form or steel form, high cost mould material, reduce cost, and, the two-way floor of prefabricated split adopting said method to obtain is provided with cage of reinforcement and cast-in-situ concrete connection because of it in precast plate mosaic, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a precast plate connected node, the second precast plate comprising the first precast plate and be connected with the first precast plate, it is characterized in that, the junction of described first precast plate and the second precast plate is provided with connector, described connector comprises cage of reinforcement, and the plate face of described first precast plate, the plate face of the second precast plate and connected node between the two form one by cast-in-situ concrete.
2. precast plate connected node according to claim 1, is characterized in that, described connector also comprises exempts from hold mode, described in exempt from hold mode and comprise stencil body, at least one side of described stencil body is provided with flanging, and described cage of reinforcement is fixed on exempts from hold mode.
3. precast plate connected node according to claim 2, is characterized in that, described stencil body is steel plate, and described flanging is elastic telescopic face, or described stencil body is bamboo slab rubber, wood glue plate or plastic plate.
4. precast plate connected node according to claim 2, is characterized in that, the both sides of described stencil body are provided with elastic telescopic face, and described elastic telescopic face is that steel plate edge is compressed into fold and forms.
5. precast plate connected node according to claim 4, is characterized in that, described stencil body is provided with bleeding aperture.
6. the precast plate connected node according to any one of claim 2 to 5, is characterized in that, described stencil body is provided with reinforcing bar fixture.
7. precast plate connected node according to claim 6, is characterized in that, described reinforcing bar fixture and stencil body one-body molded; Or described reinforcing bar fixture is working of plastics; Or described working of plastics one end is the embedding mouth of reinforcing bar, is sold back to a grain-producing area till the other end; Or described reinforcing bar fixture is reinforcing bar locating slot.
8. the precast plate connected node according to any one of claim 2 to 5, is characterized in that, described stencil body is provided with fin; Or described fin and stencil body one-body molded, or described fin and stencil body divide body formed and described fin to be fixed on stencil body; Or institute's fin is provided with reinforcing bar locating slot.
9. precast plate connected node according to any one of claim 1 to 5, it is characterized in that, described cage of reinforcement comprises longitudinal reinforcement and transverse reinforcement, described longitudinal reinforcement is elongated reinforcing bar, transverse reinforcement is connecting reinforcement, described elongated reinforcing bar and connecting reinforcement are arranged in length and breadth and fixedly become cage of reinforcement, and described connecting reinforcement is provided with the turnover of at least two places; Or described elongated reinforcing bar with connecting reinforcement by being welded to connect into cage of reinforcement; Or described elongated reinforcing bar and connecting reinforcement connect into cage of reinforcement by colligation; Or described connecting reinforcement end is provided with linkage; Or described linkage is the screw thread being arranged at connecting reinforcement end; Or described connecting reinforcement is or/and the end of elongated reinforcing bar is provided with pier nose; Or described connecting reinforcement two ends arrange bending section; Or
Described connecting reinforcement is intersect after bending to form; Or the bending angle scope of described connecting reinforcement is 20 °-60 °; Or described connecting reinforcement is or/and elongated reinforcing bar is indented bars is made; Or described first precast plate and/or the second precast plate are hollow pre-fabricated panels or prestressing force precast plate; Or the link of described first precast plate and/or the second precast plate is provided with step platform, elongated steel-bar arrangement is had on step platform in cage of reinforcement, connecting reinforcement part stretches in step platform, and cast-in-situ concrete is built and formed the superimposed connecting overall of T-shaped between precast plate; Or the vertical cross-section shape in step platform is vertical plane or inclined-plane, choosing portion end surface outside described step platform lower is inclined-plane, has reinforcing bar or/and steel strand are longitudinally arranged in precast plate; Or choose on portion end surface outside described step platform lower and be provided with the groove parallel with plate body; Or the link of described first precast plate and/or the second precast plate is provided with V-type notch or double V-groove.
10. a construction method for superimposed precast plate, is provided with the precast plate connected node according to any one of claim 1 to 9, it is characterized in that, comprise the following steps in the mosaic of precast plate:
(1) precast plate is laid;
(2) in the mosaic of precast plate, cage of reinforcement is laid;
(3) in the mosaic of precast plate, concreting;
(4) namely maintenance obtains superimposed precast plate.
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| CN201510593349.5A CN105155689A (en) | 2015-09-17 | 2015-09-17 | Connection node of precast slabs and construction method for laminated precast slabs |
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| CN201510593349.5A CN105155689A (en) | 2015-09-17 | 2015-09-17 | Connection node of precast slabs and construction method for laminated precast slabs |
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Application publication date: 20151216 |