Disassembly-free integrated shear-resistant steel bar truss concrete floor support plate

Abstract

The utility model discloses a disassembly-free integrated shear-resistant steel bar truss concrete floor support plate, which relates to the technical field of building construction, and comprises a concrete bottom plate, a truss mechanism convenient for shear-resistant support is arranged on the concrete bottom plate, and the truss mechanism is arranged on the concrete bottom plate. The truss mechanism comprises a plurality of anti-shearing horse stools and truss rods, the truss rods are fixedly installed at the upper end of the concrete bottom plate at equal intervals, the number of the anti-shearing horse stools is multiple, and each anti-shearing horse stool is fixedly installed at the upper end of the concrete bottom plate. According to the utility model, the truss rods are matched with the concrete bottom plate, so that the integrated disassembly-free combination is realized, the field steel bar binding work amount is reduced, the construction progress is accelerated, the construction safety guarantee is increased, the condition of uneven steel bar binding quality caused by manual binding is avoided, and the construction bearing effect of the floor is ensured.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a non-dismantling integrated shear-resistant steel truss concrete floor deck. Background Technology

[0002] With the continuous development of the construction industry and the gradual maturation of prefabricated buildings, reinforced concrete truss floor slabs have emerged and been widely adopted in the prefabricated building industry. Reinforced concrete truss floor slabs consist of a steel truss and a precast base slab. When using reinforced concrete truss floor slabs, multiple slabs are typically assembled to form a pouring plane. Concrete is then poured onto this plane, allowing the concrete to solidify and the steel truss floor slabs to form an integrated load-bearing floor structure. It generally has the following structure:

[0003] Steel truss: The steel truss for concrete floor slabs includes web reinforcement, top chord reinforcement, bottom chord reinforcement, and precast slab. There are two sets of web reinforcement arranged opposite each other. The upper end of each set of web reinforcement is located above the precast slab, and the lower end of each set of web reinforcement extends into the precast slab. The top chord reinforcement is located between the two sets of web reinforcement and connects to the upper part of the two sets of web reinforcement. The bottom chord reinforcement is located below the top chord reinforcement and connects to the web reinforcement.

[0004] Precast base slab: It is generally composed of fiber fine stone concrete and fiberglass mesh or steel wire mesh, which has good stability, weather resistance and anti-aging properties.

[0005] However, existing reinforced concrete truss floor slabs have the following drawbacks: insufficient anchorage force between the steel truss and the precast base slab results in poor shear resistance at the interface between the old and new concrete layers in the common floor structure formed after the concrete is poured on site. This can lead to relative slippage or cracking between the old and new concrete layers when the floor structure is subjected to large loads or vibrations, affecting the integrity and load-bearing capacity of the floor slab. Utility Model Content

[0006] Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides a non-removable integrated shear-resistant reinforced concrete floor slab. This solves the problem that insufficient anchorage force between the steel truss and the precast base plate in existing reinforced concrete floor slabs leads to poor shear resistance at the interface between the old and new concrete layers in the common floor structure formed after on-site concrete pouring. This can cause relative slippage or cracking between the old and new concrete layers when the floor structure is subjected to large loads or vibrations, affecting the integrity and load-bearing capacity of the floor slab.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A non-removable integrated shear-resistant reinforced concrete floor slab includes a concrete base slab. A truss mechanism for shear support is provided on the concrete base slab. The truss mechanism includes shear supports and truss rods. Multiple truss rods are equidistantly fixed to the upper end of the concrete base slab. Multiple shear supports are also fixed to the upper end of the concrete base slab. Each truss rod integrates a top chord and diagonal web reinforcements. Multiple diagonal web reinforcements are distributed on both sides of the top chord with the top chord as the axis of symmetry. Each diagonal web reinforcement is connected by a bend, which is an arc shape. A second bottom chord reinforcement is also fixedly installed at the bend of each diagonal web reinforcement. The angle between the bend and the horizontal plane formed by the two second bottom chord reinforcements is 0-90 degrees. At least two support posts are fixedly installed between each top chord reinforcement and the concrete base slab.

[0010] Preferably, a first lower chord is fixedly installed at the side end of each of the oblique web reinforcements.

[0011] Preferably, a connecting bar is fixedly installed on the inner side wall of each of the inclined web bars, and an interlacing bar is fixedly installed between each of the connecting bars and the supporting upright.

