Stirrup rib for supporting reinforcing steel bars and construction and use method of stirrup rib

Abstract

The stirrup rib is in a lower shape 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' can achieve the effect of stabilizing the upper reinforcing mesh and the lower reinforcing mesh, resources can be saved, operation is easy, the building construction quality requirement can be met, and economic benefits can be achieved.

Description

Technical Field

[0001] The invention relates to the field of construction engineering, and in particular to a stirrup bar for supporting steel bars and a construction and use method thereof. Background Art

[0002] In the construction industry, stirrups are an important construction measure in construction and municipal engineering. They are mainly used between the upper and lower steel mesh of the foundation slab and the cast-in-place slab to fix and support the upper steel bars. By supporting the upper steel bars, it can withstand various construction loads, prevent the upper steel bars of the slab from twisting and sinking, and protect the lower steel bars to prevent the occurrence of exposed steel bars.

[0003] At present, almost all construction projects use the "J" shaped stirrup reinforcement, mainly because the "J" shaped stirrup reinforcement is the most popular. At present, the technology mastered by most steel workers is mainly based on the "J" shaped stirrup reinforcement. The "J" shaped stirrup reinforcement is made by directly bending a long steel bar into an "J" shape. The lower leg of the stirrup reinforcement is fixed to the lower steel bar by binding, and the frame reinforcement is tied on the upper part of the stirrup reinforcement. The upper steel mesh is placed on the frame reinforcement to achieve the purpose of supporting the upper and lower steel meshes.

[0004] The existing "J"-shaped stirrup has the following disadvantages:

[0005] 1. Since the "J"-shaped stirrup reinforcement is made of a long steel bar bent into an "J" shape, in the process of preparing the "J"-shaped stirrup reinforcement, only longer steel bars can be cut into the required length and then bent, which will produce a large amount of scrap steel bars, and the scrap steel bars produced are short and cannot be reused, which is a great waste of material resources.

[0006] 2. When construction workers use the upper layer of steel bars on the support plate, most of them use the "J" shaped stirrup bars made on site. The bending process is mostly done manually by the steel bar master on site according to the needs. It is easy to cause the overall height of the stirrup to be inconsistent due to manual errors during the bending process, resulting in unstable laying of the upper steel mesh and poor stability. Therefore, experienced steel bar masters are required to perform unified bending. When the project volume is large, a single steel bar master cannot complete it, and can only adopt large-scale customized procurement according to needs. The third party uses the design parameters and machines to bend different specifications. Not only is the procurement cost high, but the material loss is large, and there are also problems with immediacy and flexibility.

[0007] 3. Moreover, the upper and lower parts of the "J"-shaped stirrups are fixed in the middle of the upper and lower steel bars by binding, which makes the stability of the "J"-shaped stirrups limited. When pouring concrete, the stability of the "J"-shaped stirrups may be damaged due to manual trampling, resulting in the inability to ensure the safety of the building.

[0008] Therefore, it is urgent to design a new stirrup reinforcement structure to solve the above problems. It should be noted that the design of the stirrup reinforcement must not only meet the construction strength requirements, but also must comply with the principle of sufficiency and moderation, so that the stirrup reinforcement structure can meet the construction requirements and save resources, so that it is suitable for popularization and promotion. Summary of the invention

[0009] The invention provides a stirrup bar for supporting steel bars and a construction and use method thereof which solves the above-mentioned problem.

[0010] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a stirrup bar for supporting steel bars, the stirrup bar is in a downward 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 short transverse steel bar A, the middle supporting steel bar is composed of a vertical steel bar and a diagonal steel bar, the lower steel bar is composed of a longitudinal steel bar and a short transverse steel bar B, the upper end of the vertical steel bar is welded to the middle of the short transverse steel bar A, and the lower end thereof is welded to the longitudinal steel bar, the diagonal 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 erected on the upper steel bar mesh of the lower steel bar mesh, and the short transverse steel bar B is welded to the bottom of the longitudinal steel bar.

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

[0012] Preferably, both ends of the longitudinal steel bars are fixed to the lower steel mesh by welding or binding.

