CN105275096A - Prefabricated pieced two-way slab construction method - Google Patents
Prefabricated pieced two-way slab construction method Download PDFInfo
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- CN105275096A CN105275096A CN201510593531.0A CN201510593531A CN105275096A CN 105275096 A CN105275096 A CN 105275096A CN 201510593531 A CN201510593531 A CN 201510593531A CN 105275096 A CN105275096 A CN 105275096A
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Abstract
The invention provides a prefabricated pieced two-way slab construction method. The method comprises the following steps: (1) prefabricated slabs are laid; (2) at the pieced places of the prefabricated slabs, soft rubber plates are supported and laid; (3) a reinforcing steel frame is laid on the soft rubber plates; (4) concrete is cast at the pieced places of the prefabricated slabs; (5) maintenance is carried out; (6) the supports are removed; and (7) the soft rubber plates are removed and the prefabricated pieced two-way slabs are obtained. Thus, through the above steps, a prefabricated pieced slab which is formed by piecing the prefabricated slabs and has good two-way stiffness can be obtained, the lower part does not need to adopt a high-energy consumption and high-cost template material such as a bamboo template or a steel template, the cost is reduced, and in addition, according to the prefabricated pieced two-way slab obtained by adopting the above method, as the reinforcing steel frame and cast-in-situ concrete connection are arranged at the pieced places of the prefabricated slabs, a situation in which the middle part is broken does not happen under effects of earthquake disasters, and the safety performance of the building is improved.
Description
Technical field
The present invention relates to assembled architecture field, particularly the two-way floor construction method of the prefabricated split of one.
Background technology
In assembled architecture, its floor and the component such as floor, wallboard are typically employed in prefabrication, then at the construction field (site) the connected node between prefabricated units are 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 globality of laminated floor slab is better, situ wet operation is more, and environment pollution is comparatively large, and needs a large amount of templates and support, and efficiency of construction is lower.At present, Ye You unit in charge of construction adopts full precast floor slab, general way is, cast-in-situ concrete between adjacent two precast plates, is linked to be entirety by concrete by precast plate, the floor of this structure, efficiency of construction is high, situ wet operation is considerably less, but globality is poor, and it is not firm to be connected between cast-in-situ concrete with precast plate.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of prefabricated split two-way floor construction method, it can not only reduce situ wet operation, can also improve the globality of building structure.
The solution of technical problem of the present invention is achieved in that the two-way floor construction method of a kind of prefabricated split, comprises the following steps:
(1) precast plate is laid;
(2) in the mosaic of precast plate, support and lay soft-slab;
(3) on soft-slab, cage of reinforcement is laid;
(4) in the mosaic of precast plate, concreting;
(5) maintenance;
(6) support is removed;
(7) remove soft-slab and namely obtain the two-way floor of prefabricated split.
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.
Another technical scheme of the present invention is on above-mentioned basis, and described soft-slab is PVC board, polyamide elastane plate, polyolefin elastic plate or elastic polyurethane plate.So, adopt PVC board, polyamide elastane plate, polyolefin elastic plate or elastic polyurethane plate as soft-slab, can repeatedly use, reduce mould material cost, particularly because it has elasticity, body is soft, very easy in form removal process, reduce difficulty of construction.
Another technical scheme of the present invention is on above-mentioned basis, and described soft-slab work plane is provided with at least one projection or/and at least one pit.So, soft-slab work plane is provided with at least one projection or/and at least one pit, after building cast-in-situ concrete, correspondingly can form pit or projection in cast-in-place concrete structure, be conducive to the reliability that its follow-up decoration whitewashes operation, can prevent causing because cast-in-place concrete structure surface is too smooth rendering layer to be peeled off and come off.
Another technical scheme of the present invention is on above-mentioned basis, and described soft-slab interior thickness is thicker than edge.So, when soft-slab interior thickness is thicker than edge, after the demoulding, correspondingly can form local inner concave in cast-in-place concrete structure, can prevent from, because working load and cast-in-situ concrete deadweight cause cast-in-place concrete structure external drum to the compression of soft-slab, fully ensure that the surface finish of floor slab bottoms.
