An axial metal damper

Abstract

This invention discloses an axial metal damper, comprising a hollow, one-end-open force-transmitting sleeve, within which a force-transmitting shaft is disposed along its length. Multiple energy-dissipating plates, connected to the inner wall of the sleeve, are disposed around the outer periphery of the force-transmitting shaft. The load-bearing capacity of the force-transmitting sleeve and its bearings is more than twice the load-bearing capacity of each energy-dissipating plate. The energy-dissipating plates are made of low-yield-point steel. A first mounting head is disposed at the end of the force-transmitting sleeve away from its opening, and a second mounting head, movable along the length of the sleeve, is connected to the end of the force-transmitting shaft away from the first mounting head. A clearance exists between the force-transmitting shaft and the energy-dissipating plates and between the first and second mounting heads. The force-transmitting sleeve is filled with filler material along the length of the energy-dissipating plates. This invention enables axial shear energy dissipation, achieving a large vibration damping energy dissipation requirement under relatively small yield displacement.

Description

Technical Field

[0001] This invention relates to the field of earthquake resistance and disaster prevention technology for building structures, and in particular to an axial metal damper. Background Technology

[0002] To control the dynamic response of building structures, especially high-rise buildings, under wind and seismic loads, mechanical devices are often used to dissipate the energy of wind-induced vibrations and seismic forces, thereby protecting the main structural components. This is the concept of structural control. Currently, research and application of structural control are mainly divided into passive control, semi-active control, active control, and hybrid control. Among them, passive control technology is widely used in engineering construction or to improve the seismic or wind resistance performance of existing old buildings due to its simple and reliable construction, stable energy dissipation performance, low cost, and convenient maintenance. Passive energy dissipation and vibration reduction technology for structures refers to installing energy dissipation devices, such as dampers, in certain parts of the structure. The friction, bending, and elasto-plastic hysteretic deformation generated by the energy dissipation devices dissipate or absorb the energy input into the structure during earthquakes, reducing the seismic response of the main structure and achieving the purpose of vibration reduction and control.

[0003] Currently, passive energy dissipation and vibration reduction devices used in building structural systems can be mainly divided into four categories: viscous dampers, metallic dampers, viscoelastic dampers, and friction dampers. Metallic dampers are widely favored due to their low cost and reliable performance. Metallic dampers dissipate energy by utilizing the plastic strain energy of the metal material after yielding. However, existing metallic dampers all use a swing-shear method to dissipate the energy generated by earthquakes. Some structures are difficult to use with this type of damper and require axial energy dissipation to achieve the vibration reduction effect, but existing metallic dampers cannot achieve axial energy dissipation and vibration reduction. Summary of the Invention

[0004] The purpose of this invention is to provide an axial metal damper capable of axial shear energy dissipation, meeting the vibration reduction requirements of special structures.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] An axial metal damper includes a hollow force transmission sleeve with one open end. A force transmission shaft is arranged inside the sleeve along its length. Multiple energy dissipation plates connected to the inner wall of the force transmission sleeve are arranged around the outer periphery of the force transmission shaft. Both the force transmission sleeve and the force transmission shaft are made of high-strength steel, and each energy dissipation plate is made of low-yield-point energy dissipation steel.

[0007] The force transmission sleeve is provided with a first mounting head at one end away from its opening, and the force transmission shaft is connected to a second mounting head at one end away from the first mounting head, which can reciprocate along the length of the force transmission sleeve. There is a movable gap between the force transmission shaft and the energy dissipation plate and the first mounting head, and a movable gap between the energy dissipation plate and the second mounting head. The length section of the force transmission sleeve connected to the energy dissipation plate is filled with filler material.

[0008] By adopting the above technical solution, dampers are installed between building structures that require vibration reduction. When an earthquake occurs, the building structure vibrates, pulling the force transmission shaft back and forth relative to the force transmission sleeve. The force transmission shaft pulls the energy dissipation plate connected to the force transmission sleeve to axially shear and dissipate energy, thus offsetting the energy generated by the earthquake and achieving the purpose of vibration reduction.