[0012] Compared with the prior art, the present invention has the following beneficial effects.

[0013] I. This device achieves an integrated, non-dismantling assembly by setting up truss rods and concrete base slabs, reducing the amount of on-site rebar tying work, speeding up the construction progress, increasing construction safety, and avoiding the inconsistent quality of rebar tying caused by manual binding, thus ensuring the load-bearing capacity of the floor slab.

[0014] Second, by incorporating top chord reinforcement, support columns, diagonal web reinforcement, connecting reinforcement, and interlacing reinforcement, this device provides better support for the stability of the truss members, thereby better distributing the forces on the truss members, ensuring the stability of the support, and improving the shear resistance of the device. Attached Figure Description

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0016] Figure 1 This is a structural diagram of the concrete base plate of this utility model;

[0017] Figure 2This is a structural diagram of the anti-shear trestle of this utility model;

[0018] Figure 3 This is a structural diagram of the truss rod of this utility model;

[0019] Figure 4 This is an exploded view of the truss rod structure of this utility model.

[0020] Legend: 1. Concrete base slab; 2. Shear support; 3. Truss member; 31. Top chord reinforcement; 32. Supporting upright; 33. Diagonal web reinforcement; 34. Connecting reinforcement; 35. First bottom chord reinforcement; 36. Second bottom chord reinforcement; 37. Cross reinforcement. Detailed Implementation

[0021] This application provides a non-removable integrated shear-resistant reinforced concrete floor slab, effectively solving the technical problem that insufficient anchorage force between the steel truss and the precast base plate in existing reinforced concrete floor slabs leads to poor shear resistance at the interface between the old and new concrete layers in the common floor structure formed after on-site concrete pouring. This can cause relative slippage or cracking between the old and new concrete layers under heavy loads or vibrations, affecting the integrity and load-bearing capacity of the floor slab. This device achieves a non-removable integrated combination by setting up truss rods 3 and concrete base plate 1, reducing the amount of on-site steel reinforcement binding work, accelerating the construction progress, increasing construction safety, and avoiding the inconsistent quality of steel reinforcement binding caused by manual binding, thus ensuring the load-bearing effect of the floor slab.

[0022] Example

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical solution in this application embodiment effectively solves the technical problems in the existing load-bearing slab construction, such as the cumbersome rebar tying work, which requires a large investment of manpower and time, inconsistent rebar tying quality due to human factors, affecting the construction quality of the floor slab, and poor shear resistance of the bonding surface. Under conditions such as the floor slab bearing large loads or vibrations, relative slippage or cracking may occur between the old and new concrete layers, affecting the integrity and load-bearing capacity of the floor slab. The overall idea is as follows: a non-removable integrated shear-resistant steel truss concrete floor slab, including a concrete base slab 1. A truss mechanism for shear support is provided on the concrete base slab 1. The truss mechanism includes shear supports 2 and truss rods 3. There are multiple truss rods 3, and each truss rod 3 is fixedly installed at equal intervals on the upper end of the concrete base slab 1. There are multiple shear supports 2, and each shear support 2 is fixedly installed on the upper end of the concrete base slab 1. The device is equipped with diagonal web reinforcement 33 and upper chord reinforcement 31 in cooperation. At the same time, shear supports 2 are anchored in the concrete base slab 1, which can improve the shear resistance of the interface between the old and new concrete between the concrete base slab 1 and the post-cast concrete layer.

[0024] Each truss member 3 is equipped with an upper chord bar 31 and diagonal web bars 33. There are multiple diagonal web bars 33. Each diagonal web bar 33 is distributed on both sides of the upper chord bar 31 with the upper chord bar 31 as the axis of symmetry. Each diagonal web bar 33 is connected by a bend, which is an arc. The same second lower chord bar 36 is also fixedly installed at the bend of each diagonal web bar 33. The angle between the bend and the horizontal plane formed by the bend and the two second lower chord bars 36 is 0 to 90 degrees. The bend can increase the anchorage force between the truss member 3 and the concrete base plate 1. The second lower chord bar 36 connected to the bend can increase the stiffness of the floor slab and reduce the amount of on-site support work.

