Plane steel bar truss disassembly-free bottom die floor support plate with heat preservation and sound insulation functions

Abstract

The utility model discloses a plane steel bar truss disassembly-free bottom die floor support plate with heat preservation and sound insulation functions, which comprises a disassembly-free bottom die and a plurality of plane steel bar trusses arranged on the disassembly-free bottom die at intervals along the width direction of the disassembly-free bottom die, and the lower ends of the plane steel bar trusses are embedded in the disassembly-free bottom die. The upper ends of the plane steel bar trusses are connected into a whole through transverse steel bar sets which are perpendicularly orthogonal to the length direction of the disassembly-free bottom die, and a heat preservation and sound insulation layer is laid on the top face of the disassembly-free bottom die. The plane steel bar truss disassembly-free bottom die floor support plate is large in rigidity, good in quality, high in efficiency and low in cost and has the heat preservation and sound insulation functions, the longitudinal steel bars of the plane steel bar truss can be fully utilized in all stages of production, hoisting, construction installation and use, and the construction period is shortened. During construction, floor reinforcing steel bars are bound on the disassembly-free bottom die floor support plate, concrete is poured to form a floor, a heat preservation and sound insulation layer does not need to be made, the construction process is optimized, and the manufacturing cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fabricated building floor, specifically relates to a plane steel bar truss bottom formwork free dismantling floor support with heat preservation and sound insulation function. BACKGROUND

[0002] The composite floor is a fabricated monolithic floor composed of a prefabricated bottom plate and a cast-in-place reinforced concrete layer, and the composite floor has good integrity, the upper and lower surfaces of the floor are flat, the floor is convenient for decoration of a finish layer, and is suitable for high-rise buildings and large-bay buildings with high requirements for overall rigidity.

[0003] The existing bottom formwork free dismantling floor support usually uses a prefabricated bottom formwork as a formwork to bind steel bars on the upper part to pour concrete to form a floor whole, and the prefabricated bottom formwork includes profiled steel plate floor supports, profiled steel plate floor supports with triangular steel bar trusses, and bottom formwork free dismantling floor supports with triangular steel bar trusses, wherein the bottom formwork free dismantling floor supports with triangular steel bar trusses are widely used in existing fabricated floor construction because of the advantages that the bottom formwork free dismantling floor supports with triangular steel bar trusses can be free of support and formwork construction during floor construction, and do not need to be dismantled after construction. However, the floor support with a metal bottom formwork has limitations, the floor appearance is not good when there is no ceiling at the bottom of the floor support, and the floor support with a triangular truss is not suitable for use in some buildings with appearance requirements because the steel bars are usually arranged densely at the bottom of the floor support, causing waste of steel bars. In addition, the bottom formwork free dismantling floor supports described above still need to be constructed with a heat preservation layer on site after pouring concrete, increasing the construction process.

[0004] Therefore, in order to solve the above problems, the existing bottom steel bar truss formwork free dismantling floor support structure needs to be improved to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] Therefore, the bottom formwork free dismantling floor support with heat preservation and sound insulation function provided by the utility model uses a plane steel bar truss instead of a traditional triangular steel bar truss on the bottom formwork free dismantling floor support, the bottom force steel bars of the cast-in-place layer can be carried on the plane steel bar truss or not, and the spacing between the steel bars can be arranged according to design requirements, so that the plane steel bar truss saves more steel bars than the triangular truss; meanwhile, transverse steel bars are arranged between the plane steel bar trusses as plane truss top chord steel bars and plane external supports, so that the plane truss top chord steel bars are connected to form a whole, improving the overall stress performance to avoid the problem of cracking of the bottom formwork during hoisting and construction installation; the bottom formwork free dismantling floor support is made of non-metallic materials, and has a wider application range; the heat preservation and sound insulation layer is arranged on the bottom formwork free dismantling floor support, so that the heat preservation and sound insulation layer does not need to be constructed again after the subsequent construction of the floor steel bars and pouring of concrete to form the floor, the construction process is optimized, and the cost is saved.

[0006] The utility model provides a kind of plane steel bar truss bottom formwork-free floor support plate with heat preservation and sound insulation function, including bottom formwork-free and several plane steel bar trusses being arranged on the bottom formwork-free along the width direction interval of the bottom formwork-free, the lower end of the plane steel bar truss is embedded in the bottom formwork-free, the upper end of several plane steel bar trusses is connected to form a whole by the transverse steel group being arranged perpendicularly to the length direction of the bottom formwork-free, and the top surface of the bottom formwork-free is paved with heat preservation and sound insulation layer.

[0007] Further, the heat preservation and sound insulation layer is connected and fixed with the bottom formwork-free by heat preservation anchor bolt.

[0008] Further, the plane steel bar truss includes lower chord steel bars embedded in the bottom formwork-free, upper chord steel bars arranged above the bottom formwork-free and web steel bars for connecting the lower chord steel bars and the upper chord steel bars, and the lower chord steel bars, the upper chord steel bars and the web steel bars are located on the same vertical plane.

