Fabricated prestressed laminated slab

Abstract

The utility model discloses an assembly type prestress laminated slab which comprises a laminated slab main body, the laminated slab main body comprises a prestress steel bar assembly and a concrete slab body, the prestress steel bar assembly is arranged inside the concrete slab body, and the concrete slab body is formed by pouring. The prestressed steel bar assembly comprises a plurality of sets of stress bars, a plurality of sets of steel bar trusses and a plurality of sets of distribution bars, and the multiple sets of stress bars, the multiple sets of steel bar trusses and the multiple sets of distribution bars are fixedly connected in a welded mode. The prestressed reinforcement assembly is a prefabricated part, and when the laminated slab is produced, the reinforcement structural parts do not need to be positioned, laid and bound, so that the production efficiency of the laminated slab main body is improved, the production steps of the laminated slab main body are simplified, energy conservation and consumption reduction are realized in the production process, the reinforcement structural parts are connected in a welding manner, and the production cost is reduced. And compared with binding connection, the construction speed is high, and the working efficiency can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laminated plates, and specifically relates to a precast prestressed laminated plate. Background Art

[0002] The prestressed laminated plate is a structural plate, which is composed of multiple layers of prestressed steel bars and concrete and other materials. These prestressed steel bars are pre-tensioned in the concrete to generate compressive stress, thereby improving the strength and stiffness of the laminated plate. It is applicable to high-rise buildings and large-span buildings with relatively high overall stiffness requirements. The precast prestressed laminated plate has good integrity, and the upper and lower surfaces of the plate are flat, which is convenient for the decoration of the finishing layer. It is the most used component in precast buildings.

[0003] When producing precast prestressed laminated plates, it is necessary to first assemble the formwork according to requirements, then lay the steel bar components, and then use the method of steel bar binding to bind and fix the steel bar structure. Finally, casting and molding are carried out. Due to the large number of steel bar structures, the laying and binding take a long time, and the production efficiency of the laminated plate needs to be improved. Content of the Utility Model

[0004] The purpose of the utility model is to provide a precast prestressed laminated plate to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a precast prestressed laminated plate, including a laminated plate main body, the laminated plate main body includes a prestressed steel bar component and a concrete slab, and the prestressed steel bar component is placed inside the concrete slab. The concrete slab is formed by casting. The prestressed steel bar component includes multiple groups of stress bars, multiple groups of steel bar trusses and multiple groups of distribution bars. Multiple groups of the stress bars, multiple groups of the steel bar trusses and multiple groups of the distribution bars are fixedly connected by welding.

[0006] Among them, the stress bars and the distribution bars are fixedly connected by welding, and a first welding point is formed at the connection.

[0007] Among them, the distribution bars and the steel bar trusses are fixedly connected by welding, and a second welding point is formed at the connection.

[0008] Among them, multiple groups of the distribution bars are arranged at equal intervals along the axis direction of the stress bars.

[0009] Among them, multiple groups of the distribution bars and multiple groups of the stress bars are arranged perpendicular to each other.

[0010] Among them, multiple groups of the steel bar trusses are arranged at equal intervals along the axis direction of the distribution bars.

[0011] Among them, multiple groups of the distribution bars and multiple groups of the steel bar trusses are arranged perpendicular to each other.

[0012] Among them, multiple groups of the stress-bearing steel bars and multiple groups of the steel bar trusses are arranged parallel to each other.

[0013] Among them, both ends of multiple groups of the stress-bearing steel bars penetrate through the concrete slab and extend to the outside of the concrete slab, both ends of multiple groups of the distribution steel bars penetrate through the concrete slab and extend to the outside of the concrete slab, and the upper parts of multiple groups of the steel bar trusses extend to the outside of the concrete slab.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. Multiple groups of the stress-bearing steel bars, multiple groups of the steel bar trusses and multiple groups of the distribution steel bars of the present utility model are welded and fixed together to prefabricate a prestressed steel bar assembly. The prestressed steel bar assembly is a prefabricated component. When producing the main body of the composite slab, use a hoisting device or manual labor to place the prefabricated prestressed steel bar assembly at a designated position on the formwork for fixation, and then pour concrete. There is no need to position, lay and tie the steel bar structural members, thereby improving the production efficiency of the main body of the composite slab, simplifying the production steps of the main body of the composite slab, and achieving energy conservation and consumption reduction during the production process.

