A multi-cavity concrete shear wall
Patent Information
- Application Number
- CN202522600571.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-08
AI Technical Summary
[0004]本实用新型的目的在于一种多腔体混凝土剪力墙，解决剪力传递效率不足的问题
（1）本实用新型在内部钢结构的每个单元中，在圆形钢筋左右两侧设置了斜向延伸的向上导流钢筋与向下导流钢筋，且都是波段形，在竖向相邻单元中，下方单元的向上导流钢筋延伸末端，正对上方单元的向下导流钢筋延伸末端，这种构造，在墙体内部主动形成了一条与主剪力方向高度一致的连续波浪形传力链，当水平荷载作用时，剪力能够沿着这条路径被逐级传递，避免了传统网格中因路径转折造成的应力集中和材料强度浪费。
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Figure CN224902472U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete shear wall technology, specifically a multi-cavity concrete shear wall. Background Technology
[0002] Multi-cavity concrete shear wall is a type of shear wall structure that is prefabricated in a factory, consists of multiple closed cavities, and is formed by pouring concrete on site. It can significantly improve the lateral stiffness and load-bearing capacity of a building.
[0003] In the current field of building structures, concrete shear walls generally adopt a rectangular grid skeleton formed by orthogonally binding transverse and longitudinal steel bars as the main shear-resistant member. The advantages of this existing technology are its simple construction and intuitive construction. However, there is an angle between the force path of the orthogonal grid and the direction of the main diagonal shear force actually borne by the shear wall, which leads to a detour and inefficient shear force transmission path and is prone to stress concentration at the nodes. At the same time, this arrangement fails to make the steel material play its role most effectively along the direction of the principal tensile stress and principal compressive stress, resulting in the material strength not being fully utilized. Moreover, it may lead to a decrease in the ductility and energy dissipation capacity of the wall under extreme loads. Therefore, there is an urgent need for a new type of shear wall structure that can optimize the internal force flow transmission path and improve the directness and efficiency of shear force transmission. Utility Model Content
[0004] The purpose of this invention is to provide a multi-cavity concrete shear wall that solves the problem of insufficient shear force transmission efficiency.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a multi-cavity concrete shear wall, comprising an internal steel structure and a connecting beam structure. The internal steel structure is formed by vertically splicing at least one unit. Each unit includes a circular reinforcing bar, and obliquely extending upward guiding reinforcing bars and downward guiding reinforcing bars are welded to the left and right sides of the circular reinforcing bars, respectively. The upward and downward guiding reinforcing bars are wave-shaped. In two vertically adjacent units, the extension end of the upward guiding reinforcing bar in the lower unit is directly opposite the extension end of the downward guiding reinforcing bar in the upper unit.
[0006] Furthermore, the four vertices of the circular steel bar are respectively welded with steel bars, the circular steel bars are connected to each other by longitudinal splicing steel bars, and longitudinal steel bars are respectively welded to the front and rear sides of the circular steel bar.
[0007] Furthermore, adjacent longitudinal reinforcing bars are welded together by transverse reinforcing bars, and the upper and lower ends of the longitudinal reinforcing bars are provided with splicing weld points for welding and splicing with the longitudinal reinforcing bars of the adjacent units above and below.
[0008] Furthermore, the connecting beam structure includes longitudinal I-beams, one side of which is welded to the transverse reinforcing bars of the internal steel structure, and the other side is welded to transverse I-beams.
[0009] Furthermore, fork-shaped connecting steel is welded between the transverse I-beams, and the structure of the fork-shaped connecting steel allows triangular reinforced concrete areas to be formed around it after the concrete is poured.
[0010] Furthermore, the shear wall is composed of one or more shear wall splicing units. Each shear wall splicing unit consists of a connecting beam structure and multiple internal steel structure units stacked on it. The shear wall splicing units are connected by welding the ends of the transverse I-beams.
[0011] This utility model has the following beneficial effects: (1) In each unit of the internal steel structure of this utility model, obliquely extending upward guiding bars and downward guiding bars are set on the left and right sides of the circular steel bars, and they are all wave-shaped. In the vertical adjacent units, the extension end of the upward guiding bar of the lower unit is directly opposite the extension end of the downward guiding bar of the upper unit. This structure actively forms a continuous wave-shaped force transmission chain in the wall that is consistent with the height of the main shear force direction. When the horizontal load is applied, the shear force can be transmitted step by step along this path, avoiding stress concentration and material strength waste caused by path turning in the traditional grid.
