An adaptive buckling-restrained brace

Abstract

The application discloses a self-adaptive buckling-restrained brace, which comprises a sealed cylinder cavity, the top surface of the sealed cylinder cavity is open, a sealed end cylinder is installed on the top surface, a hole matched with the radial dimension of a piston rod is formed in the center of the sealed end cylinder, the piston rod passes through the center hole of the sealed end cylinder and is partially installed in the sealed cylinder cavity, a energy dissipation partition plate is installed on the piston rod, the energy dissipation partition plate is transversely sleeved on the piston rod and moves in the sealed cylinder cavity along with the movement of the piston rod, the sealed cylinder cavity is filled with damping liquid, and a spring is installed in the sealed cylinder cavity. The energy dissipation partition plate moves along with the piston rod, the built-in upper oil storage tank cylinder body, lower oil storage tank limiting cylinder body and energy dissipation partition plate shear and extrude the damping liquid to dissipate energy, the primary spring and the secondary spring are extruded and deformed to generate restoring force, the piston rod is driven to reset automatically after the external force disappears, and the performance of the self-adaptive buckling-restrained brace can be automatically adjusted according to the change of external excitation.

Description

TECHNICAL FIELD

[0001] The present application relates to a damping device, belonging to the technical field of anti-seismic and damping, in particular to a multi-target adaptive high-efficiency energy dissipation self-centering buckling-restrained brace. BACKGROUND

[0002] Structural passive seismic control technology is the earliest seismic control method in civil engineering field, and has achieved fruitful results in theoretical research and practical engineering application. Structural passive seismic control technology installs damping energy dissipation devices in some parts of the structure, and reduces the dynamic response of the building structure under the action of earthquake through the energy dissipation capacity of the damping energy dissipation devices. Structural passive seismic control technology has low cost, simple structure, easy maintenance and does not need external energy, so it has attracted wide attention in civil engineering field and has been widely applied in practical engineering.

[0003] Since the invention of buckling-restrained brace in the 1970s, after more than 50 years of development, it has become a mature and standard means in the field of structural passive seismic control, and is widely used in various engineering projects as a lateral force resisting energy dissipation device.

[0004] As a damping energy dissipation device, buckling-restrained brace dissipates seismic energy through the elastic-plastic deformation of steel itself, and can not only be applied to the lateral force resisting system of multi-story or high-rise buildings, but also be used in the reinforcement and reconstruction engineering of existing buildings. When the structure is subjected to earthquake action, especially in rare earthquakes, the structure will have large residual deformation, which will seriously affect the safety of the structure under the action of subsequent aftershocks and the use of the structure after the earthquake. And large lateral deformation and residual deformation of the structure under strong earthquake action is the direct cause of the collapse of the structure. Therefore, the research and development of buckling-restrained brace with self-centering function is particularly important.

[0005] At present, the research on self-centering buckling-restrained brace is still in its infancy. Most of the existing self-centering buckling-restrained brace devices have the problems of complex structure or high cost, and most of them rely on the friction between the internal components of the self-centering buckling-restrained brace device to dissipate energy. With the change of external environmental factors such as temperature and the passage of time, the loss of pre-tightening force in the device will occur. At the same time, with the reciprocating deformation of the device under external force, the friction surface, friction components and even the entire device will deform. These factors will reduce or even lose the energy dissipation capacity of the self-centering buckling-restrained brace, and the reliability of the component energy dissipation capacity is low. And the existing self-centering buckling-restrained brace products have single performance, mostly only for a certain fixed use scene and external conditions, and cannot make corresponding performance adjustment according to the change of external excitation action suffered by the structure.

[0006] The application aims to design a multi-target adaptive high-efficiency energy consumption self-resetting buckling-restrained brace, so that the brace member not only has self-resetting capability, but also has stable and efficient energy dissipation capability which is not affected by external environmental factors and time factors, and the brace can change its mechanical properties according to the change of external excitation acting on the structure, so that its performance meets the current external force acting characteristics of the structure. The application solves the engineering problem of poor energy dissipation capability and single application scene of the current self-resetting brace. SUMMARY

[0007] The application aims to solve the technical problems in the prior art by the following technical scheme: An adaptive buckling-restrained brace comprises a sealed cylinder cavity, the top surface of the sealed cylinder cavity is open, a sealed end cylinder is installed on the top surface, a hole matching the radial dimension of a piston rod is formed in the center of the sealed end cylinder, the piston rod passes through the center hole of the sealed end cylinder and is partially installed in the sealed cylinder cavity, an energy dissipation partition plate is installed on the piston rod, the energy dissipation partition plate is transversely arranged on the piston rod and moves in the sealed cylinder cavity along with the movement of the piston rod, and the sealed cylinder cavity is filled with damping liquid, and a spring is further installed in the sealed cavity.

