A negative poisson's ratio bidirectional energy dissipation cross type energy dissipation component

Abstract

The application discloses a negative Poisson's ratio bidirectional energy dissipation cross type energy dissipation component, which is characterized by comprising a frame (5) and a connecting piece (6), the frame (5) is a rectangular frame, the connecting piece (6) is arranged at the center position of the frame (5), and a core unit (2) is movably connected between the connecting piece (6) and four corners of the frame (5), respectively. Negative Poisson's ratio holes are arranged in the middle part of the core unit (2) in a circulating manner, and the negative Poisson's ratio holes are at least two columns of positive-negative orthogonal semi-recessed hexagonal holes. Under the action of an earthquake, the whole frame will move laterally, the lateral displacement of the frame is transmitted to four supports arranged along two diagonal lines through axial force, then two supports on one diagonal line will be subjected to axial tension, two supports on the other diagonal line will be subjected to axial pressure, and the energy dissipation section of the core member in the support is provided with the recessed hexagonal negative Poisson's ratio holes arranged in a circulating manner, so that the energy dissipation section will be deformed.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction and energy dissipation in civil engineering structures, specifically to a cross-type energy dissipation component with negative Poisson's ratio bidirectional energy dissipation. Background Technology

[0002] Structural energy dissipation and vibration reduction involves designing certain non-load-bearing components of a structure as energy-dissipating components, or installing energy-dissipating devices at certain locations (nodes or connections) of the structure. Under wind loads or minor earthquakes, these energy-dissipating devices remain in an elastic state, and the structure has sufficient lateral stiffness to meet normal usage requirements. During a strong earthquake, as the stress and deformation of the structure increase, these energy-dissipating devices will be the first to enter an inelastic deformation state, i.e., an energy-dissipating state, generating significant damping, consuming a large amount of seismic energy input into the structure, reducing the structure's seismic response, and protecting the main structure from damage during a strong earthquake.

[0003] The energy contained in moderate or major earthquakes is enormous. Under seismic loading, ordinary energy-dissipating components exhibit poor hysteresis performance and their energy dissipation capacity needs improvement when subjected to large deformations. Furthermore, installation and disassembly after damage are both difficult. Therefore, based on the cross-type energy dissipation component, a cross-type energy dissipation component with a negative Poisson's ratio and bidirectional energy dissipation capability is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the problems of poor hysteresis performance, insufficient energy dissipation capacity, and difficulties in installation and disassembly after damage of ordinary energy dissipation components under large deformation. This invention provides a cross-type energy dissipation component with negative Poisson's ratio bidirectional energy dissipation. It employs a cyclic arrangement of semi-concave hexagonal negative Poisson's ratio holes on the energy dissipation section of the buckling-restrained core component. During earthquakes, the holes deform and dissipate energy, thus improving the energy dissipation capacity of the component.

[0005] The technical solution of the present invention is as follows:

[0006] A cross-type energy dissipation component with negative Poisson's ratio bidirectional energy dissipation includes a frame and connectors. The frame is a rectangular frame, and the connectors are located at the center of the frame. Core units are movably connected between the connectors and the four corners of the frame. The middle part of the core units is provided with a circular arrangement of negative Poisson's ratio holes, which are at least two rows of positive and negative orthogonal semi-concave hexagonal holes.

[0007] Furthermore, the core unit is an I-shaped cross-section low yield point steel, and hinged components are welded to both ends of the core unit.

[0008] Furthermore, the hinge component includes a welded ear-shaped plate and a rectangular steel plate. The ear-shaped plate is provided with pin holes. The ear-shaped plate is connected to the connector or frame by pins. The rectangular steel plate is welded to the core unit.

[0009] Furthermore, the connector is an octagonal steel plate, and the four corners of the connector are provided with gaps for inserting hinge components and pin holes.

[0010] Furthermore, a node plate is provided between the hinge member and the frame. The node plate is embedded in the four corners of the frame. The node plate includes welded angle steel and two triangular steel plates. The triangular steel plates are provided with pin holes.