[0009] A further provision of the present invention is that the surface of the force transmission shaft and each energy dissipation plate is covered with an isolation layer for isolating the filler material.

[0010] By adopting the above technical solution, the force transmission shaft and energy dissipation plate can deform more smoothly without being affected by the filler material.

[0011] A further feature of the present invention is that: both ends of the force transmission sleeve connected to the energy dissipation plate are connected to baffles, each baffle having a first sliding opening for the force transmission shaft and each energy dissipation plate to move, and the filler material is filled between the two baffles.

[0012] A further feature of the present invention is that the cross-sections of the first mounting head and the second mounting head are both in the shape of a cross, a straight line, or an H.

[0013] A further feature of the present invention is that a sealing plate is welded to the open end of the force transmission sleeve, and a second sliding port for the second mounting head to slide is provided through the sealing plate.

[0014] A further feature of the present invention is that the bearing capacity of the force transmission sleeve and the force transmission shaft is more than twice the bearing capacity of each energy dissipation plate, and each energy dissipation plate is made of any one of low yield point steels such as LY100, LY160, LY225, and Q235.

[0015] A further provision of the present invention is that the filler is concrete or mortar.

[0016] A further provision of the present invention is that the isolation layer is rubber, polyethylene, silicone, or latex.

[0017] A further feature of the present invention is that the cross-section of the force transmission sleeve is square or circular.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] Firstly, during an earthquake, the present invention uses a force-transmitting shaft to pull and axially shear the energy-dissipating plate connected to the force-transmitting sleeve, thereby achieving the purpose of vibration reduction and axial shearing energy dissipation to meet the vibration reduction requirements of special structures.

[0020] Secondly, the present invention fills the outer periphery of the energy-consuming plate with filler material, which constrains the energy-consuming plate so that the energy-consuming plate can only be sheared along the force transmission axis, and the energy-consuming deformation after shearing is easy to repair.

[0021] Thirdly, the present invention has a simple structure and reliable performance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a partial sectional view of the internal structure used in this invention;

[0024] Figure 3 This is a cross-sectional view of the present invention;

[0025] Figure 4 It is mainly used to display the baffle inside the force transmission sleeve.

[0026] In the figure: 1. Force transmission sleeve; 2. Force transmission shaft; 3. Energy dissipation plate; 4. First mounting head; 5. Second mounting head; 6. Baffle; 61. First sliding port; 7. Filler; 8. Isolation layer; 9. Sealing plate; 91. Second sliding port. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Example, refer to Figure 1-4 An axial metal damper includes a hollow force-transmitting sleeve 1 with one open end. In this embodiment, the force-transmitting sleeve 1 is square, but not limited to square, it can also be circular. A force-transmitting shaft 2 is arranged inside the sleeve along its length. Four energy-dissipating plates 3 connected to the inner wall of the force-transmitting sleeve 1 are arranged on the outer periphery of the force-transmitting shaft 2. The bearing capacity of the force-transmitting sleeve 1 and the force-transmitting shaft 2 is more than twice the bearing capacity of each energy-dissipating plate 3. Each energy-dissipating plate 3 is made of any one of low yield point steel such as LY100, LY160, LY225, Q235, etc. In this embodiment, the energy-dissipating plate 3 is made of LY100 steel.

[0029] A first mounting head 4 is provided at the end of the force transmission sleeve 1 away from its opening. A second mounting head 5, which can reciprocate along the length of the force transmission sleeve 1, is connected to the end of the force transmission shaft 2 away from the first mounting head 4. The cross-sections of the first mounting head 4 and the second mounting head 5 are both "+", "I" or "H" shaped. In this embodiment, the cross-section is "+". There is a movable gap between the force transmission shaft 2 and the energy dissipation plate 3 and the first mounting head 4. There is also a movable gap between the energy dissipation plate 3 and the second mounting head 5. A sealing plate 9 is welded to the open end of the force transmission sleeve 1. A second sliding port 91 for the second mounting head 5 to slide is opened through the sealing plate 9.