[0016] 2. The present utility model uses welding to connect the steel bar structural members. Compared with binding connection, the welded fixed connection is accurate, not prone to errors, and the construction speed is fast, which can greatly improve the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the main body of the composite slab of the present utility model;

[0018] Figure 2 is a schematic diagram of the structure of the prestressed steel bar assembly of the present utility model;

[0019] Figure 3 is a schematic diagram of the connection between the stress-bearing steel bars and the distribution steel bars of the present utility model;

[0020] Figure 4 is a schematic diagram of the connection between the distribution steel bars and the steel bar trusses of the present utility model.

[0021] In the figure: 1. Main body of the composite slab; 2. Prestressed steel bar assembly; 3. Concrete slab; 21. Stress-bearing steel bars; 22. Steel bar trusses; 23. Distribution steel bars; 24. First welding point; 25. Second welding point. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 , the present utility model provides a technical solution: a prefabricated prestressed composite slab, including a composite slab main body 1, the composite slab main body 1 includes a prestressed steel bar assembly 2 and a concrete slab 3, and the prestressed steel bar assembly 2 is placed inside the concrete slab 3. The concrete slab 3 is formed by casting. The prestressed steel bar assembly 2 includes multiple groups of stress bars 21, multiple groups of steel bar trusses 22 and multiple groups of distribution bars 23. The multiple groups of stress bars 21, the multiple groups of steel bar trusses 22 and the multiple groups of distribution bars 23 are fixedly connected by welding.

[0024] The multiple groups of stress bars 21, the multiple groups of steel bar trusses 22 and the multiple groups of distribution bars 23 are welded and fixed together to prefabricate the prestressed steel bar assembly 2 in advance. The prestressed steel bar assembly 2 is a prefabricated component. When producing the composite slab main body 1, first assemble the formwork according to requirements, and then use a hoisting device or manual labor to place the prefabricated prestressed steel bar assembly 2 at the designated position of the formwork for fixation. After the prestressed steel bar assembly 2 is positioned, use a concrete placing machine to pour concrete slurry. The concrete slurry solidifies inside the formwork to form the concrete slab 3. The concrete slab 3 and the prestressed steel bar assembly 2 together constitute the composite slab main body 1. The composite slab main body 1 is a prefabricated structure, which is prefabricated through a mold, and is shipped out of the factory after curing, and transported to the construction site for assembly. After installation at the construction site, the cast-in-place reinforced concrete layer is poured, and finally it becomes an integral floor slab.

[0025] The use of the composite slab main body 1 can reduce the amount of concrete pouring at the construction site, reduce the noise pollution during concrete vibration, conform to the energy conservation and emission reduction policy, has a fast construction progress, can shorten the construction period, improve work efficiency, save labor, and reduce construction costs.

[0026] The prestressed steel bar assembly 2 constituting the composite slab main body 1 is a prefabricated component. When producing the composite slab main body 1, there is no need to position, lay and tie the steel bar structural members, thereby improving the production efficiency of the composite slab main body 1, simplifying the production steps of the composite slab main body 1, and realizing energy conservation and consumption reduction during the production process.

[0027] Among them, the stress bar 21 and the distribution bar 23 are fixedly connected by welding, and a first welding point 24 is formed at the connection.

[0028] Among them, the distribution bar 23 and the steel bar truss 22 are fixedly connected by welding, and a second welding point 25 is formed at the connection.

[0029] Multiple groups of stress-bearing steel bars 21, multiple groups of steel bar trusses 22 and multiple groups of distribution steel bars 23 are connected by welding. Compared with binding connection, the welded fixed connection is accurate, not prone to errors, and has a fast construction speed, which can greatly improve work efficiency.

[0030] Among them, multiple groups of distribution steel bars 23 are arranged at equal intervals along the axial direction of the stress-bearing steel bars 21.

[0031] Among them, multiple groups of distribution steel bars 23 and multiple groups of stress-bearing steel bars 21 are arranged perpendicular to each other.

[0032] Among them, multiple groups of steel bar trusses 22 are arranged at equal intervals along the axial direction of the distribution steel bars 23.

[0033] Among them, multiple groups of distribution steel bars 23 and multiple groups of steel bar trusses 22 are arranged perpendicular to each other.

[0034] Multiple groups of stress-bearing steel bars 21 bear tension and shear resistance. Multiple groups of distribution steel bars 23 are arranged on the upper part of multiple groups of stress-bearing steel bars 21 and are perpendicular to the stress-bearing steel bars 21. The function of multiple groups of distribution steel bars 23 is to fix the position of the stress-bearing steel bars 21 and disperse the load on the main body 1 of the composite slab to the stress-bearing steel bars 21. At the same time, it can also prevent cracks generated in the direction perpendicular to the stress-bearing steel bars 21 due to reasons such as concrete shrinkage and temperature changes. The distribution steel bars 23 belong to structural steel bars.

