CN210508018U - Concrete prefabricated floor slab - Google Patents
Concrete prefabricated floor slab Download PDFInfo
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- CN210508018U CN210508018U CN201920983418.7U CN201920983418U CN210508018U CN 210508018 U CN210508018 U CN 210508018U CN 201920983418 U CN201920983418 U CN 201920983418U CN 210508018 U CN210508018 U CN 210508018U
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Abstract
The utility model relates to a precast concrete floor slab, which comprises a concrete slab, wherein a plurality of truss girders are longitudinally arranged on the concrete slab, and the upper ends of the truss girders extend out of the upper end surface of the concrete slab; a plurality of transverse ribs penetrate through the plurality of truss girders, two ends of each transverse rib extend out of the side face of the concrete slab, and the transverse ribs and the truss girders are bound and fixed through steel wires; and a plurality of longitudinal ribs are arranged between the plurality of truss girders, the longitudinal ribs are lapped above the transverse ribs, two ends of the longitudinal ribs extend out of the side surface of the concrete slab, and the longitudinal ribs and the transverse ribs are bound and fixed through steel wires. The ribs on the truss girder can provide restraint force for the transverse ribs in a certain direction, and the steel wire-based binding force has better containment effect for the binding force provided by the steel wires between the ribs, so that the concrete poured on the steel wire-based binding force is not easy to be led out and cracked. While the truss beam has a higher strength than the individual reinforcing bars.
Description
Technical Field
The utility model relates to a concrete slab's the manufacturing field, concretely relates to precast concrete floor.
Background
The reinforced concrete is a combined material formed by adding reinforcing mesh, steel plate or fiber into concrete to improve the mechanical property of concrete. Most buildings use reinforced concrete as the main framing building material. During the construction of a building, concrete slabs are generally cast in situ. In order to further improve the construction progress, a concrete composite floor slab appears, a form of combining prefabrication and cast-in-place concrete is adopted, and the floor slab in the form has the same good integrity as a cast-in-place floor slab and has the advantages of high rigidity, good crack resistance and the like. Compared with a cast-in-place floor slab, the construction progress is improved, the construction period is shortened, and the templates are saved. The prefabricated floor slab is generally prefabricated in a factory, so that the labor productivity is improved, the component quality is ensured, and the cost is saved. At present, the precast concrete floor slab is tied up into a fixed shape by using reinforcing steel bars, the tied reinforcing steel bars are placed in a template, and concrete is poured to form the precast slab. Because the steel bars are directly bound and fixed through the steel wires, the traction ratio between the steel bars is poor, and the concrete poured on the steel bars is easy to be led out and cracked. For some applications with higher strength requirements, prefabricated panels with higher strength are required.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a precast concrete floor can provide certain restrictive force between the reinforcing bar, makes the difficult condition of being qualified for the next round of competitions the fracture of the concrete of pouring on it, can improve whole precast concrete floor's mechanical properties simultaneously.
The utility model discloses a following technical scheme realizes:
a precast concrete floor slab comprises a concrete slab, wherein a plurality of truss girders are longitudinally arranged on the concrete slab, and the upper ends of the truss girders extend out of the upper end face of the concrete slab; a plurality of transverse ribs penetrate through the plurality of truss girders, two ends of each transverse rib extend out of the side face of the concrete slab, and the transverse ribs and the truss girders are bound and fixed through steel wires; and a plurality of longitudinal ribs are arranged between the plurality of truss girders, the longitudinal ribs are lapped above the transverse ribs, two ends of the longitudinal ribs extend out of the side surface of the concrete slab, and the longitudinal ribs and the transverse ribs are bound and fixed through steel wires.
The utility model has the further improvement that the truss girder comprises a longitudinal straight rib B and a longitudinal straight rib C which are positioned in the concrete slab, and the longitudinal straight rib A is positioned above the upper end surface of the concrete slab; the longitudinal straight ribs A, the longitudinal straight ribs B and the longitudinal straight ribs C are arranged in parallel at equal intervals, and the longitudinal straight ribs A are positioned between the longitudinal straight ribs B and the longitudinal straight ribs C; the longitudinal straight ribs A and the longitudinal straight ribs B are fixedly connected with one another through web ribs A, and the longitudinal straight ribs A and the longitudinal straight ribs C are fixedly connected with one another through web ribs B.
The utility model discloses a further improvement is, web muscle A and web muscle B's shape is the triangle wave form, web muscle A and web muscle B's crest position fixed connection in vertically straightening muscle A's both sides, web muscle A's trough position fixed connection in vertically straightening muscle B, web muscle B's trough position fixed connection in vertically straightening muscle C.