[0030] A baffle 6 is connected to both ends of the energy dissipation plate 3 inside the force transmission sleeve 1. Each baffle 6 has a first sliding port 61 for the movement of the force transmission shaft 2 and each energy dissipation plate 3. The force transmission sleeve 1 is filled with a filler 7 between the two baffles 6. The filler 7 is concrete or mortar. In this embodiment, concrete is used. The filler 7 is used to constrain the energy dissipation plate 3 so that the energy dissipation plate 3 can only shear along the axial direction of the force transmission shaft 2. The surface of the force transmission shaft 2 and each energy dissipation plate 3 is covered with an isolation layer 8 for isolating the filler 7. The isolation layer 8 is rubber, polyethylene, silicone or latex. In this embodiment, rubber is used. The isolation layer 8 isolates the filler 7 so that the force transmission shaft 2 and the energy dissipation plate 3 can deform more smoothly without being affected by the filler 7.

[0031] Working principle: The damper is installed between the building structures that need vibration reduction. When an earthquake occurs, the building structure vibrates, which pulls the force transmission shaft 2 to move back and forth relative to the force transmission sleeve 1. The force transmission shaft 2 pulls the energy dissipation plate 3 connected to the force transmission sleeve 1 to axially shear and dissipate energy, thereby offsetting the energy generated by the earthquake and achieving the purpose of vibration reduction.

[0032] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An axial metal damper, comprising a hollow force-transmitting sleeve (1) with one open end, characterized in that: The sleeve is provided with a force transmission shaft (2) arranged along its length. The outer periphery of the force transmission shaft (2) is provided with multiple energy dissipation plates (3) connected to the inner wall of the force transmission sleeve (1). The force transmission sleeve (1) and the force transmission shaft (2) are both made of high-strength steel, and each energy dissipation plate (3) is made of low yield point energy dissipation steel. The force transmission sleeve (1) is provided with a first mounting head (4) at one end away from its opening. The force transmission shaft (2) is connected to a second mounting head (5) at one end away from the first mounting head (4), which can reciprocate along the length of the force transmission sleeve (1). There is a movable gap between the force transmission shaft (2) and the energy dissipation plate (3) and the first mounting head (4). There is a movable gap between the energy dissipation plate (3) and the second mounting head (5). The length section of the force transmission sleeve (1) connected to the energy dissipation plate (3) is filled with filler material (7). The surfaces of the force transmission shaft (2) and each energy dissipation plate (3) are covered with an isolation layer (8) for isolating the filler (7). The force transmission sleeve (1) is connected to both ends of the energy dissipation plate (3) with baffles (6). Each baffle (6) has a first sliding port (61) for the force transmission shaft (2) and each energy dissipation plate (3) to move. The filler (7) is filled between the two baffles (6). The open end of the force transmission sleeve (1) is welded with a sealing plate (9), and a second sliding port (91) is opened through the sealing plate (9) for the second mounting head (5) to slide. The load-bearing capacity of the force-transmitting sleeve (1) and the force-transmitting shaft (2) is more than twice that of each energy-consuming plate (3). Each energy-consuming plate (3) is made of LY100, LY160, LY225 or Q235 steel.

2. An axial metal damper according to claim 1, characterized in that: The cross-sections of the first mounting head (4) and the second mounting head (5) are both in the shape of a cross, a line, or an H.

3. An axial metal damper according to claim 1, characterized in that: The filler (7) is concrete or mortar.

4. An axial metal damper according to claim 1, characterized in that: The isolation layer (8) is made of rubber, polyethylene, silicone or latex.

5. An axial metal damper according to claim 1, characterized in that: The cross-section of the force transmission sleeve (1) is square or circular.

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