[0011] Furthermore, a constraint element with a gap between it and the core element is also provided. The constraint element is a rectangular cross-section steel sleeve, and concrete is poured between the constraint element and the core element.

[0012] Furthermore, there is an air gap between the concrete poured between the constraint unit and the core unit and the core unit.

[0013] Furthermore, the frame is a concrete frame.

[0014] Compared with existing technologies, the advantages of this invention are:

[0015] 1. A cross-type energy dissipation component with negative Poisson's ratio bidirectional energy dissipation. Under seismic action, the entire frame will move laterally. The lateral displacement of the frame is transmitted to four supports placed along two diagonals through axial force. Then, the two supports on one diagonal will be subjected to axial tension, and the two supports on the other diagonal will be subjected to axial pressure. The energy dissipation section of the core component in the support is provided with cyclically arranged concave hexagonal negative Poisson's ratio holes, so the energy dissipation section will deform.

[0016] 2. A cross-type energy dissipation component with negative Poisson's ratio bidirectional energy dissipation, which adopts the form of semi-concave hexagonal negative Poisson's ratio holes arranged in a loop on the energy dissipation section of the buckling restraint support core component. When subjected to seismic action, the holes deform and dissipate energy, thereby improving the energy dissipation capacity of the energy dissipation component.

[0017] 3. A cross-type energy dissipation component with negative Poisson's ratio bidirectional energy dissipation, which adopts four buckling-restrained supports, placed in pairs on the diagonal of the frame. During an earthquake, the frame shifts laterally, and the supports on the two diagonals are subjected to tension on one side and compression on the other, generating bidirectional energy dissipation and improving the building's lateral resistance.

[0018] 4. A cross-type energy dissipation component with negative Poisson's ratio bidirectional energy dissipation, which adopts a method of hinged connection between four supports and components with pins, making the component easier to install and allowing for replacement if the supports are damaged. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a cross-type energy dissipation component with negative Poisson's ratio bidirectional energy consumption.

[0020] Figure 2This is a schematic diagram of the supporting AA cross-section structure of a cross-type energy dissipation component with negative Poisson's ratio bidirectional energy dissipation.

[0021] Figure 3 This is a schematic diagram of the core unit and hinged component of a cross-type energy dissipation component with negative Poisson's ratio bidirectional energy dissipation.

[0022] Figure 4 This is a schematic diagram of the negative Poisson's ratio cell hole structure on the core unit of a cross-type energy dissipation component with bidirectional negative Poisson's ratio energy dissipation.

[0023] Figure 5 This is a schematic diagram of the connecting structure of a cross-type energy dissipation component with negative Poisson's ratio bidirectional energy consumption.

[0024] Reference numerals: 1-Node plate, 2-Core element, 3-Constraint element, 4-Hinged component, 5-Frame, 6-Connecting component. Detailed Implementation

[0025] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0027] Please see Figure 1-5 A cross-type energy dissipation component with negative Poisson's ratio bidirectional energy dissipation, such as Figure 1 As shown, the device includes a frame 5 and connectors 6. The frame 5 is a rectangular frame, and the connectors 6 are located at the center of the frame 5. Core units 2 are movably connected to the four corners of the frame 5 via the connectors 6. The middle portion of the core unit 2 has a cyclically arranged array of negative Poisson's ratio holes. Each negative Poisson's ratio hole consists of at least two rows of positively and negatively aligned, orthogonal semi-concave hexagonal holes. Figure 4 As shown, the orthogonal semi-concave hexagonal holes, with opposing forces, enhance the energy dissipation capacity of the core unit 2.

[0028] like Figure 2As shown, the support includes a core unit 2 and a constraint unit 3. The core unit 2 is an I-shaped section low-yield-point steel, and hinged members 4 are welded to both ends of the core unit 2, as shown. Figure 3 As shown.

[0029] The hinge component 4 includes a welded ear-shaped plate and a rectangular steel plate. The ear-shaped plate is provided with pin holes. The ear-shaped plate is connected to the connector 6 or the frame 5 by pins. The rectangular steel plate is welded to the core unit 2.

