CN216195863U - Hollow close-splicing and overlapping bidirectional plate of prestressed concrete steel bar truss - Google Patents
Hollow close-splicing and overlapping bidirectional plate of prestressed concrete steel bar truss Download PDFInfo
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- CN216195863U CN216195863U CN202122370070.4U CN202122370070U CN216195863U CN 216195863 U CN216195863 U CN 216195863U CN 202122370070 U CN202122370070 U CN 202122370070U CN 216195863 U CN216195863 U CN 216195863U
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Abstract
The utility model relates to a prestressed concrete steel bar truss hollow close-splicing superposed bidirectional plate, belonging to the technical field of civil engineering. This hollow close piece amalgamation bidirectional plate of prestressed concrete steel bar truss, including two piece at least parallel arrangement's prestressed truss prefabricated plate, close piece joint structure and coincide layer, prestressed truss prefabricated plate includes prestressed concrete bottom plate and steel bar truss, steel bar truss sets up along the long limit direction of prestressed concrete bottom plate, prestressed concrete bottom plate's face is provided with the cavity piece along its long limit direction uniform interval, close piece joint structure sets up in two adjacent prestressed truss prefabricated plate piece joints department, the face of pouring at prestressed truss prefabricated plate of coincide layer. The utility model adopts the prestressed truss precast slab, has large applicable span, saves the consumption of reinforcing steel bars and has good mechanical property; the plate end support structure with close splicing seams and no overhanging longitudinal ribs is adopted, so that the construction efficiency is high; the cavity blocks are adopted to form the cavity, so that the consumption of concrete is reduced, and the self weight of the composite slab is reduced.
Description
Technical Field
The utility model relates to a prestressed concrete steel bar truss hollow close-splicing superposed bidirectional plate, belonging to the technical field of civil engineering.
Background
In the fabricated concrete structure, the floor is mostly made of steel bar truss concrete composite slabs. When the floor area grid plate is designed and provided with the abutted seams according to the bidirectional plate, the post-cast strip type abutted seams of the same cast-in-place method are adopted in the prior engineering. The post-cast strip type splicing seam requires that the side of the prefabricated bottom plate board is provided with an overhanging steel bar, and a template needs to be supported under the post-cast strip, so that the components are inconvenient to manufacture and install, the production cost is increased, and the construction efficiency is reduced. In addition, for the plate end support, the plate end support structure with the outward extending longitudinal ribs is commonly used in engineering, and inconvenience is brought to production and construction of components.
The steel bar truss concrete composite slab is not applicable to floor systems with large span. On the one hand, because the increase of span, prefabricated bottom plate is easy to be cracked in production, transportation, work progress, and on the other hand, the increase of span leads to the increase of board thickness and arrangement of reinforcement, and the material quantity is great, is unfavorable for saving the cost.
In order to improve the applicable span of the steel bar truss concrete composite slab, the dead weight of the composite slab needs to be reduced, the mechanical property of the steel bar truss concrete composite slab needs to be improved, and in order to reduce the production cost and improve the construction efficiency, the splicing structure and the slab end support structure need to be improved. How to achieve the above-mentioned goals is a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that aiming at the defects of the prior art, the utility model provides the prestressed concrete steel bar truss hollow close-splicing and overlapping bidirectional plate which can effectively improve the construction efficiency, reduce the self weight of the structure and improve the mechanical property of a laminated slab.
The technical scheme provided by the utility model for solving the technical problems is as follows: the utility model provides a hollow close amalgamation of prestressed concrete steel bar truss folds two-way board, including two piece at least parallel arrangement's prestressed truss prefabricated plate, close splice joint structure and coincide layer, prestressed truss prefabricated plate includes prestressed concrete bottom plate and steel bar truss, prestressed concrete bottom plate is the cuboid form, steel bar truss arranges along the long limit direction of prestressed concrete bottom plate, steel bar truss's lower extreme is buried underground in prestressed concrete bottom plate, prestressed concrete bottom plate's face is provided with the cavity piece along its long limit direction even interval, close splice joint structure sets up between two adjacent prestressed truss prefabricated plates, the face of the truss prefabricated plate of pouring at the prestressing is built to the coincide layer.
The improvement of the technical scheme is as follows: each pre-stressed truss precast slab comprises at least four steel bar trusses, the cavity block is arranged between the steel bar trusses, and two long edges of each pre-stressed truss precast slab are spliced edges of the pre-stressed concrete bottom plate.
