CN211775041U

CN211775041U - Prefabricated superimposed sheet

Info

Publication number: CN211775041U
Application number: CN202020186939.2U
Authority: CN
Inventors: 吴宗秀
Original assignee: Shanghai Loucheng Concrete Co ltd
Current assignee: Shanghai Loucheng Concrete Co ltd
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2020-10-27
Anticipated expiration: 2030-02-19

Abstract

The utility model relates to a prefabricated superimposed sheet relates to concrete prefabricated member field, including the prefabricated plate body with fix a plurality of steel bar trusses on the prefabricated plate body, one side that the prefabricated plate body is provided with reinforcing bar truss is provided with many and connects the derivative strip, connects the length direction setting of derivative strip along reinforcing bar truss. To the relatively poor problem of current prefabricated superimposed sheet shock resistance after the cast concrete layer, the utility model discloses have and strengthen being connected between prefabricated plate body and the cast-in-place concrete layer closely degree and then the effect of reinforcing floor anti-seismic performance.

Description

Prefabricated superimposed sheet

Technical Field

The utility model belongs to the technical field of the concrete prefab and specifically relates to a prefabricated superimposed sheet is related to.

Background

The prefabricated composite slab is one of the components of a floor slab structure and is also a permanent template of a cast-in-place reinforced concrete composite layer, and a horizontal equipment pipeline can be laid in the cast-in-place composite layer; the prefabricated composite slab and the cast-in-place reinforced concrete layer are superposed into an assembled integral floor slab, and the assembled integral floor slab is suitable for high-rise buildings and large-bay buildings with high integral rigidity requirements.

The traditional Chinese patent with the publication number of CN207878747U provides a composite floor slab, which comprises a prefabricated bottom plate and a steel bar truss, wherein a steel bar framework layer is arranged inside the prefabricated bottom plate, the upper part of the steel bar framework layer is fixedly connected with the steel bar truss by welding, the steel bar truss comprises an upper chord steel bar, a lower chord steel bar and a plurality of web member steel bars, the top ends of the web member steel bars are fixedly connected with the upper chord steel bar by welding, and the bottom of the prefabricated bottom plate is provided with glass fiber gridding cloth. Therefore, pouring on the construction site is not needed, the manufacturing process is simple and convenient, the bearing capacity is high, streamlined production can be carried out in a factory, and the construction period is greatly shortened.

The above prior art solutions have the following drawbacks: in actual operation of a construction site, a cast-in-place concrete layer is required to be poured above the precast slabs to form a floor slab, and the upper surfaces of the precast slabs are planar, so that the connection surface of the precast slabs and the cast-in-place concrete layer is also planar, the precast slabs and the cast-in-place concrete layer are not connected tightly, and the precast slabs are connected only through steel bar trusses, so that the seismic resistance of the precast slabs is poor.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model aims at providing a prefabricated superimposed sheet.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a prefabricated laminated slab comprises a prefabricated slab body and a plurality of steel bar trusses fixed on the prefabricated slab body, wherein a plurality of connecting truss strips are arranged on one side, provided with a steel bar truss, of the prefabricated slab body, and the connecting truss strips are arranged along the length direction of the steel bar truss.

By adopting the technical scheme, the connecting diffraction strips are additionally arranged on the precast slab body, so that the contact area between the precast slab body and a cast-in-place concrete layer is increased, the connecting diffraction strips can play a role in better connection, and the additional connecting diffraction strips cannot cause great influence on the structural strength of the precast slab body.

The present invention may be further configured in a preferred embodiment as: the connecting truss is arranged between the adjacent steel bar truss.

By adopting the technical scheme, the connecting truss bars and the steel bar truss are not interfered with each other, and the connecting truss bars strengthen the connecting strength of the area outside the steel bar truss.

The present invention may be further configured in a preferred embodiment as: the cross section profile of the connecting diffraction bar is T-shaped.

By adopting the technical scheme, the connection effect of the connecting diffraction strips is enhanced, so that the connection between the precast slab body and the cast-in-place concrete layer is firmer and more reliable.

The present invention may be further configured in a preferred embodiment as: the connecting diffraction strips are concrete diffraction strips integrally formed with the precast slab body.

By adopting the technical scheme, the prefabricated slab is convenient to manufacture, and the connection between the connecting diffraction strips and the prefabricated slab body is firm.

The present invention may be further configured in a preferred embodiment as: and a first fillet is arranged at a transition angle between the connecting diffraction strip and the precast slab body.

By adopting the technical scheme, the stress at the mutation position of the connecting diffraction strip and the precast slab body structure is released, and the connecting strength between the connecting diffraction strip and the precast slab body is enhanced.

The present invention may be further configured in a preferred embodiment as: the connecting diffraction strips are I-shaped embedded parts embedded in the prefabricated plate body.

The present invention may be further configured in a preferred embodiment as: and a process fillet is arranged in the length direction of the connecting diffraction bar.

Through adopting above-mentioned technical scheme, when the concreten map pouring, concrete and being connected the inseparabler laminating of bar of developing during fillet structure can guarantee to connect between the cast in situ concrete layer all, guarantee simultaneously that the interior difficult space that appears of cast in situ concrete layer improves the holistic intensity of floor.

The present invention may be further configured in a preferred embodiment as: the prefabricated slab body is internally provided with a reinforcing steel bar net.

Through adopting above-mentioned technical scheme, strengthen the structural strength of prefabricated plate body, security and reliability in the prefabricated superimposed sheet of strip uses.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the connecting diffraction strips are additionally arranged on the precast slab body, so that the connection tightness between the precast slab body and a cast-in-place concrete layer is enhanced, the overall anti-seismic performance of the floor slab is enhanced, and meanwhile, the structural strength of the precast slab body is not easily influenced by a material adding mode;

the connecting effect of the connecting diffraction strips of the T-shaped structures is better, the cast-in-place concrete layer is less prone to being separated from the precast slab body, meanwhile, the T-shaped structures have smaller pouring influence on the cast-in-place concrete layer, and the interference of the connecting diffraction strips on the pouring of the cast-in-place concrete layer can be further reduced by arranging the process fillets.