[0030] like Figure 5 As shown, the connector 6 is an octagonal steel plate, and the four corners of the connector 6 are provided with gaps and pin holes for the hinge component 4 to be inserted.

[0031] A node plate 1 is also provided between the hinge member 4 and the frame 5. The node plate 1 is embedded in the four corners of the frame. The node plate 1 includes welded angle steel and two triangular steel plates. The triangular steel plates are provided with pin holes.

[0032] A constraint unit 3 is also provided, which has a gap with the core unit 2. The constraint unit 3 is a rectangular cross-section steel sleeve, and concrete is poured between the constraint unit 3 and the core unit 2. The outer layer of the constraint unit 3 is a rectangular cross-section steel sleeve, and the inside is a concrete structure.

[0033] An air gap exists between the concrete poured between the constraint unit 3 and the core unit 2, and between the core unit 2 and the concrete. This ensures that the core unit can dissipate energy through the openings during an earthquake.

[0034] The frame 5 is a concrete frame.

[0035] Working principle

[0036] A cross-type energy dissipation component with negative Poisson's ratio bidirectional energy dissipation is described. Under seismic action, the entire frame will move laterally. The lateral displacement of the frame is transmitted to four supports placed along two diagonals through axial force. The two supports on one diagonal will be subjected to axial tension, and the two supports on the other diagonal will be subjected to axial pressure. The energy dissipation section of the core component in the support is provided with cyclically arranged concave hexagonal negative Poisson's ratio holes, so the energy dissipation section will deform.

[0037] The design employs a cyclic arrangement of semi-concave hexagonal negative Poisson's ratio holes in the energy-dissipating section of the buckling-restrained core component. Under seismic loads, the holes deform and dissipate energy, thereby improving the energy dissipation capacity of the energy-dissipating component.

[0038] The structure employs four buckling-restrained braces, placed in pairs along the diagonal of the frame. During an earthquake, when the frame shifts laterally, the braces on the two diagonals are subjected to both tension and compression, resulting in bidirectional energy dissipation and improving the building's lateral resistance.

[0039] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A negative Poisson's ratio bidirectional energy dissipation cross-type energy dissipation component, characterized by, It includes a frame (5) and a connecting piece (6), the frame (5) is a rectangular frame, the connecting piece (6) is arranged at the center position of the frame (5), the connecting piece (6) is movably connected with the core unit (2) between four corners of the frame (5) respectively, the middle part of the core unit (2) is provided with negative Poisson's ratio holes arranged in cycles, the negative Poisson's ratio holes are at least two columns of half concave hexagonal holes with positive and negative and orthogonal; The core unit (2) is a low yield point steel with an I-shaped cross section, and the core unit (2) is respectively welded with a hinged member (4) at two ends; The hinged member (4) includes a welded ear-shaped plate and a rectangular steel plate, the ear-shaped plate is provided with a pin hole, the ear-shaped plate is connected with the connecting piece (6) or the frame (5) through the pin, and the rectangular steel plate is welded with the core unit (2); The hinged member (4) and the frame (5) are further provided with a node plate (1), the node plate (1) is embedded in the four corners of the frame, the node plate (1) includes a welded angle steel and two triangular steel plates, the triangular steel plates are provided with pin holes; A constraint unit (3) is further arranged with a gap from the core unit (2), the constraint unit (3) is a rectangular cross-section steel sleeve, and the constraint unit (3) is poured with concrete between the core unit (2).

2. A negative Poisson’s ratio bidirectional energy-dissipating cross-type energy-dissipation component according to claim 1, characterized in that, The connecting piece (6) is an octagonal steel plate, and the connecting piece (6) is provided with a gap and a pin hole for the hinged member (4) at four corners.

3. A negative Poisson’s ratio bidirectional energy-dissipating cross-type energy-dissipation component according to claim 1, wherein The concrete poured between the constraint unit (3) and the core unit (2) and the core unit (2) have an air gap.

4. A negative Poisson’s ratio bidirectional energy-dissipating cross-type energy-dissipation component according to claim 1, wherein The frame (5) is a concrete frame.

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