Negative Poisson's ratio cell opening component capable of being installed in combined mode and steel plate shear wall

Abstract

The utility model discloses a negative Poisson's ratio cell perforated component capable of being installed in a combined mode and a steel plate shear wall, and belongs to the technical field of house anti-seismic and damping structures in civil engineering. The negative Poisson's ratio cell element opening component comprises a component body, first energy absorption cell elements and second energy absorption cell elements are densely arranged on the component body, the first energy absorption cell elements and the second energy absorption cell elements are inwards-concave triangular holes penetrating through the component body, and all corners in the inwards-concave triangular holes are in circular arc transition. The steel plate shear wall comprises the negative Poisson's ratio cell perforated components, cross beams and stand columns, a supporting frame is defined by the cross beams and the stand columns, and the negative Poisson's ratio cell perforated components are arranged in the supporting frame. According to the negative Poisson's ratio cell opening component and the steel plate shear wall, through the accurate negative Poisson's ratio cell opening technology, the structure of the negative Poisson's ratio cell opening component and the structure of the steel plate shear wall are effectively improved, the structural arrangement is simple, and energy brought by earthquakes and the like can be better absorbed.

Description

Technical Field

[0001] This utility model relates to a steel plate component and a steel plate shear wall, and more particularly to a negative Poisson's ratio cell perforated component and a steel plate shear wall that can be assembled and installed, belonging to the field of seismic resistance and vibration reduction structure technology in civil engineering. Background Technology

[0002] Shear walls are common seismic-resistant structural components, typically composed of reinforced concrete, used to resist horizontal and dynamic forces generated by earthquakes and strong winds. Incorporating shear walls into buildings significantly improves their seismic resistance and enhances their stability, thus playing a crucial role in construction. Traditional shear wall design primarily relies on their stiffness and strength to resist lateral loads or horizontal actions. In modern architecture, steel plate shear walls are widely used in various building structures due to their excellent lateral resistance, high seismic bearing capacity, and relatively convenient construction.

[0003] Negative Poisson's ratio steel plate shear wall is a novel type of steel plate shear wall structure, primarily constructed from steel plates made of negative Poisson's ratio materials. A key characteristic of negative Poisson's ratio materials is their distinct physical response to external forces, exhibiting a completely different behavior from conventional materials. When subjected to tension, negative Poisson's ratio materials or structures "expand" rather than contract in the direction perpendicular to the tension direction; that is, both the lateral and longitudinal dimensions increase, a behavior completely opposite to that of traditional materials or structures. Compared to positive Poisson's ratio structures, negative Poisson's ratio structures offer superior shear resistance, fracture resistance, energy dissipation performance, and a smoother hysteresis curve. Given the unique mechanical properties and deformation capacity of negative Poisson's ratio materials, they can be used in structural components to effectively absorb and dissipate seismic energy under earthquake loads, reducing the building's dynamic response and improving its seismic performance. Furthermore, negative Poisson's ratio structures possess excellent self-resetting capabilities; that is, after the application and removal of external loads, the structure can return to its original state, thus avoiding permanent residual deformation and improving the building's long-term stability, recoverability, and collapse resistance. Therefore, negative Poisson's ratio steel plate shear walls have significant market potential.

[0004] Negative Poisson's ratio steel plate shear walls are typically composed of negative Poisson's ratio members and edge members. Current examples of negative Poisson's ratio steel plate shear walls, such as the Chinese invention patent application with application number 202311260251.9 and patent title "A Negative Poisson's Ratio Composite Steel Plate Shear Wall," require a multi-layer structure, which is complex and costly. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art and simplify the negative Poisson's ratio shear wall structure, this utility model provides a combinable negative Poisson's ratio cell perforated component and steel plate shear wall.

[0006] The technical solution adopted in this utility model is as follows: A combinable negative Poisson's ratio cell-perforated component is designed. This component includes a component body, on which first and second energy-absorbing cells are densely arranged. Both the first and second energy-absorbing cells are concave triangular holes penetrating the component body, and the corners of the concave triangular holes are rounded. The first and second energy-absorbing cells are arranged in opposite directions. The concave triangular hole structure design endows the component with negative Poisson's ratio characteristics, significantly improving its shear resistance, indentation resistance, and fracture resistance. The reversed cell arrangement further optimizes energy absorption efficiency. The perforation design reduces the component weight, and the rounded transitions reduce stress concentration and extend fatigue life. By adjusting parameters such as cell size and arrangement density, different mechanical performance requirements can be flexibly matched.