[0008] In one embodiment, the energy dissipation partition plate is at least one.

[0009] In one embodiment, the energy dissipation partition plate is two, a first energy dissipation partition plate and a second energy dissipation partition plate are sequentially arranged in the downward direction of the piston rod, the first and second energy dissipation partition plates are transversely and symmetrically installed on the piston rod, flanges are arranged around the energy dissipation partition plates, the spring is a double-layer spring, that is, a two-stage spring is sleeved outside the piston rod as an inner layer, and a one-stage spring is sleeved outside the two-stage spring as an outer layer, and the transverse dimension of the inner and outer springs is smaller than the flange distance of the energy dissipation partition plate.

[0010] In one embodiment, the outer one-stage spring is a wave spring or a spiral spring, and the inner two-stage spring is a disc spring or a spiral spring or a wave spring.

[0011] In one embodiment, a lower oil storage tank cylinder is installed in the lower part of the sealed cylinder cavity, a compression spring and a third energy dissipation partition plate are installed in the space surrounded between the lower oil storage tank cylinder and the sealed cylinder cavity, flanges are arranged around the third energy dissipation partition plate, the compression spring is sleeved outside the piston rod, the third energy dissipation partition plate is transversely and symmetrically installed on the piston rod, the transverse dimension of the compression spring is smaller than the flange distance of the third energy dissipation partition plate, and a through hole for damping oil flow is formed in the top surface of the lower oil storage tank cylinder; the third energy dissipation partition plate can cover the through hole in the stroke range.

[0012] In one embodiment, an upper oil storage tank cylinder is installed in the upper part of the sealed cylinder cavity.

[0013] In one embodiment, the lower sealing connector is connected to the lower end of the sealing cylinder cavity, and the upper connector is installed on the top of the piston.

[0014] In one embodiment, the two ends of the compression spring are limitedly connected between the lower oil storage tank limiting cylinder and the inner bottom surface of the sealing cylinder cavity, or the two ends of the compression spring are free of connection, and the transverse position of the compression spring is limited by the third energy dissipation partition flange.

[0015] In one embodiment, the third energy dissipation partition is screw-connected to the bottom of the piston rod, and the third energy dissipation partition is locked by a nut.

[0016] In one embodiment, a through hole for filling damping liquid is formed in the bottom of the sealing cylinder cavity.

[0017] In one embodiment, the lower end of the inner layer spring abuts against the lower oil storage tank limiting cylinder or the energy dissipation partition, and the upper end of the inner layer spring leaves a gap between the upper oil storage tank cylinder or the energy dissipation partition; the lower end of the outer layer spring abuts against the lower oil storage tank limiting cylinder or the energy dissipation partition, and the upper end of the outer layer spring close to the upper oil storage tank cylinder abuts against the upper oil storage tank cylinder or leaves a gap therebetween, and the gap is smaller than the gap left by the inner layer spring.

[0018] In one embodiment, the top of the piston rod is a protrusion, and the protrusion abuts against the upper oil storage tank cylinder.

[0019] In one embodiment, the energy dissipation partition is further provided with a through hole for the flow of damping liquid, and / or the energy dissipation partition flange is provided with a damping groove for the flow of damping liquid.

[0020] In one embodiment, gaps are reserved between the first and second energy dissipation partitions, the upper oil storage tank cylinder, the lower oil storage tank cylinder and the sealing cylinder cavity, and gaps are reserved between the third energy dissipation partition and the inner side wall of the lower oil storage tank cylinder.

[0021] The present application has the following advantages and beneficial effects:

[0022] 1) When the entire support is under pressure, the external pressure pushes the piston rod to move downward, the energy dissipation partition moves with the piston rod, the damping liquid is sheared and extruded by the built-in upper oil storage tank cylinder and energy dissipation partition to dissipate energy, the primary spring and the secondary spring are extruded and deformed to generate restoring force, and after the external force disappears, the piston rod is driven to reset.