[0012] (2) The upward and downward guiding steel bars used in this utility model are both wave-shaped. This wave structure itself has plastic deformation capability. Under the action of repeated loads such as earthquakes, these wave steel bars can effectively absorb and dissipate the energy input by earthquakes through their own repeated bending deformation, while delaying the occurrence of stiffness degradation and failure. On the basis of providing the necessary stiffness, it gives the entire wall higher ductility and hysteretic energy dissipation performance, thereby improving the seismic safety reserve of the structure.
[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of a single unit of the internal steel structure of this utility model; Figure 2 This is a schematic diagram of a single unit of the internal steel structure of this utility model; Figure 3 This is a schematic diagram of the shear wall unit structure of this utility model; Figure 4 This is a schematic diagram of the connecting beam structure of this utility model; Figure 5 This is a schematic diagram of the overall structure splicing of the shear wall of this utility model; The attached diagram lists the components represented by each number as follows: In the diagram: 1. Internal steel structure; 101. Circular reinforcing bar; 102. Upward guiding reinforcing bar; 103. Downward guiding reinforcing bar; 104. Spliced reinforcing bar; 105. Longitudinal reinforcing bar; 106. Transverse reinforcing bar; 107. Spliced weld point; 2. Connecting beam structure; 21. Longitudinal I-beam; 22. Transverse I-beam; 23. Fork-shaped connecting steel. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figures 1-5 As shown, this utility model is a multi-cavity concrete shear wall, including an internal steel structure 1 and a connecting beam structure 2. The internal steel structure 1 is formed by vertically splicing at least one unit. The unit includes a circular steel bar 101. The left and right sides of the circular steel bar 101 are respectively welded with obliquely extending upward guiding steel bars 102 and downward guiding steel bars 103. The upward guiding steel bars 102 and downward guiding steel bars 103 are in the shape of waves. In two vertically adjacent units, the extension end of the upward guide bar 102 in the lower unit is directly opposite the extension end of the downward guide bar 103 in the upper unit. The four vertices of the circular steel bar 101 are each welded with a steel bar; The circular steel bars 101 are connected by longitudinal splicing steel bars 104; Longitudinal reinforcing bars 105 are welded to the front and rear sides of the circular reinforcing bar 101, respectively; Adjacent longitudinal reinforcing bars 105 are welded together by transverse reinforcing bars 106; The longitudinal steel bar 105 has splicing weld points 107 at both ends for welding and splicing with the longitudinal steel bars 105 of the adjacent units above and below. Please refer to Figure 1 , Figure 2 As shown, when the shear wall is subjected to a horizontal load, the load is first transferred to the internal steel frame through the concrete. The circular steel bar 101 serves as the core support frame, transmitting the applied force to its surroundings. The obliquely wavy upward guiding steel bar 102 and downward guiding steel bar 103, because their extension direction is consistent with the direction of the main oblique stress, can efficiently convert the shear force into tensile and compressive forces along their axial direction and guide the force flow from this unit to the adjacent unit. The upward guiding steel bar 102 of the lower unit transmits the oblique pressure to its extension end, which is directly opposite the end of the downward guiding steel bar 103 of the upper unit, so that the force flow can be continuously and directly advanced to the upper unit, reducing path turns and stress concentration. At the same time, the peripheral grid formed by welding the longitudinal steel bar 105 and the transverse steel bar 106 constrains and stabilizes the core circular frame and the oblique guiding steel bar, and works together to bear and distribute stress. The force transmission between units is achieved through the welding connection of the longitudinal splicing steel bar 104 and the splicing weld points 107 set at the upper and lower ends of the longitudinal steel bar 105, ensuring the integrity of the vertical splicing and the continuity of force. The connecting beam structure 2 includes a longitudinal I-beam 21, one side of which is welded to the transverse reinforcing bar 106 of the internal steel structure 1, and the other side is welded to a transverse I-beam 22. Forked connecting steel 23 is welded between the transverse I-beams 22. The structure of the forked connecting steel 23 allows triangular reinforced concrete areas to be formed around it after the concrete is poured. The shear wall is composed of one or more shear wall splicing units. Each shear wall splicing unit consists of a connecting beam structure 2 and multiple internal steel structure units stacked on it. The shear wall splicing units are connected by welding the ends of the transverse I-beams 22. Please refer to Figure 3 , Figure 4 , Figure 5 As shown, during assembly, one side of the longitudinal I-beam 21 is firmly welded to the transverse reinforcing bar 106 of the internal steel structure 1, thereby reliably transferring the load of the internal skeleton of the wall to the connecting beam. The transverse I-beam 22 welded to the other side serves as the horizontal connecting arm and boundary skeleton of the shear wall splicing unit. When pouring concrete, the concrete filling between the transverse I-beams 22 and tightly integrated with the forked connecting steel 23 will naturally form a dense triangular concrete reinforcement area on the outside of each limb of the forked connecting steel 23. The geometric stability of the triangle enhances the shear and crack resistance of the node area. During on-site installation, different shear wall splicing units can achieve reliable horizontal extension and overall connection of the wall by aligning and welding the ends of their respective transverse I-beams 22.