[0035] Among them, multiple groups of stress-bearing steel bars 21 and multiple groups of steel bar trusses 22 are arranged parallel to each other.

[0036] By means of multiple groups of steel bar trusses 22, the load-bearing capacity of the overall main body 1 of the composite slab is increased, making the main body 1 of the composite slab have a compact structure, good rigidity, able to bear a large load, improving the stability of the main body 1 of the composite slab, making it not easy to deform and crack, and having a long service life.

[0037] Among them, both ends of multiple groups of stress-bearing steel bars 21 penetrate through the concrete slab body 3 and extend to the outside of the concrete slab body 3. Both ends of multiple groups of distribution steel bars 23 penetrate through the concrete slab body 3 and extend to the outside of the concrete slab body 3. The upper part of multiple groups of steel bar trusses 22 extends to the outside of the concrete slab body 3. When assembling the main body 1 of the composite slab, the sling of the hoisting equipment can be hung on the upper part of multiple groups of steel bar trusses 22 and used as a connection point, which is conducive to the on-site construction.

[0038] Working principle: Multiple groups of stress bars 21, multiple groups of steel bar trusses 22 and multiple groups of distribution bars 23 are welded and fixed together to prefabricate a prestressed steel bar assembly 2. The prestressed steel bar assembly 2 is a prefabricated part. When producing the main body 1 of the composite slab, first assemble the formwork according to requirements, and then use a hoisting device or manual labor to place the prefabricated prestressed steel bar assembly 2 at the designated position on the formwork and fix it. After the prestressed steel bar assembly 2 is positioned, use a concrete placing boom to pour concrete slurry. The concrete slurry solidifies inside the formwork to form a concrete slab body 3. The concrete slab body 3 and the prestressed steel bar assembly 2 together constitute the main body 1 of the composite slab. After curing, it is shipped out of the factory and transported to the construction site for assembly. The main body 1 of the composite slab is hoisted and positioned by a hoisting device, installed at the designated position, and then the cast-in-place reinforced concrete layer is poured to finally form an integral floor slab.

[0039] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled prestressed composite plate, comprising a composite plate body (1), characterized in that: The composite slab body (1) comprises a prestressed steel bar assembly (2) and a concrete slab body (3), wherein the prestressed steel bar assembly (2) is placed inside the concrete slab body (3), and the concrete slab body (3) is cast; the prestressed steel bar assembly (2) comprises a plurality of groups of stress-bearing bars (21), a plurality of groups of steel bar trusses (22), and a plurality of groups of distribution bars (23); the plurality of groups of stress-bearing bars (21), the plurality of groups of steel bar trusses (22), and the plurality of groups of distribution bars (23) are fixedly connected by welding.

2. The prestressed composite slab according to claim 1, characterized in that: The force-bearing ribs (21) and the distribution ribs (23) are fixedly connected by welding, and a first welding point (24) is formed at the connection.

3. The prestressed composite slab according to claim 1, characterized in that: The distribution ribs (23) are fixedly connected to the steel bar truss (22) by welding, and a second welding point (25) is formed at the connection.

4. The prefabricated prestressed composite slab according to claim 1, characterized in that: The plurality of groups of distribution ribs (23) are evenly spaced and arranged along the axial direction of the force-bearing ribs (21).

5. The prefabricated prestressed composite slab according to claim 1, characterized in that: The multiple groups of distribution ribs (23) and the multiple groups of force-bearing ribs (21) are arranged perpendicular to each other.

6. The prefabricated prestressed composite slab according to claim 1, characterized in that: The plurality of groups of steel bar trusses (22) are evenly spaced and arranged along the axis direction of the distribution bars (23).

7. The prefabricated prestressed composite slab according to claim 1, characterized in that: The multiple groups of distribution bars (23) and the multiple groups of steel bar trusses (22) are arranged perpendicular to each other.

8. The assembled prestressed composite slab according to claim 1, characterized in that: The plurality of groups of stress-bearing bars (21) and the plurality of groups of reinforcement trusses (22) are arranged parallel to each other.

9. The assembled prestressed composite slab according to claim 1, characterized in that: Both ends of the plurality of groups of force-bearing bars (21) penetrate the concrete slab (3) and extend to the outside of the concrete slab (3); both ends of the plurality of groups of distribution bars (23) penetrate the concrete slab (3) and extend to the outside of the concrete slab (3); and the upper parts of the plurality of groups of steel bar trusses (22) extend to the outside of the concrete slab (3).

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