[0007] Furthermore, the first and second energy-absorbing cells are arranged in a transverse array along the component body to form a first energy-absorbing row and a second energy-absorbing row, respectively. The first and second energy-absorbing rows are alternately arranged along the longitudinal direction of the component body, and the first and second energy-absorbing cells of adjacent first and second energy-absorbing rows are staggered. This design improves energy absorption capacity while maintaining lightweight characteristics through innovative geometric arrangement.

[0008] The alternating staggered design disperses and transmits impacts simultaneously along both the lateral and longitudinal directions, forming a network of energy transfer paths. This avoids localized failures caused by stress concentration and significantly improves the overall stability of the component. The staggered arrangement forces adjacent cells to deform sequentially, improving energy absorption efficiency and extending the duration of energy absorption. The staggered layout of opposite cells generates an interlocking effect under compression. The lateral array ensures that the negative Poisson's ratio characteristic is uniformly released throughout the entire component, while the longitudinal alternation strengthens the continuity of lateral expansion, enabling the component to withstand impacts from any direction.

[0009] Furthermore, the first energy-absorbing cell is a horizontally placed isosceles triangle with a concave base. The angle formed by the concavity is an obtuse angle, and the vertex of the concave angle is located on the angle bisector of the vertex of the first energy-absorbing cell. This technical solution achieves precise control and stability improvement of mechanical properties by limiting the specific geometric structure or parameters of the energy-absorbing cell. The concave base design of the horizontally placed isosceles triangle, combined with the fact that the vertex of the concave angle is strictly located on the angle bisector, ensures symmetrical deformation on both sides, eliminates the risk of non-uniform deformation, and makes the negative Poisson's ratio effect more stable and predictable. The concave angle is limited to an obtuse angle to avoid sudden changes in local stress caused by acute angles; combined with the rounded transition design, it further disperses the stress peak.

[0010] Furthermore, the component body is a rectangular plate, which can be a solid or hollow structure. The hollow structure increases its thickness without making it too heavy, and energy-absorbing material can be filled within its cavity. By using a solid or hollow rectangular plate design for the component body, flexible adaptation to mechanical properties and application scenarios is achieved. The solid rectangular plate provides a continuous load-bearing matrix, suppressing local buckling caused by cell deformation under impact loads, making it particularly suitable for applications requiring high stiffness, such as load-bearing wall panels in buildings. The hollow rectangular plate can be filled with energy-absorbing materials (foam, honeycomb core, etc.), forming a dual-level protection system of "cell energy absorption layer + core material dissipation layer".

[0011] Furthermore, this design also includes a snap-fit ​​connector and a locking block. The snap-fit ​​connector and locking block are respectively provided on the left and right sides of the component body. The locking block has a locking groove, into which the snap-fit ​​connector can snap into the locking groove. The snap-fit ​​connector and the locking groove are identical T-shaped structures. The component bodies can be assembled in pairs, thereby reducing the size of the component body and facilitating manufacturing, transportation, and disassembly. This technical solution, through the interlocking design of the T-shaped snap-fit ​​connector and the locking groove, achieves rapid assembly and high reliability of component connections. The modular assembly method facilitates the expansion of application scenarios.

[0012] Furthermore, multiple fasteners and locking blocks are respectively provided on the left and right sides of the component body, and the fasteners and locking blocks on both sides are arranged in a one-to-one correspondence. The distance between any two locking blocks is greater than the length of the fastener. When assembling the component bodies in pairs, it is only necessary to offset the length of one fastener to insert the fastener into the distance between any two locking blocks, and then insert it into the slot of the locking block along the distance to complete the assembly.

[0013] This utility model also designs a steel plate shear wall, which includes the aforementioned negative Poisson's ratio cell perforated component, as well as beams and columns. The beams and columns form a support frame, and the negative Poisson's ratio cell perforated component is disposed within the support frame. This technical solution achieves a dual breakthrough in the lateral resistance performance and construction efficiency of the building shear wall system through the coordinated design of the negative Poisson's ratio cell perforated component and the support frame; this design integrates the coupling mechanism of negative Poisson's ratio cell energy dissipation and frame boundary constraints.