[0025] At least two support poles 32 are fixedly installed between each upper chord 31 and the concrete base slab 1. Each diagonal web 33 has a first lower chord 35 fixedly installed at its side end. The upper chord 31, the first lower chord 35, the second lower chord 36 and the diagonal web 33 are connected by resistance spot welding to form a truss. The truss pole 3 and the concrete base slab 1 are connected by steel reinforcement anchoring to form an integral load-bearing plate that can be assembled without disassembly.

[0026] The non-removable load-bearing slabs can be produced by machinery, which is conducive to uniform spacing of steel bars and consistent thickness of concrete protective layer, thus improving the construction quality of the floor slabs. The prefabricated truss rods can reduce the amount of on-site steel bar binding work, speed up the construction progress, and increase the construction safety guarantee.

[0027] Each diagonal brace 33 has a connecting bar 34 fixedly installed on its inner sidewall. Each connecting bar 34 and the supporting upright 32 are fixedly installed with an interlacing bar 37. Multiple supporting uprights 32 are also fixed between the top chord bar 31 and the concrete base slab 1 to provide auxiliary support for the top chord bar 31. At the same time, connecting bars 34 and interlacing bars 37 are set between the supporting uprights 32 and the diagonal braces 33 to form a triangular support, which can improve the stability of the truss bar 3 structure, so that the force on the truss bar 3 can be better distributed and the stability of the support can be guaranteed.

[0028] To address the problems existing in the prior art, this utility model provides a non-removable integrated shear-resistant steel truss concrete floor slab. This device achieves a non-removable integrated combination by setting truss rods 3 and concrete base plate 1 together, reducing the amount of on-site steel reinforcement binding work, speeding up the construction progress, increasing construction safety, and avoiding the uneven quality of steel reinforcement binding caused by manual binding, thus ensuring the load-bearing effect of the floor slab construction.

[0029] Concrete base slab 1: As the foundation component of the floor deck, it provides an installation platform for the truss mechanism and is connected to the truss rod 3 by steel reinforcement to form an integral load-bearing slab that can be dismantled without dismantling.

[0030] Shear support 2: It is fixedly installed at the upper end of the concrete base slab 1 and can effectively enhance the shear resistance of the interface between the old and new concrete between the concrete base slab 1 and the post-cast concrete layer.

[0031] Truss member 3: It is formed by resistance spot welding of the top chord bar 31, the first bottom chord bar 35, the second bottom chord bar 36 and the diagonal web bar 33. It is fixedly installed on the concrete base plate 1 at equal intervals, forming an integral and non-removable assembly with the concrete base plate 1.

[0032] Top chord reinforcement 31: It is a component of truss member 3 and works in conjunction with diagonal web reinforcement 33 to enhance the shear resistance between the concrete base slab 1 and the post-cast concrete layer.

[0033] Support poles 32: installed between the upper chord reinforcement 31 and the concrete base slab 1, with a minimum of two, to assist in supporting the upper chord reinforcement 31, and to cooperate with the connecting reinforcement 34 and the through reinforcement 37.

[0034] Diagonal web reinforcement 33: It is symmetrically distributed on both sides of the upper chord reinforcement 31, and works with the upper chord reinforcement 31 to improve the shear resistance of the interface between the old and new concrete. Its side ends are respectively connected to the first lower chord reinforcement 35 and the second lower chord reinforcement 36.

[0035] Connecting rib 34: It is fixedly installed on the inner wall of the diagonal web rib 33 and connected to the support upright 32 through the through rib 37. It participates in forming a triangular support structure, which helps to improve the stability of the truss rod 3 and allows the force to be better distributed in the truss rod 3.

[0036] First lower chord 35: Fixed to the side end of the diagonal web 33, and together with the upper chord 31, the diagonal web 33 and the second lower chord 36, it forms the truss rod 3 by resistance spot welding.

[0037] The second lower chord 36 is fixed to the side end of the diagonal web 33 and, together with the upper chord 31, the diagonal web 33 and the first lower chord 35, forms the truss rod 3 by resistance spot welding.

[0038] Interlacing rib 37: Connects the connecting rib 34 and the supporting upright 32, and together they form a triangular support structure, enhancing the stability of the truss rod 3 and enabling the truss rod 3 to more effectively distribute the force when bearing load.