[0018] In use, within the factory, circular steel bars 101 serve as the core frame. Additional steel bars and longitudinal steel bars 105 are welded to their four vertices and front and rear sides. Next, obliquely wavy upward-guiding steel bars 102 and downward-guiding steel bars 103 are welded to their upper and lower sides, respectively. Multiple circular steel bars 101 are connected in rows using longitudinal splicing steel bars 104. Adjacent longitudinal steel bars 105 are then welded together using transverse steel bars 106, thus prefabricating a standard unit of the internal steel structure 1. Then, one side of the longitudinal I-beam 21 is welded to the transverse steel bars 106 on the side of the unit, and the other side is welded to transverse I-beam 22. Fork-shaped connecting steel bars 23 are welded between the transverse I-beams 22 to form a connecting beam structure 2. Subsequently, on the construction site, multiple standard units are aligned and welded together using the splicing weld points 107 at the upper and lower ends of their longitudinal steel bars 105, and stacked vertically. Simultaneously, adjacent shear wall splicing units are connected by the transverse I-beam 22. The ends are welded horizontally. Finally, concrete is poured into the assembled steel structure. The concrete encapsulates all the reinforcing bars and structural steel, and multiple triangular reinforcement areas are formed around the fork-shaped connecting steel 23. After the concrete has cured, a complete shear wall structure is formed.
[0019] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A multi-cavity concrete shear wall, comprising an internal steel structure (1) and a connecting beam structure (2), characterized in that: The internal steel structure (1) is formed by vertically splicing at least one unit. The unit includes a circular steel bar (101). The left and right sides of the circular steel bar (101) are respectively welded with obliquely extending upward guiding steel bars (102) and downward guiding steel bars (103). The upward guiding steel bars (102) and downward guiding steel bars (103) are in the shape of waves. In two vertically adjacent units, the extension end of the upward guide bar (102) in the lower unit is directly opposite the extension end of the downward guide bar (103) in the upper unit.
2. A multi-cavity concrete shear wall according to claim 1, characterized in that: The four vertices of the circular steel bar (101) are respectively welded with steel bars; The circular steel bars (101) are connected by longitudinal splicing steel bars (104); The circular steel bar (101) is welded with longitudinal steel bars (105) on both the front and rear sides.
3. A multi-cavity concrete shear wall according to claim 2, characterized in that: The adjacent longitudinal reinforcing bars (105) are welded together by transverse reinforcing bars (106); The longitudinal steel bar (105) has splicing weld points (107) at both the upper and lower ends for welding and splicing with the longitudinal steel bars (105) of the adjacent units above and below.
4. A multi-cavity concrete shear wall according to claim 1, characterized in that: The connecting beam structure (2) includes a longitudinal I-beam (21), one side of which is welded to the transverse reinforcing bar (106) of the internal steel structure (1), and the other side is welded to a transverse I-beam (22).
5. A multi-cavity concrete shear wall according to claim 4, characterized in that: Forked connecting steel (23) is welded between the transverse I-beams (22). The forked connecting steel (23) is constructed such that after the concrete is poured, triangular concrete reinforcement areas can be formed around it.
6. A multi-cavity concrete shear wall according to claim 5, characterized in that: The shear wall is composed of one or more shear wall splicing units. Each shear wall splicing unit consists of a connecting beam structure (2) and multiple internal steel structures (1) stacked on it. The shear wall splicing units are connected by welding the ends of the transverse I-beams (22).