[0014] Furthermore, the shear wall also includes pre-installed components and a flat plate. Multiple pre-installed components are respectively installed on the beams and columns. These pre-installed components and the negative Poisson's ratio cell perforated components are connected and fixed via the flat plate. Through the coordinated design of the pre-installed components and the flat plate, high-precision assembly and performance optimization of the negative Poisson's ratio shear wall are achieved. The pre-installed components facilitate the installation of the negative Poisson's ratio cell perforated components and also form a positioning reference. The flat plate provides a flat surface for the connection between the negative Poisson's ratio cell perforated components and the beams and columns (sometimes the ends of pre-installed components on the same beam or column may not be flush), making the connection more reliable.

[0015] Furthermore, densely packed pre-installed components are provided on the crossbeams and columns along their length. The flat plate adopts a right-angle plate and wraps around the pre-installed components from one side, ensuring a stable and reliable connection. It also conceals the pre-installed components to a certain extent, making it more aesthetically pleasing.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) By employing precise negative Poisson's ratio cell opening technology, the structure of negative Poisson's ratio cell opening components and steel plate shear walls is effectively improved. By setting reasonable pre-installed parts and flat plates, and using appropriate welding methods, the overall performance of the structure can be ensured. The components and steel plate shear wall structure of this utility model are simple to design and have low cost. They can better absorb energy from earthquakes, increase in-plane yielding, reduce or to some extent eliminate out-of-plane deformation, and achieve a two-stage energy dissipation process, thereby improving the energy dissipation capacity of the components.

[0018] (2) The cell opening model in the negative Poisson ratio cell opening component is "dart" shaped, that is, a concave triangular cell model with the tip changed to a round arc. When an earthquake occurs, if longitudinal tension occurs, the cell model can effectively form transverse tension, so as to consume more energy while ensuring the stability of the wall and building structure. Correspondingly, when an earthquake occurs, if longitudinal compression occurs, the cell model can effectively form transverse compression, so as to consume more energy while ensuring the stability of the wall and building structure.

[0019] (3) Due to the design of reserved parts on beams and columns, the whole plate connected to the reserved parts by welding, and the connection of the negative Poisson's ratio cell perforated component to the whole plate by welding, the installation process of the negative Poisson's ratio cell perforated component in the frame structure formed by beams and columns is greatly optimized, and the installation effect is also optimized. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0021] Figure 1 This is a schematic diagram of the isometric drawing of the steel plate shear wall of this utility model.

[0022] Figure 2 This is a schematic diagram of the front view of the steel plate shear wall of this utility model.

[0023] Figure 3 This is a schematic diagram of the column (with reserved parts and flat plate) of this utility model.

[0024] Figure 4 This is a schematic diagram of the combined negative Poisson's ratio cell opening component of this utility model.

[0025] Figure 5 This is a schematic diagram of the assembly and installation of the combined negative Poisson's ratio cell opening component of this utility model.

[0026] Figure 6 This is a schematic diagram illustrating the changes in the cell structure of a negative Poisson's ratio perforated component inside a shear wall under external pressure.

[0027] Figure 7 This is a schematic diagram illustrating the changes in the cell structure of a negative Poisson's ratio perforated component inside a shear wall under external tension.

[0028] In the figure: 1. Component body; 2. First energy-absorbing cell; 3. Second energy-absorbing cell; 4. Fastener; 5. Clip; 6. Horizontal beam; 7. Column; 8. Reserved part; 9. Flat plate. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Example 1

[0032] like Figure 1-3As shown, a combinable negative Poisson's ratio cell-perforated component includes a component body 1 (typically a steel plate). First energy-absorbing cells 2 and second energy-absorbing cells 3 are densely arranged on the component body 1, meaning the first energy-absorbing cells 2 and second energy-absorbing cells 3 cover the entire surface of the component body 1. Both the first energy-absorbing cells 2 and second energy-absorbing cells 3 are identical concave triangular holes penetrating the component body 1, and the corners inside the concave triangular holes are rounded. The first energy-absorbing cells 2 and second energy-absorbing cells 3 are arranged in opposite directions.

[0033] More specifically, the first energy-absorbing cell 2 and the second energy-absorbing cell 3 are arranged in a transverse array along the component body 1 to form a first energy-absorbing row and a second energy-absorbing row, respectively. The first energy-absorbing row and the second energy-absorbing row are arranged alternately along the longitudinal direction of the component body 1, and the first energy-absorbing cell 2 and the second energy-absorbing cell 3 of adjacent first energy-absorbing rows and second energy-absorbing rows are staggered.