[0039] Working principle:

[0040] The truss, consisting of the upper chord reinforcement 31, the first lower chord reinforcement 35, the second lower chord reinforcement 36, and the diagonal web reinforcement 33, is formed by resistance spot welding. This creates the truss rod 3, which is then connected to the concrete base slab 1 via steel reinforcement anchoring to form an integral assembly. This assembly creates a non-removable, integrated load-bearing slab. The non-removable load-bearing slab allows for mechanized production, ensuring uniform steel reinforcement spacing and consistent concrete cover thickness, thus improving the construction quality of the floor slab. The prefabricated truss rod 3 reduces on-site steel reinforcement binding work, accelerates construction progress, and increases construction safety. This device incorporates diagonal web reinforcement 33 and top chord reinforcement 31, along with shear supports 2 anchored in the concrete base slab 1. This enhances the shear resistance of the interface between the old and new concrete layers. Multiple support columns 32 are fixed between the top chord reinforcement 31 and the concrete base slab 1 to provide auxiliary support for the top chord reinforcement 31. Connecting bars 34 and through bars 37 are also incorporated between the support columns 32 and the diagonal web reinforcement 33, forming a triangular support structure that improves the stability of the truss member 3 structure. Qualitative design allows for better distribution of forces on truss member 3, ensuring the stability of the support. In existing load-bearing slab construction, rebar tying is cumbersome, requiring significant manpower and time. Human factors lead to inconsistent rebar tying quality, affecting the construction quality of the floor slab. Furthermore, poor shear resistance at the interface can cause relative slippage or cracking between the old and new concrete layers under heavy loads or vibrations, affecting the integrity and load-bearing capacity of the floor slab. This device addresses this by using truss member 3 in conjunction with the concrete base slab 1. This device achieves integrated, non-disassembly assembly, reducing on-site rebar tying work, accelerating construction progress, increasing construction safety, and avoiding inconsistent rebar tying quality caused by manual binding. It ensures the load-bearing capacity of the floor slab. Furthermore, by setting up the upper chord reinforcement 31, support poles 32, diagonal web reinforcement 33, connecting reinforcement 34, and through reinforcement 37, this device can provide better support for the stability of the truss rod 3, thereby better dispersing the force on the truss rod 3, ensuring the stability of the support, and improving the shear resistance of this device.

[0041] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A non-removable integrated shear-resistant steel truss concrete floor slab, comprising a concrete base slab (1), characterized in that, The concrete base plate (1) is provided with a truss mechanism to facilitate shear support; The truss structure includes shear supports (2) and truss rods (3). There are multiple truss rods (3), and each truss rod (3) is fixedly installed at equal intervals on the upper end of the concrete base plate (1). There are multiple shear supports (2), and each shear support (2) is fixedly installed on the upper end of the concrete base plate (1). Each truss rod (3) is equipped with an upper chord bar (31) and diagonal web bars (33). Each diagonal web bar (33) is connected by a bend, and the bend is arc-shaped. The same second lower chord bar (36) is also fixedly installed at the bend of each diagonal web bar (33). The angle between the bend and the second lower chord bars (36) on both sides of the horizontal plane is 0 to 90 degrees.

2. The integrated shear-resistant reinforced concrete floor slab without dismantling as described in claim 1, characterized in that: Each of the aforementioned oblique web reinforcements (33) is distributed on both sides of the upper chord reinforcement (31) with the upper chord reinforcement (31) as the axis of symmetry.

3. The integrated shear-resistant reinforced concrete floor slab without dismantling as described in claim 2, characterized in that: At least two support poles (32) are fixedly installed between each of the top chord reinforcement bars (31) and the concrete base plate (1).

4. The integrated shear-resistant reinforced concrete floor slab without dismantling as described in claim 3, characterized in that: Each of the oblique web reinforcements (33) has a first lower chord reinforcement (35) fixedly installed at its side end.

5. The non-removable integrated shear-resistant reinforced concrete floor slab as described in claim 4, characterized in that: Each of the oblique web reinforcements (33) has a connecting reinforcement (34) fixedly installed on its inner sidewall.

6. The non-removable integrated shear-resistant reinforced concrete floor slab as described in claim 5, characterized in that: An interlocking rib (37) is fixedly installed between each of the connecting ribs (34) and the supporting uprights (32).

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