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

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

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

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

[0017] A construction and use method of a stirrup bar for supporting steel bars, using the stirrup bar according to claim 1, characterized in that:

[0018] Step A, collecting the scrap steel bars on site, and classifying the scrap steel bars according to the required lengths of upper steel bars, middle support steel bars and lower steel bars;

[0019] Step B, welding the upper steel bar, the middle support steel bar and the lower steel bar into a stirrup bar in the shape of a downward letter "U" by spot welding;

[0020] Step C: first lay the lower steel mesh, place the stirrup reinforcement in the shape of a U-shaped stirrup according to the actual design requirements, and weld the transverse short steel bar B of the stirrup reinforcement to the bottom steel bar of the lower steel mesh;

[0021] Step D: Finally, lay the upper steel mesh, and weld the transverse short steel bars A of the stirrup bars transversely to the bottom steel mesh of the upper steel mesh to realize the installation support frame of the upper steel mesh.

[0022] Compared with the prior art, the advantages of the present invention are: the present invention designs a U-shaped stirrup reinforcement structure, which can not only stabilize the upper and lower steel meshes, but also save resources and is easy to operate, which can not only meet the quality requirements of building construction, but also achieve economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of the invented stirrup;

[0024] Figure 2 The invention is a schematic diagram of the assembly of stirrup bars during the construction process.

[0025] In the figure: 1. Transverse short steel bars A; 2. Vertical steel bars; 3. Longitudinal steel bars; 4. Diagonal steel bars; 5. Transverse short steel bars B; 6. Upper steel mesh; 7. Lower steel mesh. DETAILED DESCRIPTION

[0026] The present invention will be further described below.

[0027] Embodiment: A stirrup bar for supporting a steel bar, see Figure 1 and Figure 2 The stirrup reinforcement is in the shape of a downward Chinese character 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 short transverse steel bar A1, the middle supporting steel bar is composed of a vertical steel bar 2 and a diagonal steel bar 4, and the lower steel bar is composed of a longitudinal steel bar 3 and a short transverse steel bar B5.

[0028] Compared with the original "X"-shaped stirrup reinforcement, the "X"-shaped stirrup reinforcement structure of the present invention requires a whole section of steel bars of fixed length to be bent, which needs to be cut and machined, which will result in a portion of each steel bar being left unused and becoming waste steel bars. The "X"-shaped stirrup reinforcement of the present invention is welded from multiple sections of steel bars, which can comprehensively utilize short steel bar waste on site. The available waste steel bar materials almost cover all waste steel bar materials on site, which greatly improves the utilization rate of steel bar materials, achieves certain economic benefits, and conforms to the concept of green building.

[0029] Wherein, except the fixed length of vertical reinforcement 2, the length of reinforcement at other parts has little influence, and the secondary utilization of waste reinforcement can be realized, even if vertical reinforcement 2 also adopts the mode of two steel dislocation welding, welded into required fixed length. Therefore, the lower Chinese character stirrup bar adopts steel bar waste to carry out spot welding connection, which is easy to operate, does not need large-scale mechanical processing, only needs welder to carry out spot welding to fix, saves large-scale mechanical processing cost, is easy to operate at the same time, reduces the difficulty of construction and production of workers, improves work efficiency, does not need experienced reinforcement master to bend, and the consistency of stirrup bar is good. And the Chinese character stirrup bar needs to be cut and machined.