Another technical scheme of the present invention is on above-mentioned basis, and there is longitudinal leakproof raised line at described soft-slab edge, and described longitudinal leakproof raised line and soft-slab form one.So, when there is longitudinal leakproof raised line at soft-slab edge, leakproof raised line can prevent cast-in-situ concrete slurry from casting process, causing cast-in-place concrete structure strength grade to reduce toward floor slab bottoms seepage, fully can ensure that the pouring quality of cast-in-place concrete structure meets designing requirement, leakproof raised line and soft-slab form the cost that one then reduce further template, improve globality and the anti-permeability performance of soft-slab.
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 precast plate is 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 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 described 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.
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 two-way floor of prefabricated split adopting the two-way floor construction method of prefabricated split involved by a kind of embodiment of this patent to build;
Fig. 2-Fig. 8 is for representing the drawing of the two-way floor of prefabricated split adopting the two-way floor construction method of prefabricated split involved by the another several embodiment of this patent to build.
In figure:
1 soft-slab 2 leakproof raised line 3 pit 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, and the two-way floor construction method of a kind of prefabricated split, comprises the following steps:
(1) precast plate is laid;
(2) in the mosaic of precast plate, support and lay soft-slab;
(3) on soft-slab, cage of reinforcement is laid;
(4) in the mosaic of precast plate, concreting;
(5) maintenance;
(6) support is removed;
(7) remove soft-slab and namely obtain the two-way floor of prefabricated split.
So, pass through above-mentioned steps, refer to shown in Fig. 1 to Fig. 8, 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.
On the basis of above-described embodiment, in another embodiment of the present invention, described soft-slab 1 can be PVC board, polyamide elastane plate, polyolefin elastic plate or elastic polyurethane plate.So, adopt PVC board, polyamide elastane plate, polyolefin elastic plate or elastic polyurethane plate as soft-slab 1, can repeatedly use, reduce mould material cost, particularly because it has elasticity, body is soft, very easy in form removal process, reduce difficulty of construction.
On the basis of above-described embodiment, in another embodiment of the present invention, described soft-slab 1 work plane can be provided with at least one projection or/and at least one pit 3.So, soft-slab 1 work plane is provided with at least one projection or/and at least one pit 3, after building cast-in-situ concrete, correspondingly can form pit 3 or projection in cast-in-place concrete structure, be conducive to the reliability that its follow-up decoration whitewashes operation, can prevent causing because cast-in-place concrete structure surface is too smooth rendering layer to be peeled off and come off.
On the basis of above-described embodiment, in another embodiment of the present invention, described soft-slab 1 interior thickness is thicker than edge.So, when soft-slab 1 interior thickness is thicker than edge, after the demoulding, correspondingly can form local inner concave in cast-in-place concrete structure, can prevent from, because working load and cast-in-situ concrete deadweight cause cast-in-place concrete structure external drum to the compression of soft-slab 1, fully ensure that the surface finish of floor slab bottoms.
On the basis of above-described embodiment, in another embodiment of the present invention, there is longitudinal leakproof raised line 2 at described soft-slab 1 edge, and described longitudinal leakproof raised line 2 forms one with soft-slab 1.So, when there is longitudinal leakproof raised line 2 at soft-slab 1 edge, leakproof raised line 2 can prevent cast-in-situ concrete slurry from casting process, causing cast-in-place concrete structure strength grade to reduce toward floor slab bottoms seepage, fully can ensure that the pouring quality of cast-in-place concrete structure meets designing requirement, leakproof raised line 2 and soft-slab 1 form the cost that one then reduce further template, improve globality and the anti-permeability performance of soft-slab 1.Preferably; described soft-slab 1 can also be provided with reinforcing bar fixture 4; so; soft-slab 1 is provided with reinforcing bar fixture 4; can be connected with cage of reinforcement by reinforcing bar fixture; fully can ensure the cast-in-situ concrete protective layer thickness of reinforcing bar, prevent its soft-slab 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, as shown in Figures 1 to 8, 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, described precast plate comprises the first precast plate 110 and/or the second precast plate 120, the link of described first precast plate 110 and/or the second precast plate 120 can be provided with step platform, have elongated reinforcing bar 21 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.
