Stirrup rib for supporting reinforcing steel bar

Abstract

The stirrup rib is shaped like a Chinese character'downwards' and is formed by welding an upper reinforcing steel bar, a middle supporting reinforcing steel bar and a lower reinforcing steel bar, the upper reinforcing steel bar is composed of a transverse short reinforcing steel bar A, the middle supporting reinforcing steel bar is composed of a vertical reinforcing steel bar and an inclined reinforcing steel bar, and the lower reinforcing steel bar is composed of a transverse short reinforcing steel bar A and a transverse short reinforcing steel bar B; the lower reinforcing steel bar is composed of a longitudinal reinforcing steel bar and a transverse short reinforcing steel bar B. The upper end of the vertical reinforcing steel bar is welded to the middle of the transverse short reinforcing steel bar A. The lower end of the vertical reinforcing steel bar is welded to the longitudinal reinforcing steel bar. The oblique reinforcing steel bar is obliquely welded between the vertical reinforcing steel bar and the longitudinal reinforcing steel bar to form a triangular supporting structure. And the longitudinal reinforcing steel bars are erected on the upper reinforcing steel bar mesh of the lower reinforcing steel bar mesh. Compared with the prior art, the stirrup rib structure shaped like the Chinese character'fang 'is designed, the stirrup rib structure shaped like the Chinese character'fang' not only can achieve the effect of stabilizing the upper reinforcing mesh and the lower reinforcing mesh, but also can save resources, is easy to operate, can meet the requirement for building construction quality, and can achieve economic benefits.

Description

Technical Field

[0001] This utility model relates to the field of building engineering, and in particular to a stirrup bar for supporting steel bars. Background Technology

[0002] In the construction industry, stirrups are an important construction measure in building and municipal engineering. They are mainly used between the upper and lower steel meshes of foundation slabs and cast-in-place slabs to fix and support the upper steel reinforcement. By supporting the upper steel reinforcement, they enable it to withstand various construction loads, prevent the upper steel reinforcement of the foundation slab from twisting and sagging, and protect the lower steel reinforcement from exposure.

[0003] Currently, almost all construction projects use Z-shaped stirrups, mainly because they are the most common type. Most steelworkers are skilled in using Z-shaped stirrups. A Z-shaped stirrup is made by bending a long steel bar into a Z shape. The lower support of the stirrup is fixed to the lower steel bar by tying it, and a support bar is tied to the upper part of the stirrup. The upper steel mesh is placed on the support bar to support the upper and lower steel mesh.

[0004] The existing Z-shaped stirrup reinforcement has the following disadvantages:

[0005] 1. Since the Z-shaped stirrup is made by bending a long steel bar into a Z shape, only longer steel bars can be selected and cut to the required length before bending during the preparation of the Z-shaped stirrup. This results in a large amount of scrap steel bars, which are too short to be reused, thus wasting material resources.

[0006] 2. When construction workers use the upper layer of reinforcing steel on the support slab, they mostly use stirrups made on-site. The bending process is mostly done manually by steelworkers on-site according to the requirements. During the bending process, human error can easily cause the overall height of the stirrups to be inconsistent, resulting in an unstable and uneven laying of the upper steel mesh. Therefore, experienced steelworkers are needed to bend them uniformly. When the project volume is large, a single steelworker cannot complete the work. It is necessary to adopt a large-scale customized procurement method, with a third party using machinery to bend different specifications according to the design parameters. This not only results in high procurement costs and large material waste, but also has issues with immediacy and flexibility.

[0007] 3. Furthermore, the Z-shaped stirrups are fixed to the upper and lower reinforcing bars by tying them together, which limits their stability. During concrete pouring, human trampling may damage the stability of the Z-shaped stirrups, compromising the building's safety.

[0008] Therefore, there is an urgent need to design a new stirrup bar structure to solve the above problems. It should be noted that the design of the stirrup bar not only needs to meet the construction strength requirements, but also must comply with the principle of being sufficient and appropriate, enabling the stirrup bar structure to meet the construction requirements and save resources, so that it is suitable for popularization and promotion. Summary of the Invention

[0009] The utility model provides a stirrup bar for supporting steel bars that solves the above problems.