The utility model discloses a further improvement scheme is, web muscle A and web muscle B symmetry are fixed in vertical straight muscle A's both sides.
The utility model discloses a further improvement scheme is, horizontal rib stretches out the both ends of concrete slab side are upwards bent and are the crotch.
The utility model discloses a further improvement scheme is, concrete slab's up end carries out the napping and handles.
Compared with the prior art, the utility model, following obvious advantage has:
firstly, a plurality of longitudinal truss girders are arranged in a concrete slab, and transverse ribs are bound on the truss girders through steel wire ropes. The truss girder has a certain space structure, and the transverse ribs penetrate through the truss girder for binding. The ribs on the truss girder can provide restraint force for the transverse ribs in a certain direction, and the steel wire-based binding force has better containment effect for the binding force provided by the steel wires between the ribs, so that the concrete poured on the steel wire-based binding force is not easy to be led out and cracked. Meanwhile, the truss girder has higher strength compared with a single reinforcing bar, so that the strength of the precast concrete plate can be improved on the whole.
And secondly, arranging longitudinal straight ribs A, longitudinal straight ribs B and longitudinal straight ribs C in the truss girder in parallel at equal intervals, wherein the longitudinal straight ribs A are positioned between the longitudinal straight ribs B and the longitudinal straight ribs C. The cross sections of the longitudinal straight rib A, the longitudinal straight rib B and the longitudinal straight rib C form an equilateral triangle structure, and the longitudinal straight rib A, the longitudinal straight rib B and the longitudinal straight rib C are connected through the web rib A and the web rib B, so that a better stable structure is realized.
Thirdly, the web rib A and the web rib B are both in the shape of a triangular wave, the wave crest positions of the web rib A and the web rib B are fixedly connected to the two sides of the longitudinal straight rib A, and the wave trough positions are fixedly connected with the longitudinal straight rib B and the longitudinal straight rib C respectively. The connection form enables two side surfaces of the truss girder to be divided into a plurality of triangular structures, and stability of truss connection is further improved.
And fourthly, the web rib A and the web rib B are symmetrically fixed on two sides of the longitudinal straight rib A, and two side surfaces of the truss girder have the same mechanical property.
And fifthly, the two ends of the transverse ribs extending out of the side face of the concrete slab are bent upwards to form hooks, the prefabricated floor slab needs to be spliced and poured during site construction, and the splicing positions are bent to form the hooks so that the splicing and pouring positions have better tensile effect.
And sixthly, roughening the upper end surface of the concrete slab, wherein the upper end surface of the precast floor slab needs to be cast with a laminated layer on site in the field construction process, and the upper end surface of the concrete slab is roughened, so that the laminated layer can be better adhered to the concrete layer of the precast floor slab.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a perspective view of the truss girder, the longitudinal ribs and the transverse ribs being bound.
FIG. 3 is a schematic perspective view of a truss beam;
fig. 4 is a perspective view of a transverse rib.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1 to 4, the present invention includes a concrete slab 1, and the upper end surface of the concrete slab 1 is subjected to a roughening treatment. A plurality of truss girders 2 are arranged in the longitudinal direction of the concrete slab 1, and in the embodiment, the number of the truss girders 2 is three according to the size and the strength requirement of the precast floor slab. The truss girder 2 comprises a longitudinal straight rib B22 and a longitudinal straight rib C23 which are positioned in the concrete plate 1, and a longitudinal straight rib A21 is positioned above the upper end surface of the concrete plate 1. The longitudinal straight rib A21, the longitudinal straight rib B22 and the longitudinal straight rib C23 are arranged in parallel at equal intervals, and the longitudinal straight rib A21 is positioned between the longitudinal straight rib B22 and the longitudinal straight rib C23. The sections of the longitudinal straight rib A21, the general straight rib B22 and the longitudinal straight rib C23 are equilateral triangles. And a web rib A24 is fixedly connected between the longitudinal straight rib A21 and the longitudinal straight rib B22 in a welding manner, and a web rib B25 is fixedly connected between the longitudinal straight rib A21 and the longitudinal straight rib C23 in a welding manner.