[0030] In terms of structural stability, compared with the "X"-shaped stirrup reinforcement, the transverse short steel bar A1 of the present invention is transversely welded to the bottom steel mesh of the upper steel mesh 6, and the transverse short steel bar A1 is used to fix the "X"-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 the lower end thereof is welded to the longitudinal steel bar 3. The oblique steel bar 4 is obliquely welded between the vertical steel bar 2 and the longitudinal steel bar 3 to form a triangular support structure, and the vertical steel bar 2 provides a vertical support force for supporting the upper steel bar, and the oblique steel bar 4 is used to form a triangular support structure to further Improve the support stability of the vertical steel bar 2, the longitudinal steel bar 3 is set on the upper steel bar mesh of the lower steel mesh 7, and the longitudinal steel bar 3 is used as the lower support of the U-shaped stirrup bar, and the bearing capacity of the vertical steel bar 2 can be dispersed to the upper steel bar mesh of the lower steel mesh 7, which can further improve the support stability of the entire U-shaped stirrup bar, the transverse short steel bar B5 is welded to the bottom of the longitudinal steel bar 3, and spot welded to the bottom steel bar of the lower steel mesh 7, and the transverse short steel bar B5 is used for the fixed connection between the U-shaped stirrup bar and the lower steel mesh 7, which also plays a supporting and connecting role, and improves its support stability. However, after the U-shaped stirrup bar is bent and subjected to high pressure, the bending part is easily deformed, and its support stability is one of its shortcomings.

[0031] Moreover, the "X"-shaped stirrup reinforcement is fixed between the 7 upper and lower steel meshes by binding, and the stability cannot be effectively guaranteed. However, the "X"-shaped stirrup reinforcement of the present invention is fixed by spot welding, and the stability is effectively guaranteed. When pouring concrete, the displacement of the mesh caused by manual trampling can be effectively avoided.

[0032] The length of the longitudinal steel bar 3 is greater than the grid gap of the lower steel mesh 7, and is installed between two groups of parallel steel bars on the upper layer of the lower steel mesh 7. The longitudinal steel bar 3 is installed in a manner to better disperse the load borne by the vertical steel bar 2 on the upper steel bars of the lower steel mesh 7, and provide bottom support through the short transverse steel bar B5, thereby improving the bearing capacity of the longitudinal steel bar 3 in the vertical direction and preventing it from deforming.

[0033] The longitudinal reinforcement 3 can be directly installed without welding and fixing, which can also ensure the support strength of the U-shaped stirrup reinforcement. During installation, only the transverse short reinforcement A1 and the transverse short reinforcement B5 need to be spot welded, making the installation of the U-shaped stirrup reinforcement very convenient and quick. In order to improve the installation stability of the U-shaped stirrup reinforcement, the two ends of the longitudinal reinforcement 3 can also be welded or tied to the lower reinforcement mesh 7 to improve the support stability of the bottom.

[0034] The inclined lower end of the oblique steel bar 4 is welded and fixed to the front end of the longitudinal steel bar 3, and the other end is welded and fixed to the middle and upper part of the vertical steel bar 2. Welding to the middle and upper part of the vertical steel bar 2 can better provide support stability for the vertical steel bar 2 and avoid compression deformation of the vertical steel bar 2.

[0035] The transverse short steel bars B5 have the same diameter as the steel bars of the lower steel mesh 7 , and can provide bottom support for the installation of the longitudinal steel bars 3 , while transmitting the force of the stirrup bars to the bottom steel mesh of the lower steel mesh 7 .

[0036] As a preferred solution, the present invention designs and calculates that for the construction of a raft slab with a thickness of 1 m, the transverse short steel bars A1 and B5 of the stirrup reinforcement in the shape of a downward U are 200 mm long, the vertical steel bar 2 is 900 mm long, the oblique steel bar 4 is 636 mm long, and the longitudinal steel bar 3 is 600 mm long.

[0037] As a preferred solution, for the construction of raft slab with a thickness of 0.6m, the stirrup reinforcement in the shape of a downward U-shaped steel bar, the transverse short steel bar A1 and the transverse short steel bar B5 are 200mm long, the vertical steel bar 2 is 500mm long, the oblique steel bar 4 is 355mm long, and the longitudinal steel bar is 3400mm.