[0010] In order to achieve the above object, the technical solution adopted by the utility model is: a stirrup bar for supporting steel bars, the stirrup bar is in a lower shape and is welded by an upper steel bar, a middle supporting steel bar and a lower steel bar. The upper steel bar is composed of a transverse short steel bar A, the middle supporting steel bar is composed of a vertical steel bar and an inclined steel bar, the lower steel bar is composed of a longitudinal steel bar and a transverse short steel bar B. The upper end of the vertical steel bar is welded to the middle part of the transverse short steel bar A, and its lower end is welded to the longitudinal steel bar. The inclined steel bar is obliquely welded between the vertical steel bar and the longitudinal steel bar to form a triangular support structure. The longitudinal steel bar is arranged on the upper layer steel mesh of the lower steel bar mesh, and the transverse short steel bar B is welded to the bottom of the longitudinal steel bar.

[0011] Preferably, the length of the longitudinal steel bar is greater than the grid gap of the lower steel bar mesh and is arranged between two groups of parallel steel bars on the upper layer of the lower steel bar mesh.

[0012] Preferably, both ends of the longitudinal steel bar are welded or tied to the lower steel bar mesh for fixation.

[0013] Preferably, the lower end of the inclined steel bar is welded to the front end of the longitudinal steel bar, and the other end is welded to the middle upper part of the vertical steel bar.

[0014] Preferably, the transverse short steel bar B has the same diameter as the steel bars of the lower steel bar mesh.

[0015] Preferably, the transverse short steel bar A and the transverse short steel bar B are 200 mm long, the vertical steel bar is 900 mm long, the inclined steel bar is 636 mm long, and the longitudinal steel bar is 600 mm long.

[0016] Preferably, the transverse short steel bar A and the transverse short steel bar B are 200 mm long, the vertical steel bar is 500 mm long, the inclined steel bar is 355 mm long, and the longitudinal steel bar is 400 mm long.

[0017] Compared with the prior art, the advantages of the utility model are as follows: The utility model designs a stirrup bar structure in a lower shape. This lower-shaped stirrup bar can not only meet the function of stabilizing the upper and lower steel bar meshes, but also save resources, and is simple to operate, which can not only meet the construction quality requirements of buildings, but also achieve economic benefits. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural view of a utility model stirrup bar;

[0019] Figure 2 It is an assembly schematic view of the utility model stirrup bar during the construction process.

[0020] In the figure: 1. Transverse short bar A; 2. Vertical bar; 3. Longitudinal bar; 4. Diagonal bar; 5. Transverse short bar B; 6. Upper steel bar mesh; 7. Lower steel bar mesh. Specific embodiments

[0021] The present utility model will be further described below.

[0022] Example: A stirrup bar for supporting steel bars, see Figure 1 and Figure 2 , the stirrup bar is in an inverted "U" shape, welded by an upper steel bar, a middle support steel bar and a lower steel bar. The upper steel bar consists of a transverse short bar A1, the middle support steel bar consists of a vertical bar 2 and a diagonal bar 4, and the lower steel bar consists of a longitudinal bar 3 and a transverse short bar B5.

[0023] Compared with the original "Z" - shaped stirrup bar, for the inverted "U" - shaped stirrup bar of the present utility model, the original "Z" - shaped stirrup bar requires a whole section of steel bar with a fixed length to be bent, which needs to be completed by cutting and mechanical processing. This will make a part of each steel bar unused and become waste steel bars. However, the inverted "U" - shaped stirrup bar of the present utility model is welded by multiple sections of steel bars, which can comprehensively utilize the short steel bar scraps on - site. The available waste steel bar materials almost cover all the waste steel bar materials on - site. This greatly improves the utilization rate of steel bar materials, can achieve certain economic benefits, and conforms to the concept of green building.