[0034] Alternatively, it can be described as follows: the first energy-absorbing cell 2 and the second energy-absorbing cell 3 are arranged in a longitudinal array along the component body 1 to form a first energy-absorbing column and a second energy-absorbing column, respectively. The first energy-absorbing column and the second energy-absorbing column are arranged alternately in the transverse direction along the component body 1, and the first energy-absorbing cell 2 and the second energy-absorbing cell 3 of adjacent first energy-absorbing columns and second energy-absorbing columns are staggered.

[0035] More specifically, the first energy-absorbing cell 2 is a horizontally placed isosceles triangle (i.e., the second energy-absorbing cell 3 is also a horizontally placed isosceles triangle, but they are arranged in opposite directions), and its base is concave. The angle formed by the concavity is an obtuse angle, such as 120°, 130°, 140°, 150°, etc., and the vertex of the concave angle is located on the angle bisector of the vertex angle of the first energy-absorbing cell 2. The component body 1 is a rectangular plate, and the rectangular plate is a solid structure or a hollow structure. When it is a hollow structure, a sandwich layer with the same first energy-absorbing cell 2 and second energy-absorbing cell 3 can be provided in its inner cavity.

[0036] Example 2

[0037] This embodiment is a further optimization and refinement of the negative Poisson's ratio cell perforated component based on Embodiment 1.

[0038] The negative Poisson's ratio cell opening component in this embodiment also includes a snap-fit ​​connector 4 and a locking block 5, such as Figure 4-5As shown, the fastener 4 and locking block 5 (usually also steel structure) are welded to the left and right sides of the component body 1, respectively. In this case, the width of the component body 1 is relatively small, facilitating transfer and installation. The locking block 5 has a slot, into which the fastener 4 can be inserted; thus, the negative Poisson's ratio cell perforated components can be assembled in pairs, and the assembled negative Poisson's ratio cell perforated component assembly can be welded and fixed to beams, columns, or other structures using the fastener 4 and locking block 5. The fastener 4 and the slot are identical T-shaped structures.

[0039] One method of setting the fastener 4 and locking block 5 is to weld one or more fasteners 4 and locking blocks 5 to the left and right sides of the component body 1, respectively. The fasteners 4 and locking blocks 5 are at the same height as the component body 1. This structure (not shown in the attached figure) has higher structural strength. Another method of setting the fasteners 4 and locking blocks 5 is to set multiple fasteners 4 and locking blocks 5 on the left and right sides of the component body 1 (the height of the fasteners 4 and locking blocks 5 is much smaller than the height of the component body 1), and the fasteners 4 and locking blocks 5 on both sides are set one-to-one. The distance between each pair of locking blocks 5 is greater than the length of the fastener 4. This structure is easier to assemble.

[0040] Example 3

[0041] This embodiment discloses a steel plate shear wall, which includes the negative Poisson's ratio cell perforated component described in the previous embodiment, and also includes a beam 6 and a column 7. The beam 6 and column 7 form a support frame (generally a rectangular frame), and the negative Poisson's ratio cell perforated component is disposed within the support frame. This embodiment also includes reserved parts 8 and a flat plate 9. Multiple reserved parts 8 are respectively provided on the beam 6 and column 7, and the reserved parts 8 and the negative Poisson's ratio cell perforated component are connected and fixed by the flat plate 9. The reserved parts 8 are densely arranged along the length direction on the beam 6 and column 7, and the flat plate 9 is a right-angled plate that wraps around the reserved parts 8 from one side. The flat plate 9 can be a right-angled plate with the same height or length as the negative Poisson's ratio cell opening component. In this case, only one flat plate 9 needs to be set on the crossbeam 6 and the column 7 respectively. Alternatively, the flat plate 9 can be a right-angled plate with a length much smaller than the height or length of the negative Poisson's ratio cell opening component. In this case, multiple flat plates 9 need to be set on the crossbeam 6 and the column 7 respectively (not shown in the attached figure).

