Buckling-restrained energy dissipation and shock absorption device

Abstract

The utility model relates to a buckling-restrained energy dissipation and shock absorption device which comprises energy dissipation steel sheets, end plates and light constraint pipes, the energy dissipation steel sheets are arranged to form an energy dissipation steel sheet group, the end plates are arranged at the two ends of the energy dissipation steel sheet group, and the light constraint pipes wrap the periphery of the energy dissipation steel sheet group; wherein rubber concrete is completely poured in the light constraint pipe, so that the rubber concrete completely covers the energy dissipation steel sheet; open holes are formed in any energy dissipation steel sheet. The energy dissipation device has the advantages of being simple in structure and fast to manufacture, and effectively improves deformation capacity by delaying yield of the energy dissipation steel sheets.

Description

Technical Field

[0001] The utility model relates to the field of building accessories, in particular to an anti-buckling energy dissipation and shock absorption device. Background Art

[0002] Earthquakes are a highly destructive natural disaster characterized by suddenness, high frequency, high intensity, shallow epicenters, and wide distribution, easily causing large numbers of casualties and severe economic losses. Currently, scholars at home and abroad are working hard to explore more effective methods to enhance the seismic resistance of structures, all of which aim to improve the safety, stability, and durability of structures so that they can meet the seismic fortification goals of "not being damaged by small or medium earthquakes, being repairable and replaceable by large earthquakes, and not collapsing by huge earthquakes." To address the problem of traditional supports buckling under compression, researchers have proposed anti-buckling braces, which are capable of maintaining stable operation and dissipating seismic energy when under compression. However, existing anti-buckling energy-dissipating braces have problems such as complex structure, insufficient plastic deformation of the core plate, poor economic efficiency, and out-of-plane instability failure in the structure. Therefore, how to ensure that the shock-absorbing and energy-dissipating devices can operate stably to avoid damage to the main structure is one of the problems that urgently needs to be solved.

[0003] CN114635505 A discloses a beam-column joint connection structure, a steel tube concrete column-steel beam structure, and a construction method. This structure utilizes two staggered, low-yield-point curved steel plates, which are locked with bolts to achieve angle adjustment. However, this design, in which the bolts lock the weak areas of the low-yield-point curved steel plates, effectively strengthening these areas, makes the connection between the low-yield-point energy-dissipating steel plates and the end plates susceptible to buckling, resulting in poor energy dissipation and vibration reduction.

[0004] CN110805347 A discloses a node-type rubber-metal damper for earthquake resistance in building structures. It incorporates two annular low-yield-point mild steel damping structures between several external steel plates, with a rubber-metal damper positioned between the two low-yield-point mild steel damping structures. Energy is dissipated through the yielding of the low-yield-point mild steel damping structures and the rubber-metal damper. However, it does not specify that the external and central steel plates are low-yield-point steel plates. Therefore, the damper cannot effectively transfer seismic energy generated by compression to the low-yield-point mild steel damping structures, resulting in damage to the main structure and poor performance in practice.

[0005] CN110805132 A discloses a buckling-resistance mild steel second-order reinforced steel beam-column joint, which is provided with an arc-shaped I-beam, and the I-beam is provided with a steel pipe outside, and the steel pipe is filled with mortar, and low-yield point mild steel is arranged between the two steel pipes; its overall concept is basically the same as that of CN110805347 A, so it also has the problem of not being able to effectively transfer the seismic energy generated when under pressure to the low-yield point mild steel, and the actual use effect is not good. Utility Model Content

[0006] The purpose of the utility model is to provide an anti-buckling energy dissipation and shock absorption device, which has the characteristics of simple structure and quick production. It effectively improves the deformation capacity of the energy dissipation device by delaying the yielding of the energy dissipation steel sheet.

[0007] The utility model is realized by the following technical solutions: an anti-buckling energy dissipation and shock absorption device comprises energy dissipation steel sheets, two or more of which are provided and arranged vertically in parallel to form an energy dissipation steel sheet group;

[0008] Two end plates are provided and are respectively arranged at both ends of the energy-absorbing steel plate group, wherein one end plate is used to connect to the structural beam, and the other end plate is used to connect to the structural beam; and

[0009] Lightweight restraining tube, wrapped around the outer periphery of the energy-absorbing steel sheet group, with both ends maintaining gaps with the beam end plate and column end plate respectively;

[0010] The rubber concrete is completely poured in the lightweight restraint tube so that the rubber concrete completely covers the energy-absorbing steel sheet; and any energy-absorbing steel sheet is provided with an opening.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The outer layer adopts lightweight restraint tube, and combined with rubber concrete, it can effectively restrain the low yield point energy-consuming steel sheet and prevent the energy-consuming steel sheet from buckling;

[0013] 2. The lightweight restraint tube is made of glass fiber reinforced plastic (GFRP). Due to its advantages of light weight, high strength and strong corrosion resistance, GFRP can reduce the weight of the energy-consuming device and improve its corrosion resistance.