Drawings

FIG. 1 is a schematic structural diagram of the first embodiment;

FIG. 2 is a schematic view of another angle of the embodiment;

FIG. 3 is an enlarged schematic view of area A of FIG. 2;

FIG. 4 is a schematic structural view of example 2;

fig. 5 is an enlarged schematic view of the region B in fig. 4.

Reference numerals: 1. a prefabricated plate body; 2. a steel bar truss; 3. connecting the diffraction strips; 4. a first rounded corner; 5. processing a round corner; 6. an I-shaped embedded part; 7. reinforcing steel bar reinforcing mesh.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1, the prefabricated plate comprises a rectangular plate-shaped prefabricated plate body 1 and a plurality of reinforcing steel bar truss frames 2 embedded in the prefabricated plate body 1, wherein the reinforcing steel bar truss frames 2 are arranged along the length direction of the prefabricated plate body 1, and the plurality of reinforcing steel bar truss frames 2 are uniformly arranged along the width direction of the prefabricated plate body 1; the inside reinforcing bar 77 that is provided with of prefabricated plate body 1, reinforcing bar 77 is pre-buried in prefabricated plate body 1, strengthens the holistic structural strength of prefabricated plate body 1.

Referring to fig. 2, a connecting truss 3 with a T-shaped cross section is arranged between the reinforced concrete truss frames, the connecting truss 3 and the precast slab body 1 are integrally cast, the connecting truss 3 is arranged along the length direction of the precast slab body 1, one connecting truss 3 is arranged between each two adjacent reinforced concrete truss frames 2, when a cast-in-place concrete layer is cast on the precast slab body 1, a T-shaped clamping structure is formed between the connecting truss 3 and the cast-in-place concrete layer, so that horizontal dislocation between the cast-in-place concrete layer and the precast slab body is not easy to occur, and the overall earthquake resistance of the floor slab is further improved.

Referring to fig. 3, a transition angle at the junction of the connecting girder 3 and the prefabricated slab body 1 is a first fillet 4, which has the function of releasing stress in the horizontal direction to enhance the connection strength between the connecting girder 3 and the prefabricated slab body 1; the edges of the connecting tie bars 3 in the length direction are provided with process fillets 5, so that the connecting tie bars 3 are conveniently and tightly attached to the concrete pouring layer, and the overall shock resistance and strength of the floor slab are further enhanced.

The implementation principle of the embodiment is as follows: the connecting diffraction bars 3 are additionally arranged between the adjacent steel bar diffraction frames 2, so that the connection tightness of the prefabricated composite slab and the cast-in-place concrete layer is increased, the cast-in-place concrete layer and the prefabricated slab body 1 are not easily separated and dislocated with each other due to vibration, and the overall earthquake resistance of the floor slab is effectively contended; the connection diffraction strip 3 and the precast slab body 1 are integrally cast, so that the connection firmness degree between the connection diffraction strip 3 and the precast slab body 1 is ensured, and the connection strength between the precast slab body 1 and cast-in-place concrete is ensured.

Example two:

referring to fig. 4 and 5, the difference between the present embodiment and the first embodiment is that the connecting diffraction bar 3 is an elongated i-shaped embedded part 6 embedded in the prefabricated slab body 1, and the first round angle 4 is not provided.

Referring to fig. 5, the i-shaped embedded part 6 is provided with a process fillet 5, which facilitates the close fitting of the concrete layer thereto, so as to enhance the overall structural degree of the floor slab.

The implementation principle of the embodiment is as follows: when the prefabricated composite slab is directly manufactured, the I-shaped embedded part 6 is embedded in the prefabricated slab body 1, and the T-shaped connecting diffraction strip 3 is formed on the prefabricated slab body 1, so that the prefabricated slab is convenient to manufacture, and the interference on the structural strength of the prefabricated slab body 1 is small; the first round angle 4 is not arranged, the prefabricated plate body 1 is not provided with a protruding structure, the prefabricated plate body is not easy to damage, and the integral structural strength of the prefabricated laminated plate is improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a prefabricated superimposed sheet, includes prefabricated plate body (1) and fixes a plurality of steel bar trusses on prefabricated plate body (1), its characterized in that: the prefabricated slab body (1) is provided with a plurality of connecting diffraction strips (3) on one side of the steel bar truss (2), and the connecting diffraction strips (3) are arranged along the length direction of the steel bar truss (2).

2. A prefabricated composite panel according to claim 1 wherein: the connecting truss (3) is arranged between the adjacent steel bar truss (2).

3. A prefabricated composite panel according to claim 1 wherein: the cross section profile of the connecting diffraction bar (3) is T-shaped.

4. A prefabricated composite panel according to claim 3 wherein: the connecting diffraction strips (3) are concrete diffraction strips integrally formed with the precast slab body (1).

5. A prefabricated composite panel according to claim 4 wherein: and a first fillet (4) is arranged at a transition angle between the connecting diffraction bar (3) and the precast slab body (1).

6. A prefabricated composite panel according to claim 3 wherein: the connecting diffraction strips (3) are I-shaped embedded parts (6) embedded in the precast slab body (1).

7. A prefabricated composite panel according to claim 3 wherein: and a process fillet (5) is arranged in the length direction of the connecting diffraction bar (3).

8. A prefabricated composite panel according to claim 1 wherein: and a steel bar reinforcing net (7) is arranged in the precast slab body (1).