CN213359049U

CN213359049U - Assembled superimposed sheet

Info

Publication number: CN213359049U
Application number: CN202021700088.5U
Authority: CN
Inventors: 邱伯谦
Original assignee: Changsha Juxing Light Weight Building Materials Co ltd
Current assignee: Hunan Chuan Qi building materials Co.,Ltd.
Priority date: 2020-08-15
Filing date: 2020-08-15
Publication date: 2021-06-04
Anticipated expiration: 2030-08-15

Abstract

The utility model discloses an assembled superimposed sheet, including concrete bottom plate and truss set up on the concrete bottom plate, still be provided with in the concrete bottom plate with the parallel longitudinal reinforcement of concrete bottom plate length direction, the truss includes the upper chord parallel with the concrete bottom plate length direction, and sets up the web member at the upper chord perpendicularly, the web member is connected on the upper chord through welding fixed connection, the web member sets up to Λ shape structure, and two lower extremes of Λ shape structure set up to the structure of taking the hook; the method has the advantages of improving the construction efficiency, reducing the cost and the like.

Description

Assembled superimposed sheet

(I) technical field

The utility model relates to a bottom plate for the building especially relates to an assembled superimposed sheet.

(II) background of the invention

In recent years, the concrete truss composite slab is more and more widely applied to the building industry, because the composite slab can reduce the quantity of construction templates and scaffolds in the construction process, the construction efficiency is improved, and the construction cost is further reduced. The existing concrete truss laminated slab mainly comprises a bottom plate and a truss, the truss comprises an upper chord member, a web member and a lower chord member, the web member is a continuous bending reinforcing steel bar, the top bending part of the web member is connected with the outer wall of the upper chord member, the bottom bending part of the web member is embedded in the bottom plate, a transverse reinforcing steel bar embedded in the bottom plate penetrates through the upper side of an included angle of the bottom bending part of the web member, and a plurality of longitudinal reinforcing steel bars are embedded in the bottom plate. When the concrete truss composite slab prepared by the technology is used for grabbing the upper chord member by the hoisting equipment for hoisting, the bottom of the web member is bent and stressed on the transverse steel bar, so that the web member cannot be separated from the concrete bottom plate.

(III) contents of utility model

Not enough to prior art, the utility model provides an assembled superimposed sheet improves the efficiency of construction, advantages such as reduce cost.

The technical scheme of the utility model is that:

the utility model provides an assembled superimposed sheet, includes concrete bottom plate and the truss of setting on concrete bottom plate, still be provided with in the concrete bottom plate with the parallel longitudinal reinforcement of concrete bottom plate length direction, the truss include with the parallel last chord member of concrete bottom plate length direction with set up the web member at last chord member perpendicularly, the web member passes through welded fastening and connects on last chord member, the bottom of web member is pre-buried in concrete bottom plate, its characterized in that: the thickness is 3-5CM at the bottom of the concrete plate, vertical reinforcing bar is the prestressing tendons, the web member sets up to Λ shape structure, and two lower extremes of Λ shape structure set up to the hook structure, the hook structure vertical direction of taking of web member sets up, vertical reinforcing bar is followed pass and fix in the hook structure, and the Λ shape structure upper end at the both ends of last chord member sets up towards the bottom plate middle part slope, and perhaps the both ends welding of going up the chord member has the Λ shape structure of relative setting in last chord member both sides. In this way, the reversed V-shaped structure with the hook is arranged and is perpendicular to the longitudinal direction, so that the manufacturing of the assembled laminated slab is facilitated, the web member and the longitudinal steel bar are directly clamped into the structure with the hook without binding or welding connection during the manufacturing, and the position of the longitudinal steel bar in the bottom plate is more accurate; because the lambda-shaped structure upper end at the both ends of upper chord sets up towards the bottom plate middle part slope, perhaps the both ends welding of upper chord has the lambda-shaped structure of setting up in upper chord both sides relatively, therefore can make the upper chord can not be at longitudinal direction displacement, has guaranteed the stability of structure. The assembled laminated slab has the advantages that tensile stress does not occur under the action of vertical load, and the stability is enhanced.

Preferably, the hooked structures are oppositely arranged inwards or outwards.

Preferably, the upper chord is a steel pipe.

Further, a filling material is poured into the inner cavity of the steel pipe, and the filling material is expanded concrete or expanded mortar. Therefore, the filling material expands in the solidification process, so that the steel pipe is stressed to generate prestress, and the capability of resisting vertical load of the steel pipe is improved.

Furthermore, at least one prestressed reinforcement is pre-embedded in the inner cavity of the steel pipe.

Preferably, the concrete bottom plate comprises lightweight aggregate, and the lightweight aggregate comprises perlite or ceramsite.

Preferably, an anti-cracking net is arranged in the concrete bottom plate.