[0014] 3. Rubber concrete is impact-resistant, durable, lightweight, and has good deformation capacity. Filling lightweight restraint tubes with rubber concrete can absorb energy and reduce shock. The combined restraint of lightweight restraint tubes and rubber concrete can delay the yield of low-yield-point energy-absorbing steel sheets, effectively improving the deformation capacity of the energy-absorbing device.

[0015] 4. The energy-absorbing and shock-absorbing device has a simple structure and is easy to manufacture. It has the advantages of strong energy-absorbing capacity and good shock-absorbing effect. It can be quickly replaced after an earthquake and has broad engineering application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the anti-buckling energy dissipation and shock absorption device of the present invention;

[0017] Figure 2 It is a structural diagram of the energy-consuming steel sheet;

[0018] Figure 3 It is a schematic diagram of the structure after the energy-absorbing steel sheet and the end plate are combined;

[0019] Figure 4 It is a structural diagram of a lightweight restraint tube;

[0020] Figure 5 Schematic diagram of arranging buckling-resistance energy-dissipating and vibration-damping devices at beam-column joints;

[0021] Figure 6 Schematic diagram of arranging buckling-resistance energy-dissipating and vibration-damping devices at beam-column joints;

[0022] Figure 7 Schematic diagram of arranging anti-buckling energy dissipation and shock absorption devices for frame structures.

[0023] Explanation of reference numbers: 1 anti-buckling energy dissipation and shock absorption device, 2 lightweight restraint tube, 3 energy-absorbing steel sheet, 301 stiffening rib, 4 rubber concrete, 5 opening, 501 beam end plate, 502 bolt hole, 601 beam structure, 602 column structure. DETAILED DESCRIPTION

[0024] The utility model is described in detail below with reference to the accompanying drawings:

[0025] like Figure 1 Shown: An anti-buckling energy dissipation and shock absorption device, including

[0026] Energy-absorbing steel sheets 3, which are provided with two or more pieces and are arranged vertically in parallel to form an energy-absorbing steel sheet group;

[0027] Two end plates 501 are provided and are respectively arranged at both ends of the energy-absorbing steel plate group, wherein one end plate 501 is used to connect to the beam structure, and the other end plate 501 is used to connect to the beam structure; and

[0028] The lightweight restraining tube 2 is wrapped around the outer periphery of the energy-absorbing steel sheet group, and its two ends respectively maintain a gap with the beam end plate 501 and the column end plate 501;

[0029] The rubber concrete 4 is completely poured in the lightweight restraining tube 2 so that the rubber concrete 4 completely covers the energy-absorbing steel sheet 3 ; and any energy-absorbing steel sheet 3 is provided with an opening 5 .

[0030] The energy-absorbing steel sheet 3 is processed and opened to form a low-yield-point energy-absorbing steel sheet. The number of the energy-absorbing steel sheets 3 is set according to the requirements, and two sheets are generally suitable.

[0031] Low-yield-point energy-dissipating steel sheets are primarily used as raw materials for energy-dissipating components in seismic-resistant structures. They achieve energy dissipation and vibration reduction through plastic deformation. Low-yield-point energy-dissipating steel sheets are prone to buckling when subjected to pressure. By effectively restraining the low-yield-point energy-dissipating steel sheets with rubber concrete and lightweight restraining tubes (2), this buckling is prevented and its yielding is delayed. This allows for efficient energy dissipation in the anti-buckling energy-dissipating vibration-damping device, constrained by the lightweight restraining tubes (2), thereby enhancing the structure's seismic resistance.

[0032] The connection between the end plate 501 and any energy dissipation steel sheet 3 is provided with a stiffening rib 301. The function of the stiffening rib 301 is to reinforce both ends of the energy dissipation steel sheet 3 to ensure that the energy dissipation steel sheet can achieve fixed-point yielding (i.e., yielding mainly in the opening 5 area).

[0033] The energy-absorbing steel sheet 3 is further divided into an arc-shaped plate section and straight plate sections located at both ends of the arc-shaped plate section, and the extension lines of the two straight plate sections are perpendicular to each other; the opening 5 is provided on the arc-shaped plate section; and the lightweight constraint tube 2 is an arc-shaped square tube. Since the anti-buckling energy-absorbing and shock-absorbing device 1 of the present invention is mainly installed in the beam-column node area, and the angle between the beam and the column is generally 90 degrees, the energy-absorbing steel sheet 3 is further divided into an arc-shaped plate section and straight plate sections located at both ends of the arc-shaped plate section; the arc-shaped plate is mainly used to adjust the direction, and the opening 5 is provided on the arc-shaped plate section so that the arc-shaped plate section is also the area to ensure the yield of the energy-absorbing steel sheet. The straight plate section mainly extends outward as the part connected to the end plate 501, and the stiffening rib 301 is also provided in the straight plate section.