[0038] A construction and use method of a stirrup bar for supporting steel bars, using the stirrup bar according to claim 1,

[0039] Step A, collecting the scrap steel bars on site, and classifying the scrap steel bars according to the required lengths of upper steel bars, middle support steel bars and lower steel bars;

[0040] Step B, welding the upper steel bar, the middle support steel bar and the lower steel bar into a stirrup bar in the shape of a downward letter "U" by spot welding;

[0041] Step C, first lay the lower steel mesh 7, place the stirrup reinforcement in the shape of a U-shaped stirrup according to the actual design requirements, and point weld the transverse short steel bar B5 of the stirrup reinforcement to the bottom steel bar of the lower steel mesh 7;

[0042] Step D: Finally, lay the upper steel mesh 6, and weld the transverse short steel bars A1 of the stirrup bars transversely to the bottom steel mesh of the upper steel mesh 6 to realize the installation support frame of the upper steel mesh 6.

[0043] During the construction and use of the downward-shaped stirrup reinforcement, it can not only stabilize the 7 pieces of upper and lower steel meshes, but also save resources and realize the secondary utilization of scrap steel. Moreover, its installation and operation are simple, which can not only meet the quality requirements of construction, but also achieve economic benefits.

[0044] The stirrup bars for supporting steel bars and their construction and use methods provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scopes. Changes and improvements to the present invention will be possible without exceeding the concept and scope specified in the appended claims. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A stirrup bar for supporting a steel bar, characterized in that: The stirrup reinforcement is in the shape of a downward Chinese character and is welded from an upper steel bar, a middle supporting steel bar and a lower steel bar. The upper steel bar is composed of a short transverse steel bar A, the middle supporting steel bar is composed of a vertical steel bar and a diagonal steel bar, and the lower steel bar is composed of a longitudinal steel bar and a short transverse steel bar B. The upper end of the vertical steel bar is welded to the middle of the short transverse steel bar A, and the lower end is welded to the longitudinal steel bar. The diagonal 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 erected on the upper steel bar mesh of the lower steel bar mesh, and the short transverse steel bar B is welded to the bottom of the longitudinal steel bar.

2. A stirrup bar for supporting steel bars and a construction and use method thereof according to claim 1, characterized in that: The length of the longitudinal steel bar is greater than the grid gap of the lower steel mesh, and the longitudinal steel bar is arranged between two groups of parallel steel bars in the upper layer of the lower steel mesh.

3. A stirrup bar for supporting steel bars and a construction and use method thereof according to claim 2, characterized in that: The two ends of the longitudinal steel bars are fixed to the lower steel mesh by welding or binding.

4. The stirrup bar for supporting steel bars and the construction and use method thereof according to claim 1, characterized in that: The inclined lower end of the oblique steel bar is welded and fixed to the front end of the longitudinal steel bar, and the other end is welded and fixed to the middle and upper part of the vertical steel bar.

5. The stirrup bar for supporting steel bars and the construction and use method thereof according to claim 1, characterized in that: The transverse short steel bars B have the same diameter as the steel bars of the lower steel mesh.

6. The stirrup bar for supporting steel bars and the construction and use method thereof according to claim 1, characterized in that: The transverse short steel bars A and B are 200 mm long, the vertical steel bars are 900 mm long, the diagonal steel bars are 636 mm long, and the longitudinal steel bars are 600 mm long.

7. The stirrup bar for supporting steel bars and the construction and use method thereof according to claim 1, characterized in that: The transverse short steel bars A and B are 200 mm long, the vertical steel bars are 500 mm long, the diagonal steel bars are 355 mm long, and the longitudinal steel bars are 400 mm long.

8. A construction and use method of a stirrup bar for supporting steel bars, using the stirrup bar according to claim 1, characterized in that: Step A, collecting the scrap steel bars on site, and classifying the scrap steel bars according to the required lengths of upper steel bars, middle support steel bars and lower steel bars; Step B, welding the upper steel bar, the middle support steel bar and the lower steel bar into a stirrup bar in the shape of a downward letter "U" by spot welding; Step C: first lay the lower steel mesh, place the stirrup reinforcement in the shape of a U-shaped stirrup according to the actual design requirements, and weld the transverse short steel bar B of the stirrup reinforcement to the bottom steel bar of the lower steel mesh; Step D: Finally, lay the upper steel mesh, and weld the transverse short steel bars A of the stirrup bars transversely to the bottom steel mesh of the upper steel mesh to realize the installation support and erection of the upper steel mesh.

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