Preferably, the side edges of the two longitudinal ends of the concrete bottom plate are provided with an upper chamfer and a lower chamfer. Therefore, when concrete is poured, the concrete quickly flows into the bottom plate for concrete prestress superposition, a wedge is formed at the chamfer, the connection between the adjacent bottom plates is strengthened, the formation of cracks is reduced, and the combination of the bottom plate for concrete prestress superposition and the concrete is firmer.

Preferably, a transverse reinforcing steel bar extends out of the chamfered edge in the concrete bottom plate, and the transverse reinforcing steel bar is tilted upwards relative to the bottom plate.

(IV) description of the drawings

FIG. 1, FIG. 2 and FIG. 3 are a cross-sectional view, a longitudinal top view and a longitudinal sectional view of the first embodiment;

fig. 4, 5 and 6 are a cross-sectional view, a longitudinal plan view and a longitudinal sectional view of the second embodiment.

Wherein, 1 is a concrete bottom plate, 2 is a truss, 3 is a longitudinal steel bar, 4 is an upper chord, 5 is a web member, 7 is a structure with hooks, 11 is a filling material, and 12 is a prestressed steel bar.

(V) detailed description of the preferred embodiments

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

The first embodiment is as follows:

as shown in fig. 1, fig. 2 and fig. 3, an assembled composite slab includes a concrete bottom plate 1 and a truss 2 arranged on the concrete bottom plate, a prestressed tendon parallel to the length direction of the concrete bottom plate is further arranged in the concrete bottom plate 1, the truss 2 includes an upper chord 4 parallel to the length direction of the concrete bottom plate and a web member 5 vertically arranged on the upper chord, the web member 5 is fixedly connected to the upper chord 4 by welding, the bottom end of the web member 5 is embedded in the concrete bottom plate 1, the web member 5 is arranged in a reversed V-shaped structure, two lower ends of the reversed V-shaped structure are arranged in a hooked structure 7, the hooked structure 7 of the web member is arranged perpendicular to the longitudinal direction, the longitudinal steel bar 3 passes through and is fixed in the hooked structure, and the upper ends of the reversed V-shaped structures at two ends of the upper chord 4 are obliquely arranged towards the middle of the concrete bottom plate.

Example two:

fig. 4, 5 and 6 are schematic diagrams of the second embodiment. The second embodiment is different from the first embodiment in that the Λ -shaped structures oppositely arranged on both sides of the upper chord are welded at both ends of the upper chord 4 in the second embodiment.

The foregoing is illustrative of particular embodiments of the present invention and reference should be made to the implementation of apparatus and structures not specifically described herein which are illustrated and described in detail as commonly practiced in the art.

Simultaneously the utility model discloses above-mentioned embodiment only is for the explanation the utility model discloses technical scheme uses, only does the utility model discloses technical scheme's enumeration is not used for the restriction the utility model discloses a technical scheme and protection scope. The modifications of the technical solutions disclosed in the claims and the specification by the equivalent technical means and the equivalent devices should not be considered to be beyond the scope of the claims and the specification of the present invention.

Claims

1. The utility model provides an assembled superimposed sheet, includes concrete bottom plate and the truss of setting on concrete bottom plate, still be provided with in the concrete bottom plate with the parallel longitudinal reinforcement of concrete bottom plate length direction, the truss include with the parallel last chord member of concrete bottom plate length direction with set up the web member at last chord member perpendicularly, the web member passes through welded fastening and connects on last chord member, the bottom of web member is pre-buried in concrete bottom plate, its characterized in that: the thickness is 3-5CM at the bottom of the concrete plate, vertical reinforcing bar is the prestressing tendons, the web member sets up to Λ shape structure, and two lower extremes of Λ shape structure set up to the hook structure, the hook structure vertical direction of taking of web member sets up, vertical reinforcing bar is followed pass and fix in the hook structure, and the Λ shape structure upper end at the both ends of last chord member sets up towards the bottom plate middle part slope, and perhaps the both ends welding of going up the chord member has the Λ shape structure of relative setting in last chord member both sides.

2. The fabricated composite slab of claim 1, wherein said hooked structures are oppositely disposed inwardly or outwardly.

3. The fabricated composite slab of claim 1, wherein said upper chord member is a steel pipe.

4. The fabricated composite slab according to claim 3, wherein the inner cavity of the steel pipe is cast with a filler, and the filler is expansive concrete or expansive mortar.

5. The fabricated composite slab of claim 3, wherein at least one prestressed reinforcement is embedded in the inner cavity of the steel tube.

6. Fabricated composite slab according to any of claims 1-5, characterised in that the concrete bottom slab comprises lightweight aggregate, which comprises perlite or ceramsite.

7. Fabricated composite slab as claimed in any one of claims 1-5, characterized in that a crack-resistant net is provided in the concrete bottom plate.

8. Fabricated composite slab according to any one of claims 1-5, characterized in that the concrete bottom slab is provided with chamfers at the upper side edges of both longitudinal ends.

9. The fabricated composite slab of claim 8, wherein a transverse reinforcement extends from the chamfered edge in the concrete bottom slab, and the transverse reinforcement is tilted upward relative to the bottom slab.