The improvement of the technical scheme is as follows: the prestressed concrete bottom plate splicing edge of the prestressed concrete bottom plate is provided with a plate side slope, and the plate side slope comprises an inclined surface and a chamfer which are sequentially connected from top to bottom.
The improvement of the technical scheme is as follows: the close splicing seam structure comprises splicing seam structure reinforcing steel bars and an embedding seam, wherein the splicing seam structure reinforcing steel bars are arranged on the plate surfaces of the splicing seams of the two adjacent prestressed truss precast slabs, and the embedding seam is arranged between the plate side slopes of the two adjacent prestressed truss precast slabs.
The improvement of the technical scheme is as follows: the piece structure reinforcing steel bar includes piece overlap joint reinforcing steel bar and transverse distribution reinforcing steel bar, and piece overlap joint reinforcing steel bar perpendicular to prestressed concrete bottom plate piece limit sets up, and piece overlap joint reinforcing steel bar sets up along the even interval of long limit direction of prestressed concrete bottom plate, and transverse distribution reinforcing steel bar perpendicular to piece overlap joint reinforcing steel bar sets up.
The improvement of the technical scheme is as follows: the splicing lap joint steel bars on one side of the splicing seam penetrate through the two steel bar trusses, and two transversely distributed steel bars are arranged on two sides of the splicing seam respectively.
The improvement of the technical scheme is as follows: the caulking joint comprises micro-expansion mortar and a covering layer, wherein the covering layer comprises gridding cloth and elastic putty.
The improvement of the technical scheme is as follows: still construct including setting up at its support node all around, support node constructs including indulging muscle overlap joint reinforcing bar, distribution reinforcing bar, mechanical joint and supporting beam, and mechanical joint buries underground in one side of supporting beam, indulges muscle overlap joint reinforcing bar setting in prestressed concrete bottom plate top and one end anchor in mechanical joint, and the setting of muscle overlap joint reinforcing bar is indulged to distribution reinforcing bar perpendicular to.
The utility model adopts the technical scheme that the method has the beneficial effects that:
(1) the prestressed concrete steel bar truss hollow close-splicing and overlapping two-way plate adopts a close-splicing seam structure and a plate end support structure without overhanging longitudinal ribs, wherein overhanging longitudinal ribs do not exist around a prestressed truss precast plate, a template does not need to be erected during construction, and components are more convenient to manufacture and install, so that the production cost is reduced, and the construction efficiency is improved;
(2) the hollow close-splicing and overlapping two-way plate of the prestressed concrete steel bar truss adopts a close-splicing seam structure to ensure effective transmission of internal force, so that the close-splicing and overlapping plate bears force in two directions and has good overall performance; the prestressed truss precast slab has large applicable span, less steel bar consumption and good mechanical property; the cavity block effectively reduces the consumption of concrete and the dead weight of the composite slab.
Drawings
The utility model will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a prestressed concrete steel bar truss hollow close-fitting laminated bidirectional plate according to an embodiment of the utility model;
FIG. 2 is a schematic structural diagram of a prestressed truss precast slab in a prestressed concrete steel bar truss hollow close-fitting laminated bidirectional slab according to an embodiment of the utility model;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 4 is an enlarged view of the bottom seam 8 of FIG. 3;
FIG. 5 is a cross-sectional view taken at B-B of FIG. 2;
fig. 6 is an enlarged view of the board-side ramp 6 of fig. 5;
FIG. 7 is a schematic structural diagram of a support joint structure in a prestressed concrete steel bar truss hollow close-fitting laminated bidirectional plate according to an embodiment of the present invention;
wherein: the concrete slab comprises, by weight, 1-a prestressed concrete bottom plate, 2-a steel bar truss, 3-a cavity block, 4-a top surface of a laminated layer, 5-a splicing edge of the prestressed concrete bottom plate, 6-a side slope, 61-a chamfer, 62-an inclined surface, 7-a laminated layer, 8-an embedded joint, 81-micro-expansion mortar, 82-a covering layer, 9-a splicing lap joint steel bar, 10-a transverse distribution steel bar, 11-a longitudinal bar lap joint steel bar, 12-a distribution steel bar, 13-a mechanical joint and 14-a support beam.