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. the two-way floor construction method of prefabricated split, is characterized in that, comprise the following steps:
(1) precast plate is laid;
(2) in the mosaic of precast plate, support and lay soft-slab;
(3) on soft-slab, cage of reinforcement is laid;
(4) in the mosaic of precast plate, concreting;
(5) maintenance;
(6) support is removed;
(7) remove soft-slab and namely obtain the two-way floor of prefabricated split.
2. the two-way floor construction method of prefabricated split according to claim 1, is characterized in that, described soft-slab is PVC board, polyamide elastane plate, polyolefin elastic plate or elastic polyurethane plate.
3. the two-way floor construction method of prefabricated split according to claim 2, is characterized in that, described soft-slab work plane is provided with at least one projection or/and at least one pit.
4. the two-way floor construction method of prefabricated split according to claim 1, is characterized in that, described soft-slab interior thickness is thicker than edge.
5. the two-way floor construction method of prefabricated split according to claim 1, is characterized in that, there is longitudinal leakproof raised line at described soft-slab edge, and described longitudinal leakproof raised line and soft-slab form one.
6. the two-way floor construction method of prefabricated split according to claim 1, 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.
7. the two-way floor construction method of prefabricated split according to claim 6, is characterized in that, described elongated reinforcing bar and connecting reinforcement are by being welded to connect into cage of reinforcement.
8. the two-way floor construction method of prefabricated split according to claim 6, is characterized in that, 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.
9. the two-way floor construction method of prefabricated split according to any one of claim 6 to 8, is characterized in that, described connecting reinforcement is or/and the end of elongated reinforcing bar is provided with pier nose; Or it is characterized in that, 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.
10. the two-way floor construction method of prefabricated split according to claim 1, it is characterized in that, the link of described 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 described 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.
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| CN201510593531.0A CN105275096A (en) | 2015-09-17 | 2015-09-17 | Prefabricated pieced two-way slab construction method |
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| CN201510593531.0A CN105275096A (en) | 2015-09-17 | 2015-09-17 | Prefabricated pieced two-way slab construction method |
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| CN201510593531.0A Pending CN105275096A (en) | 2015-09-17 | 2015-09-17 | Prefabricated pieced two-way slab construction method |
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| CN105672564A (en) * | 2016-03-30 | 2016-06-15 | 殷诗宝 | Prefabricated slab with side connection structure and connection method thereof |
| CN105756251A (en) * | 2016-03-02 | 2016-07-13 | 龙方启 | Multi-floor laminated plate |
| CN107035046A (en) * | 2017-05-04 | 2017-08-11 | 胡德 | A kind of floor quick structure for assembling and its assemble method |
| CN109057119A (en) * | 2018-06-26 | 2018-12-21 | 华东建筑设计研究院有限公司 | A kind of assembly concrete laminated floor slab connection structure |
| CN114856064A (en) * | 2022-06-11 | 2022-08-05 | 南京旭浦建材科技有限公司 | High-performance anti-seismic tensile laminated slab |
| CN117449467A (en) * | 2023-12-22 | 2024-01-26 | 西南石油大学 | Connecting structure for assembled floor slab and floor slab assembling method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114856064A (en) * | 2022-06-11 | 2022-08-05 | 南京旭浦建材科技有限公司 | High-performance anti-seismic tensile laminated slab |
| CN117449467A (en) * | 2023-12-22 | 2024-01-26 | 西南石油大学 | Connecting structure for assembled floor slab and floor slab assembling method |
| CN117449467B (en) * | 2023-12-22 | 2024-03-08 | 西南石油大学 | Connecting structure for assembled floor slab and floor slab assembling method |
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