[0024] Except that the length of the vertical bar 2 is fixed, the lengths of the steel bars in other parts have little influence. It can realize the secondary utilization of waste steel bars. Even for the vertical bar 2, two steel bars are welded in a staggered manner to form the required fixed length. Therefore, the inverted "U" - shaped stirrup bar uses waste steel bars for spot welding connection. The operation is simple, does not require large - scale mechanical processing, only needs welders to carry out spot welding to fix, saves the cost of large - scale mechanical processing, and at the same time, the operation is simple, reduces the construction and production difficulty of workers, improves work efficiency, does not require experienced steel bar workers to bend, and the consistency of the stirrup bar is good. While the "Z" - shaped stirrup bar needs cutting and mechanical processing.

[0025] In terms of structural stability, compared with the U-shaped stirrup reinforcement, the present invention features a transverse short steel bar A1 welded transversely to the bottom steel mesh of the upper steel mesh 6. The transverse short steel bar A1 serves as a fixed connection between the lower U-shaped stirrup reinforcement and the upper steel mesh 6. The upper end of the vertical steel bar 2 is welded to the middle of the transverse short steel bar A1, and its lower end is welded to the longitudinal steel bar 3. The oblique steel bar 4 is welded obliquely between the vertical steel bar 2 and the longitudinal steel bar 3 to form a triangular support structure. The vertical steel bar 2 provides vertical support force to support the upper steel bar, and the triangular support structure formed by the oblique steel bar 4 further enhances its stability. To further improve the support stability of the vertical reinforcing bars 2, the longitudinal reinforcing bars 3 are erected on the upper layer of the lower reinforcing mesh 7. The longitudinal reinforcing bars 3 serve as the lower support for the U-shaped stirrups and distribute the load-bearing capacity of the vertical reinforcing bars 2 to the upper layer of the lower reinforcing mesh 7, thus further improving the overall support stability of the U-shaped stirrups. The transverse short reinforcing bars B5 are welded to the bottom of the longitudinal reinforcing bars 3 and spot-welded to the bottom layer of the lower reinforcing mesh 7. The transverse short reinforcing bars B5 are used for the fixed connection between the U-shaped stirrups and the lower reinforcing mesh 7, also serving a supporting connection function and improving its support stability. However, the bent portion of the U-shaped stirrups is prone to deformation under high pressure after bending, which is one of its drawbacks in terms of support stability.

[0026] Furthermore, the Z-shaped stirrups are fixed in the middle of the seven upper and lower steel meshes by binding, which does not effectively guarantee stability. In contrast, the lower Z-shaped stirrups of this utility model are fixed by spot welding, which effectively guarantees stability and can effectively prevent the meshes from shifting due to human trampling during concrete pouring.

[0027] The length of the longitudinal steel bar 3 is greater than the mesh gap of the lower steel mesh 7, and it is erected between the two sets of parallel steel bars on the upper layer of the lower steel mesh 7. The longitudinal steel bar 3 is erected in an erected manner to better distribute the load borne by the vertical steel bar 2 on the upper layer of the lower steel mesh 7, and provides bottom support through the transverse short steel bar B5, thereby improving the vertical bearing capacity of the longitudinal steel bar 3 and preventing it from deforming.

[0028] The longitudinal reinforcing bars 3 can be directly erected without welding, ensuring the support strength of the U-shaped stirrups. During installation, only the transverse short reinforcing bars A1 and B5 need to be spot-welded, making the installation of the U-shaped stirrups very convenient and quick. To improve the installation stability of the U-shaped stirrups, the two ends of the longitudinal reinforcing bars 3 can also be welded or tied to the lower reinforcing mesh 7 to enhance the support stability at the bottom.

[0029] The inclined steel bar 4 is welded and fixed at its lower end to the front end of the longitudinal steel bar 3, and the other end is welded and fixed to the upper part of the vertical steel bar 2. Welding to the upper part of the vertical steel bar 2 can better provide support and stability for the vertical steel bar 2 and avoid deformation of the vertical steel bar 2 under pressure.

[0030] The transverse short steel bar B5 has the same diameter as the steel bar of the lower steel mesh 7, which can provide bottom support for the erection of the longitudinal steel bar 3, and at the same time transfer the stress of the stirrup to the bottom steel mesh of the lower steel mesh 7.