Detailed Description
Examples
The hollow close-splicing and overlapping bidirectional slab of the prestressed concrete steel truss of the embodiment is shown in fig. 1-7 and comprises at least two prestressed truss precast slabs which are arranged in parallel, a close-splicing seam structure and an overlapping layer 7, wherein each prestressed truss precast slab comprises a prestressed concrete bottom slab 1 and a steel bar truss 2, each prestressed concrete bottom slab 1 is in a cuboid shape, each steel bar truss 2 is arranged along the long edge direction of each prestressed concrete bottom slab 1, the lower end of each steel bar truss 2 is embedded in each prestressed concrete bottom slab 1, cavity blocks 3 are uniformly arranged on the slab surface of each prestressed concrete bottom slab 1 along the long edge direction of the slab surface at intervals, the close-splicing seam structure is arranged between every two adjacent prestressed precast slab trusses, the overlapping layer 7 is poured on the slab surface of each prestressed truss precast slab, and a top surface 4 of the overlapping layer is formed after pouring.
The steel bar trusses 2 of each pre-stressed truss precast slab of the pre-stressed concrete steel bar truss hollow close-splicing and overlapping bidirectional slab in the embodiment are four, the cavity block 3 is arranged between the two steel bar trusses 2 in the middle, and two long edges of each pre-stressed truss precast slab are respectively manufactured into pre-stressed concrete bottom plate splicing edges 5. The prestressed concrete bottom plate joint edge 5 of the prestressed concrete bottom plate 1 is provided with a plate side slope 6, and the plate side slope 6 comprises an inclined surface 62 and a chamfer 61 which are sequentially connected from top to bottom. The close splicing seam structure comprises splicing seam construction steel bars and a plate bottom seam 8, wherein the splicing seam construction steel bars are arranged on plate surfaces at splicing seams of the two adjacent prestressed truss precast plates, and the splicing seam 8 is arranged between plate side slopes 6 of the two adjacent prestressed truss precast plates. The piece structure reinforcing bar includes piece overlap joint reinforcing bar 9 and transverse distribution reinforcing bar 10, and piece overlap joint reinforcing bar 9 perpendicular to prestressed concrete bottom plate piece limit 5 sets up, and piece overlap joint reinforcing bar 9 sets up along the even interval of long limit direction of prestressed concrete bottom plate 1, and transverse distribution reinforcing bar 10 perpendicular to piece overlap joint reinforcing bar 9 sets up. The splicing lap steel bars 9 on one side of the splicing seam penetrate through the two steel bar trusses 2, and two transversely distributed steel bars 10 are arranged on two sides of the splicing seam respectively. The caulking joint 8 comprises micro-expansion mortar 81 and a covering layer 82, and the covering layer 82 comprises grid cloth and elastic putty.
The hollow close amalgamation of prestressed concrete steel bar truss of this embodiment closes two-way board, still including setting up at its support node structure all around, support node structure is including indulging muscle overlap joint reinforcing bar 11, distribution reinforcing bar 12, mechanical joint 13 and supporting beam 14, and mechanical joint 13 is buried underground in one side of supporting beam 14, indulges muscle overlap joint reinforcing bar 11 and sets up in 1 top of prestressed concrete bottom plate and one end anchor in mechanical joint 13, and distribution reinforcing bar 12 perpendicular to sets up with indulging muscle overlap joint reinforcing bar 11.
The hollow close-splicing and overlapping bidirectional plate of the prestressed concrete steel bar truss is suitable for medium-span (6-12m) building structures and various structural systems when being actually applied, can effectively improve the construction efficiency, reduces the self weight of the structure, and improves the mechanical property of a laminated slab. The embedding and filling 8 is embedded and sealed after the laminated layer 7 is poured, the embedding and filling 8 is composed of slopes 6 on two side plates of the abutted seam, micro-expansion mortar 81 is adopted for embedding and sealing, grid cloth is paved on the surface of the micro-expansion mortar 81, and elastic putty is added. The cavity block 3 is a hexahedron, and the plane projection of the cavity block is a square. The cavity block 3 adopts the existing steel net cage.
The present invention is not limited to the above-described embodiments. All technical solutions formed by equivalent substitutions fall within the protection scope of the claims of the present invention.