[0009] Further, the transverse steel group is composed of several uniformly spaced transverse steels.

[0010] Further, the transverse steel is arranged perpendicularly and orthogonally on the upper part or lower part of the upper chord steel bar.

[0011] Further, the web steel bar is arranged in a wave shape between the upper chord steel bar and the lower chord steel bar.

[0012] Further, it further includes bottom formwork transverse steel bars embedded in the bottom formwork-free, and the bottom formwork transverse steel bars are arranged perpendicularly and orthogonally on the upper part or lower part of the lower chord steel bar in the length direction of the lower chord steel bar.

[0013] The plane steel bar truss bottom formwork-free floor support plate with heat preservation and sound insulation function of the utility model has the advantages of large rigidity, good quality, high efficiency, low cost and heat preservation and sound insulation function, the longitudinal steel bars of the plane steel bar truss can be fully utilized in each stage of production, hoisting, construction installation and use, and after the upper and lower steel bars of floor slab are bound and the concrete is poured to form the floor slab on the plane steel bar truss bottom formwork-free floor support plate during construction, the heat preservation and sound insulation layer does not need to be made again, the construction process is optimized and the cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be further described below in combination with drawings and embodiments:

[0015] Figure 1 It is the structure schematic view of the plane steel bar truss bottom formwork-free floor support plate with heat preservation and sound insulation function in the utility model;

[0016] Figure 2 It is Figure 1 A-A sectional view in the utility model;

[0017] Figure 3 for Figure 1 B-B cross-sectional view in the figure;

[0018] In the figure: 1-plane steel bar truss; 2-transverse steel bar; 3-demolition-free bottom die; 4-lower chord steel bar; 5-upper chord steel bar; 6-web steel bar; 7-bottom die transverse steel bar; 8-thermal insulation and sound insulation layer; 9-thermal insulation anchor bolt. DETAILED DESCRIPTION

[0019] As shown in the figure, the utility model provides a plane steel bar truss demolition-free bottom die floor support plate with thermal insulation and sound insulation function, including demolition-free bottom die 3 and a plurality of plane steel bar trusses 1 which are arranged on the demolition-free bottom die 3 along the width direction of the demolition-free bottom die 3 and are spaced, the lower end of the plane steel bar truss 1 is embedded in the demolition-free bottom die 3, the upper end of a plurality of plane steel bar trusses 1 is connected to form a whole through the transverse steel bar 2 group which is arranged perpendicularly to the length direction of the demolition-free bottom die 3, the top surface of the demolition-free bottom die 3 is paved with thermal insulation and sound insulation layer 8, the transverse steel bar group is composed of a plurality of evenly spaced transverse steel bars 2,

[0020] Among them, the demolition-free bottom die 3 mainly plays the role of the formwork and is used to bear the load in the construction stage, and the demolition-free bottom die 3 in the scheme is mainly made of light weight concrete, fine stone concrete, steel fiber concrete, glass fiber plate, composite material plate and the like in the factory; the thermal insulation and sound insulation layer 8 is arranged on the top surface of the demolition-free bottom die 3, so that the plane steel bar truss demolition-free bottom die floor support plate does not need to make the thermal insulation and sound insulation layer again in the subsequent construction (after the floor steel bar is bound and the concrete is poured to form the floor), thereby reducing the dead weight of the overall structure of the building, and optimizing the construction process and saving the cost; and the plane steel bar truss 1 is used instead of the triangular steel bar truss on the traditional demolition-free bottom die steel bar truss floor support plate, which can make the plane steel bar truss 1 more flexible on the demolition-free bottom die 3, reduce the use amount of the floor bottom steel bar, make the plane steel bar truss demolition-free bottom die floor support plate have the advantages of large rigidity, good quality, high efficiency and low cost, and realize the cross-mid free support and formwork-free construction; meanwhile, the transverse steel bars 2 are arranged between the plane steel bar trusses 1, which can effectively avoid the cracking problem of the plane steel bar truss demolition-free bottom die floor support plate in the hoisting and construction installation process, and the longitudinal steel bars on the plane steel bar truss can be fully utilized in each stage of production, hoisting, construction installation and use; when the plane steel bar truss demolition-free bottom floor support plate is designed, the thickness, width and length of the demolition-free bottom die 3, the arrangement spacing between the plane steel bar trusses, the arrangement spacing between the transverse steel bars and the specific steel bar diameter are determined according to the design needs.

[0021] In the embodiment, the heat preservation and sound insulation layer 8 is connected and fixed with the demolding formwork 3 through the heat preservation anchor bolt 9; wherein the heat preservation and sound insulation layer 8 can be made of extruded polystyrene board XPS, expanded polystyrene board EPS, polyurethane foam, rock wool board, glass wool board and the like, and the heat preservation anchor bolt 9 has the characteristics of anti-aging, anti-temperature sudden change, corrosion resistance, cold and heat resistance, high bearing capacity, high pressure resistance, good tensile performance, so that the heat preservation and sound insulation layer 8 is more convenient to be fixed on the demolding formwork 3, and is not easy to deform after installation.