The shapes of the abdominal muscle A24 and the abdominal muscle B25 are triangular wave shapes, and the lengths of the abdominal muscle A24 and the abdominal muscle B25 are equal to the lengths of the longitudinal straight muscle A21, the longitudinal straight muscle B22 and the longitudinal straight muscle C23. The wave crest positions of the web rib A24 and the web rib B25 are fixedly connected to the two sides of the vertical straight rib A21 in a welding mode, the wave trough position of the web rib A24 is fixedly connected to the vertical straight rib B22 in a welding mode, and the wave trough position of the web rib B25 is fixedly connected to the vertical straight rib C23 in a welding mode. The web rib A24 and the web rib B25 are symmetrically welded and fixed on two sides of the longitudinal straight rib A21.
A plurality of transverse ribs 3 penetrate through the plurality of truss girders 2, two ends of each transverse rib extend out of the side surface of the concrete slab 1, and two ends of each transverse rib 3 extending out of the side surface of the concrete slab 1 are bent upwards to form a hook 31. The transverse ribs 3 in this embodiment pass through the triangular waves of the web rib a24 and the web rib B25 and are bound to the longitudinal straight rib B22 and the longitudinal straight rib C23 by steel wires. A plurality of longitudinal ribs 4 are provided between the truss girders 2, in this example, two longitudinal ribs 4 are provided between the truss girders 2. The longitudinal ribs 4 are lapped above the transverse ribs 3, two ends of each longitudinal rib extend out of the side face of the concrete slab 1, and the longitudinal ribs 4 and the transverse ribs 3 are bound and fixed through steel wires.
Claims (6)
1. A precast concrete floor slab is characterized in that: the concrete slab comprises a concrete slab (1), wherein a plurality of truss girders (2) are longitudinally arranged on the concrete slab (1), and the upper ends of the truss girders (2) extend out of the upper end face of the concrete slab (1); a plurality of transverse ribs (3) penetrate through the plurality of truss girders (2), two ends of each transverse rib extend out of the side face of the concrete slab (1), and the transverse ribs (3) are bound and fixed with the truss girders (2) through steel wires; be provided with many vertical ribs (4) between many truss girder (2), vertical rib (4) overlap joint in the top of horizontal rib (3) to both ends are stretched out the side of concrete slab (1), vertical rib (4) with horizontal rib (3) are fixed through the steel wire ligature.
2. A precast concrete floor slab according to claim 1, wherein: the truss girder (2) comprises a longitudinal straight rib B (22) and a longitudinal straight rib C (23) which are positioned in the concrete slab (1), and the longitudinal straight rib A (21) is positioned above the upper end surface of the concrete slab (1); the longitudinal straight ribs A (21), the longitudinal straight ribs B (22) and the longitudinal straight ribs C (23) are arranged in parallel at equal intervals, and the longitudinal straight ribs A (21) are positioned between the longitudinal straight ribs B (22) and the longitudinal straight ribs C (23); the vertical straight rib A (21) with fixedly connected with web rib A (24) between the vertical straight rib B (22), vertical straight rib A (21) with fixedly connected with web rib B (25) between the vertical straight rib C (23).
3. A precast concrete floor slab according to claim 2, wherein: the shape of web muscle A (24) and web muscle B (25) is triangle wave form, the crest position fixed connection of web muscle A (24) and web muscle B (25) in vertical both sides of straightening muscle A (21), the trough position fixed connection of web muscle A (24) in vertical straightening muscle B (22), the trough position fixed connection of web muscle B (25) in vertical straightening muscle C (23).
4. A precast concrete floor slab according to claim 3, wherein: the web rib A (24) and the web rib B (25) are symmetrically fixed on two sides of the longitudinal straight rib A (21).
5. A precast concrete floor slab according to claim 1, wherein: and two ends of the transverse ribs (3) extending out of the side surface of the concrete slab (1) are bent upwards to form hooks (31).
6. A precast concrete floor slab according to claim 1, wherein: and the upper end surface of the concrete slab (1) is subjected to napping treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920983418.7U CN210508018U (en) | 2019-06-27 | 2019-06-27 | Concrete prefabricated floor slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920983418.7U CN210508018U (en) | 2019-06-27 | 2019-06-27 | Concrete prefabricated floor slab |
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| Publication Number | Publication Date |
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| CN210508018U true CN210508018U (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920983418.7U Active CN210508018U (en) | 2019-06-27 | 2019-06-27 | Concrete prefabricated floor slab |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031239A (en) * | 2020-09-03 | 2020-12-04 | 四川省佳宇建设集团有限公司 | Precast concrete composite floor slab and manufacturing method thereof |
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2019
- 2019-06-27 CN CN201920983418.7U patent/CN210508018U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031239A (en) * | 2020-09-03 | 2020-12-04 | 四川省佳宇建设集团有限公司 | Precast concrete composite floor slab and manufacturing method thereof |
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