Claims (8)
1. The utility model provides a hollow close piece of close amalgamation of prestressed concrete steel bar truss folds two-way board which characterized in that: the prestressed concrete floor slab comprises at least two prestressed truss precast slabs, a close splicing seam structure and a laminated layer (7) which are arranged in parallel, wherein each prestressed truss precast slab comprises a prestressed concrete bottom plate (1) and a steel bar truss (2), each prestressed concrete bottom plate (1) is cuboid, each steel bar truss (2) is arranged along the long edge direction of each prestressed concrete bottom plate (1), the lower end of each steel bar truss (2) is embedded in each prestressed concrete bottom plate (1), cavity blocks (3) are uniformly arranged on the surface of each prestressed concrete bottom plate (1) along the long edge direction of each prestressed concrete bottom plate at intervals, the close splicing seam structures are arranged between every two adjacent prestressed truss precast slabs, and the laminated layer (7) is poured on the surface of each prestressed truss precast slab.
2. The prestressed concrete steel bar truss hollow close-fitting overlapped bidirectional plate as claimed in claim 1, wherein: each pre-stressed truss precast slab comprises at least four steel bar trusses (2), the cavity block (3) is arranged between the steel bar trusses (2), and two long edges of each pre-stressed truss precast slab are made into pre-stressed concrete bottom plate joint edges (5).
3. The prestressed concrete steel bar truss hollow close-fitting overlapped bidirectional plate as claimed in claim 1, wherein: the prestressed concrete bottom plate joint edge (5) of the prestressed concrete bottom plate (1) is provided with a plate side slope (6), and the plate side slope (6) comprises an inclined surface (62) and a chamfer (61) which are sequentially connected from top to bottom.
4. The prestressed concrete steel bar truss hollow close-fitting overlapped bidirectional plate as claimed in claim 1, wherein: the close splicing seam structure comprises splicing seam structure reinforcing steel bars and an embedding seam (8), wherein the splicing seam structure reinforcing steel bars are arranged on the plate surfaces of the splicing seams of the two adjacent prestress truss precast slabs, and the embedding seam (8) is arranged between the plate side slopes (6) of the two adjacent prestress truss precast slabs.
5. The prestressed concrete steel bar truss hollow close-fitting overlapped bidirectional plate as claimed in claim 4, wherein: piece structure reinforcing bar includes piece overlap joint reinforcing bar (9) and transverse distribution reinforcing bar (10), piece overlap joint reinforcing bar (9) perpendicular to prestressed concrete bottom plate piece limit (5) set up, piece overlap joint reinforcing bar (9) are followed the even interval in long limit direction of prestressed concrete bottom plate (1) sets up, transverse distribution reinforcing bar (10) perpendicular to piece overlap joint reinforcing bar (9) set up.
6. The prestressed concrete steel bar truss hollow close-fitting overlapped bidirectional plate as claimed in claim 5, wherein: the splicing lap joint steel bars (9) on one side of the splicing seam penetrate through the steel bar trusses (2), and two transverse distribution steel bars (10) are arranged on two sides of the splicing seam respectively.
7. The prestressed concrete steel bar truss hollow close-fitting overlapped bidirectional plate as claimed in claim 4, wherein: the embedding gap (8) comprises micro-expansion mortar (81) and a covering layer (82), wherein the covering layer (82) comprises grid cloth and elastic putty.
8. The prestressed concrete steel bar truss hollow close-fitting overlapped bidirectional plate as claimed in claim 1, wherein: still construct including setting up at its support node all around, support node constructs including indulging muscle overlap joint reinforcing bar (11), distribution reinforcing bar (12), mechanical joint (13) and supporting beam (14), mechanical joint (13) are buried underground one side of supporting beam (14), it is in to indulge muscle overlap joint reinforcing bar (11) setting prestressed concrete bottom plate (1) top and one end anchor in mechanical joint (13), distribution reinforcing bar (12) perpendicular to it sets up to indulge muscle overlap joint reinforcing bar (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122370070.4U CN216195863U (en) | 2021-09-28 | 2021-09-28 | Hollow close-splicing and overlapping bidirectional plate of prestressed concrete steel bar truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122370070.4U CN216195863U (en) | 2021-09-28 | 2021-09-28 | Hollow close-splicing and overlapping bidirectional plate of prestressed concrete steel bar truss |
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| Publication Number | Publication Date |
|---|---|
| CN216195863U true CN216195863U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122370070.4U Active CN216195863U (en) | 2021-09-28 | 2021-09-28 | Hollow close-splicing and overlapping bidirectional plate of prestressed concrete steel bar truss |
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| CN (1) | CN216195863U (en) |
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2021
- 2021-09-28 CN CN202122370070.4U patent/CN216195863U/en active Active
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