[0031] As a preferred embodiment, this utility model, through design calculations, for construction of a raft foundation with a thickness of 1m, specifies that the stirrup bars in the lower-shaped shape have transverse short bars A1 and B5 with a length of 200mm, vertical bar 2 with a length of 900mm, diagonal bar 4 with a length of 636mm, and longitudinal bar 3 with a length of 600mm.

[0032] As a preferred embodiment, for the construction of a raft foundation with a thickness of 0.6m, the stirrups of the U-shape are as follows: the transverse short steel bars A1 and B5 are 200mm long, the vertical steel bar 2 is 500mm long, the diagonal steel bar 4 is 355mm long, and the longitudinal steel bar is 3400mm long.

[0033] A method for constructing and using stirrups to support reinforcing bars, wherein the stirrups described above are employed.

[0034] Step A: Collect scrap steel bars on site and classify them according to the required lengths of the upper steel bars, middle supporting steel bars, and lower steel bars;

[0035] Step B: Weld the upper reinforcing bars, middle supporting reinforcing bars and lower reinforcing bars into a U-shaped stirrup bar by spot welding;

[0036] Step C: First, lay the lower steel mesh 7. Place the U-shaped stirrups according to the actual design requirements, and spot weld the horizontal short steel bars B5 of the stirrups to the bottom layer of the lower steel mesh 7.

[0037] Step D: Finally, lay the upper steel mesh 6 and weld the horizontal short steel bars A1 of the stirrups to the bottom steel mesh of the upper steel mesh 6 to realize the installation support frame of the upper steel mesh 6.

[0038] During its construction and use, the U-shaped stirrup not only serves to stabilize the seven upper and lower steel meshes, but also saves resources and realizes the secondary use of scrap steel. Moreover, its installation and operation are simple, which can meet the quality requirements of building construction and achieve economic benefits.

[0039] The above provides a detailed description of a stirrup for supporting reinforcing bars provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, based on the idea of ​​this utility model, there will be changes in the specific implementation and application scope. Changes and improvements to this utility model are possible without exceeding the concept and scope specified in the appended claims. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A stirrup for supporting a steel bar, characterised in that: The stirrup is in the shape of a lower letter, which is welded by an upper steel bar, a middle supporting steel bar and a lower steel bar, the upper steel bar is composed of a horizontal short steel bar A, the middle supporting steel bar is composed of a vertical steel bar and an inclined steel bar, the lower steel bar is composed of a longitudinal steel bar and a horizontal short steel bar B, the upper end of the vertical steel bar is welded in the middle of the horizontal short steel bar A, the lower end of the vertical steel bar is welded on the longitudinal steel bar, the inclined steel bar is inclinedly welded between the vertical steel bar and the longitudinal steel bar to form a triangular supporting structure, the longitudinal steel bar is arranged on the upper layer of the lower steel bar net, and the horizontal short steel bar B is welded at the bottom of the longitudinal steel bar.

2. A stirrup for supporting a steel bar according to claim 1, wherein: The length of the longitudinal steel bar is greater than the grid gap of the lower steel bar net, and the longitudinal steel bar is arranged between two groups of parallel steel bars of the upper layer of the lower steel bar net.

3. A stirrup for supporting a steel bar according to claim 2, wherein: The longitudinal steel bar is welded or bound to the lower steel bar net at both ends.

4. A stirrup for supporting a steel bar according to claim 1, wherein: The inclined steel bar is welded at the front end of the longitudinal steel bar at the lower end and is welded at the middle upper part of the vertical steel bar at the other end.

5. A stirrup for supporting a steel bar according to claim 1, wherein: The horizontal short steel bar B has the same diameter as the steel bar of the lower steel bar net.

6. A stirrup for supporting a steel bar according to claim 1, wherein: The horizontal short steel bar A and the horizontal short steel bar B are 200mm long, the vertical steel bar is 900mm long, the inclined steel bar is 636mm long, and the longitudinal steel bar is 600mm long.

7. A stirrup for supporting a steel bar according to claim 1, wherein: The horizontal short steel bar A and the horizontal short steel bar B are 200mm long, the vertical steel bar is 500mm long, the inclined steel bar is 355mm long, and the longitudinal steel bar is 400mm long.

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