[0042] It should be noted that the beam 6 and column 7 can be steel or concrete structures. When it is a steel plate structure, it is welded to the pre-installed part 8, and then the pre-installed part 8, the flat plate 9, and the negative Poisson's ratio cell opening component are welded and fixed in sequence. When it is a concrete structure, the pre-installed part 8 (or embedded part) is fixed to the reinforcing cage (not shown in the attached drawings, conventional prior art) in the beam 6 or column 7 and extends out of the beam 6 or column 7. Then the pre-installed part 8, the flat plate 9, and the negative Poisson's ratio cell opening component are welded and fixed in sequence. The pre-installed part 8 can be a reinforcing bar or a steel plate, and the flat plate 9 can also be a straight plate or a C-shaped plate.

[0043] For aesthetic purposes, light blocking, and wind protection, decorative panels or other coverings can be installed on both sides of the support frame.

[0044] Working principle

[0045] like Figure 6-7 As shown, due to the presence of the negative Poisson's ratio cell with openings, if longitudinal tension occurs during an earthquake, the energy-absorbing cell can effectively form lateral tension, ensuring the overall steel plate shear wall structure maintains diagonal stability, thereby consuming more energy while ensuring the stability of the wall and building structure. Correspondingly, if longitudinal compression occurs during an earthquake, the energy-absorbing cell can effectively form lateral compression, ensuring the overall steel plate shear wall structure maintains diagonal stability, thereby consuming more energy while ensuring the stability of the wall and building structure.

[0046] Furthermore, in the description of this utility model, unless otherwise stated, the terms "multiple", "multiple roots", and "multiple groups" mean two or more. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer", indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0047] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A combinable negative Poisson's ratio cell opening component, characterized in that: The component includes a main body (1), on which a first energy-absorbing cell (2) and a second energy-absorbing cell (3) are densely arranged. The first energy-absorbing cell (2) and the second energy-absorbing cell (3) are both concave triangular holes that penetrate the main body (1), and each corner inside the concave triangular hole is rounded. The first energy-absorbing cell (2) and the second energy-absorbing cell (3) are arranged in opposite directions.

2. The negative Poisson's ratio cell opening component according to claim 1, characterized in that: The first energy-absorbing cell (2) and the second energy-absorbing cell (3) are arranged in a transverse array along the component body (1) to form the first energy-absorbing row and the second energy-absorbing row respectively. The first energy-absorbing row and the second energy-absorbing row are arranged alternately along the longitudinal direction of the component body (1), and the first energy-absorbing cells (2) and the second energy-absorbing cells (3) of adjacent first energy-absorbing rows and second energy-absorbing rows are staggered.

3. The negative Poisson's ratio cell opening component according to claim 2, characterized in that: The first energy-absorbing cell (2) is an isosceles triangle placed horizontally, with its base concave. The angle formed by the concavity is an obtuse angle, and the vertex of the concave angle is located on the angle bisector of the vertex angle of the first energy-absorbing cell (2).

4. The negative Poisson's ratio cell opening component according to claim 3, characterized in that: The component body (1) is a rectangular plate, and the rectangular plate is a solid structure or a hollow structure.

5. The negative Poisson's ratio cell opening component according to claim 4, characterized in that: It also includes a fastener (4) and a locking block (5). The fastener (4) and the locking block (5) are respectively provided on the left and right sides of the component body (1). The locking block (5) is provided with a locking groove, and the fastener (4) can be inserted into the locking groove. The fastener (4) and the slot are the same T-shaped structure.

6. The negative Poisson's ratio cell opening component according to claim 5, characterized in that: Multiple fasteners (4) and locking blocks (5) are respectively provided on the left and right sides of the component body (1), and the fasteners (4) and locking blocks (5) on both sides are provided in a one-to-one correspondence. The distance between each pair of locking blocks (5) is greater than the length of the fasteners (4).

7. A steel plate shear wall, characterized in that: The negative Poisson's ratio cell opening component according to any one of claims 1-6 further includes a crossbeam (6) and a column (7), the crossbeam (6) and the column (7) forming a support frame, and the negative Poisson's ratio cell opening component is disposed within the support frame.

8. The steel plate shear wall according to claim 7, characterized in that: It also includes reserved parts (8) and a flat plate (9). Multiple reserved parts (8) are respectively provided on the crossbeam (6) and the column (7). The reserved parts (8) and the negative Poisson's ratio cell opening component are connected and fixed by the flat plate (9).

9. The steel plate shear wall according to claim 8, characterized in that: The crossbeam (6) and column (7) are respectively provided with densely packed reserved parts (8) along their length direction, and the flat plate (9) adopts a right-angle plate and wraps around the reserved parts (8) from one side.

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