[0034] The end plate 501 is provided with a plurality of bolt holes 502, which facilitate the connection of the anti-buckling energy dissipation and shock absorption device 1 of the present invention with the beam structure and the column structure.

[0035] The lightweight restraining tube 2 needs to be lightweight, high-strength and corrosion-resistant. Currently, according to demand, it is believed that glass fiber reinforced plastic meets the above requirements, so the lightweight restraining tube 2 is mostly a GFRP tube made of glass fiber reinforced plastic.

[0036] The thickness of the lightweight restraining tube 2 is 4 mm to 12 mm and can be customized according to specific requirements.

[0037] The material model of the energy dissipation steel sheet 3 is one of BLY160, BLY225, and Q195. It is also selected according to demand.

[0038] Calculated by weight, the rubber content is 30±5 parts per 100 parts of rubber concrete 4, ultimately ensuring that the strength of the rubber concrete is controlled within 30MPa~50MPa.

[0039] A method for manufacturing an anti-buckling energy dissipation and shock absorption device comprises the following steps:

[0040] Step 1: Processing an energy-absorbing steel sheet 3 and forming openings 5 on the energy-absorbing steel sheet 3, and simultaneously fixing stiffening ribs 301 at both ends of the energy-absorbing steel sheet 3;

[0041] Step 2: Weld one end of a plurality of energy-absorbing steel sheets 3 to the end plate 501, wherein the energy-absorbing steel sheets 3 are arranged parallel to each other to form an energy-absorbing steel sheet group;

[0042] Step 3: A lightweight restraining tube 2 is sheathed around the outer periphery of the energy-absorbing steel sheet 3, and then rubber concrete 4 is poured into the lightweight restraining tube 2. The rubber concrete 4 is cured in a standard curing room (curing temperature: 20±0.5°C, curing humidity: ≥95%) for 28 days to ensure that the strength of the rubber concrete 4 meets the standard.

[0043] Step 4: Weld another end plate 501 to the other end of the multiple energy-absorbing steel sheets 3 .

[0044] The method of using the present invention is to connect the anti-buckling energy dissipation and shock absorption device 1 to the beam-column connection node and the frame structure, wherein one of the two end plates 501 is connected to the beam structure 601 and the other short plate 501 is connected to the column structure 602.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-buckling energy dissipation and shock absorption device, characterized in that: include Energy-absorbing steel sheets (3), which are provided with two or more sheets and are arranged vertically and in parallel to form an energy-absorbing steel sheet group; Two end plates (501) are provided and are respectively arranged at both ends of the energy-absorbing steel sheet group, wherein one end plate (501) is used to connect to the structural beam, and the other end plate (501) is used to connect to the structural beam; and A lightweight restraining tube (2) is coated on the outer periphery of the energy-absorbing steel sheet group, and both ends of the tube respectively maintain a gap with the beam end plate (501) and the column end plate (501); The rubber concrete (4) is completely poured into the lightweight restraining tube (2), so that the rubber concrete (4) completely covers the energy-consuming steel sheet (3); and any energy-consuming steel sheet (3) is provided with an opening (5).

2. The buckling restraint energy dissipation and shock absorption device according to claim 1, characterized in that: A stiffening rib (301) is provided at the connection between the end plate (501) and any energy-absorbing steel sheet (3).

3. The buckling restraint energy dissipation and shock absorption device according to claim 1, characterized in that: The energy-absorbing steel sheet (3) is further divided into an arc-shaped plate section and straight plate sections located at both ends of the arc-shaped plate section, and the extension lines of the two straight plate sections are perpendicular to each other; the opening (5) is opened on the arc-shaped plate section; and the lightweight restraining tube (2) is an arc-shaped square tube.

4. The buckling restraint energy dissipation and shock absorption device according to claim 1, characterized in that: The end plate (501) is provided with a plurality of bolt holes (502).

5. The buckling restraint energy dissipation and shock absorption device according to claim 1, characterized in that: The lightweight restraining tube (2) is a GFRP tube made of glass fiber reinforced plastic.

6. The buckling restraint energy dissipation and shock absorption device according to claim 1, characterized in that: The thickness of the lightweight restraining tube (2) is between 4 mm and 12 mm.

7. The buckling restraint energy dissipation and shock absorption device according to claim 1, characterized in that: The material model of the energy-absorbing steel sheet (3) is one of BLY160, BLY225 and Q195.

Images