[0022] In the embodiment, the plane steel bar truss 1 comprises the lower chord steel bar 4 embedded in the demolding formwork 3, the upper chord steel bar 5 arranged above the demolding formwork 3, and the web steel bar 6 for connecting the lower chord steel bar 4 and the upper chord steel bar 5, wherein the lower chord steel bar 4, the upper chord steel bar 5 and the web steel bar 6 are located in the same vertical plane; the transverse steel bar 2 is arranged vertically and orthogonally on the upper part or the lower part of the upper chord steel bar 5; the web steel bar 6 is arranged in a wave shape between the upper chord steel bar 5 and the lower chord steel bar 4; and the transverse steel bar 2 is arranged on the upper chord steel bar 5 or the lower chord steel bar 4. Figures 1 to 3 As shown in the figure, the plane steel bar truss 1 is composed of the lower chord steel bar 4, the upper chord steel bar 5 and the web steel bar 6 located in the same vertical plane, and the web steel bar 6 is arranged in a wave shape between the upper chord steel bar 5 and the lower chord steel bar 4 to ensure the connection strength of the upper chord steel bar 5 and the lower chord steel bar 4, and to strengthen the overall strength of the plane steel bar truss 1. The lower chord steel bar 4 only serves as a stress bar of the demolding formwork and does not participate in the overall stress of the floor, and the floor stress bar parallel to the lower chord steel bar needs to be arranged additionally. Compared with the floor formed by pouring concrete on the conventional demolding formwork steel bar truss floor support plate, the floor support plate as the bottom formwork and the plane steel bar truss demolding formwork according to the embodiment has more flexible arrangement of truss spacing and more flexible arrangement of floor bottom steel bar spacing, and saves the amount of steel bars.

[0023] In the embodiment, the bottom formwork transverse steel bar 7 embedded in the demolding formwork 3 is further included, the bottom formwork transverse steel bar 7 is arranged vertically and orthogonally to the length direction of the lower chord steel bar 4 on the upper part or the lower part of the lower chord steel bar 4; and the bottom formwork transverse steel bar 7 is fixed by binding or welding after being closely attached to the lower chord steel bar 4.

[0024] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limited, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, and all of them should be covered in the scope of the claims of the utility model.

Claims

1. A flat steel truss floor deck with thermal insulation and sound insulation functions, which is characterized by: The detachable bottom mould comprises a detachable bottom mould and a plurality of plane steel bar trusses arranged on the detachable bottom mould along the width direction of the detachable bottom mould, the lower ends of the plane steel bar trusses are embedded in the detachable bottom mould, the upper ends of the plurality of plane steel bar trusses are connected to form a whole through a horizontal steel bar group arranged vertically and orthogonally to the length direction of the detachable bottom mould, and a heat preservation and sound insulation layer is laid on the top surface of the detachable bottom mould.

2. The flat steel bar truss disassembly-free bottom die floor deck with heat preservation and sound insulation functions according to claim 1, characterized in that: The heat preservation and sound insulation layer is connected and fixed with the detachable bottom mould through a heat preservation anchor bolt.

3. The flat steel bar truss disassembly-free bottom die floor deck with heat preservation and sound insulation functions according to claim 1, characterized in that: The plane steel bar truss comprises a lower chord steel bar embedded in the detachable bottom mould, an upper chord steel bar arranged above the detachable bottom mould and a web steel bar for connecting the lower chord steel bar and the upper chord steel bar, and the lower chord steel bar, the upper chord steel bar and the web steel bar are located on the same vertical plane.

4. The flat steel bar truss disassembly-free bottom die floor deck with heat preservation and sound insulation functions according to claim 3, characterized in that: The horizontal steel bar group is composed of a plurality of uniformly spaced horizontal steel bars.

5. The flat steel bar truss disassembly-free bottom die floor deck with heat preservation and sound insulation functions according to claim 4, characterized in that: The horizontal steel bar is arranged vertically and orthogonally to the upper part or the lower part of the upper chord steel bar.

6. The flat steel bar truss disassembly-free bottom die floor deck with heat preservation and sound insulation functions according to claim 4, characterized in that: The web steel bar is arranged in a wave shape between the upper chord steel bar and the lower chord steel bar.

7. The flat steel bar truss thermal and acoustic insulation function floor support plate according to claim 5, characterized in that: The detachable bottom mould further comprises a bottom mould horizontal steel bar embedded in the detachable bottom mould, and the bottom mould horizontal steel bar is arranged in the upper part or the lower part of the lower chord steel bar vertically and orthogonally to the length direction of the lower chord steel bar.

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