[0023] When the entire support is subjected to tension, the external tension pulls the piston rod to move away from the lower sealing connector, the energy dissipation diaphragm moves with the piston rod, and finally drives the built-in lower oil tank cylinder body to move together. The shear and extrusion of the built-in lower oil tank cylinder body and the energy dissipation diaphragm on the damping fluid dissipate energy, the primary spring and the secondary spring are extruded and deformed to generate restoring force, and after the external force disappears, the driving piston rod is reset.

[0024] Through this design, it can be ensured that the damping reset mechanism can generate restoring force to push the component to reset itself, regardless of whether the entire support is subjected to pressure or tension. The built-in lower oil tank cylinder body can further limit the movement direction of the damping reset mechanism, and has a limiting ability.

[0025] 2) When the entire support is subjected to pressure, the external force pushes the piston rod to move towards the lower sealing connector, the protruding part abuts against the built-in upper oil tank cylinder body, and drives the built-in upper oil tank cylinder body and the energy dissipation diaphragm to move synchronously.

[0026] When the overall structure is subjected to small external excitation (wind vibration, machine vibration, subway vibration and small earthquake action, etc.), the structure deformation is small, the overall compression deformation of the component is small, the lower cylinder body extrusion compression spring and the primary wave spring are pressed into working state to provide self-resetting restoring force for the component, and the secondary spring is still in free state; when the structure is subjected to increased external excitation (large earthquake, rare earthquake, etc.), the structure deformation increases, the overall compression deformation of the component increases, the lower cylinder body extrusion compression spring, the primary spring and the secondary spring are all pressed into working state, which can increase the additional stiffness of the structure, reduce the deformation of the structure, and provide greater self-resetting restoring force for the component.

[0027] When the entire support is subjected to tension, the external tension pulls the piston rod to move towards the upper sealing end cylinder, and drives the energy dissipation diaphragm to move with the piston rod and finally drives the built-in lower oil tank limiting cylinder body to move together.

[0028] When the overall structure is subjected to small external excitation (wind vibration, machine vibration, subway vibration and small earthquake action, etc.), the structure deformation is small, the overall tensile deformation of the component is small, the lower cylinder body tensile compression spring and the primary wave spring are pressed into working state to provide self-resetting restoring force for the component, and the secondary spring is still in free state; when the structure is subjected to increased external excitation (large earthquake, rare earthquake, etc.), the structure deformation increases, the overall tensile deformation of the component increases, the lower cylinder body tensile compression spring, the primary spring and the secondary spring are all pressed into working state, which can increase the additional stiffness of the structure, reduce the deformation of the structure, and provide greater self-resetting restoring force for the component.

[0029] 3) Through the wide flange structure design of the energy dissipation diaphragm, not only the shear area of the damping fluid between the energy dissipation diaphragm and the sealing cylinder body can be increased to increase the energy dissipation capacity, but also the primary spring can be fixed in horizontal position.

[0030] Through the wide flange structure design of the energy dissipation partition plate, the shear area of the damping liquid between the wide flange and the inner wall of the lower oil storage tank cylinder body can be increased, and the lower cylinder body stretching compression spring and the lower cylinder body extrusion compression spring can be fixed and limited.

[0031] The long cylinder body of the built-in upper oil storage tank cylinder body and the built-in lower oil storage tank limiting cylinder body can increase the shear area of the damping liquid between the long cylinder body and the sealing cylinder body, increase the energy dissipation capacity, and limit the movement direction of the intermediate damping mechanism to play a limiting role.

[0032] 4) The damping liquid is circulated between the built-in upper oil storage tank cylinder body, the energy dissipation fixed partition plate and the built-in lower oil storage tank limiting cylinder body through the damping hole / damping slot, and the energy dissipation capacity and deformation compatibility of the support member can be improved.

[0033] 5) When the support member is compressed, the damping liquid automatically circulates and adjusts between the built-in upper oil storage tank cylinder body, the sealing cylinder body and the built-in lower oil storage tank limiting cylinder body through the reserved circulation hole of the built-in lower oil storage tank limiting cylinder body; when the support member is stretched, the damping liquid automatically circulates and adjusts between the built-in upper oil storage tank cylinder body, the sealing cylinder body and the built-in lower oil storage tank limiting cylinder body through the shear gap between the built-in lower oil storage tank limiting cylinder body and the built-in upper oil storage tank cylinder body and the sealing cylinder body. The friction between the internal components of the multi-target adaptive high-efficiency energy dissipation self-resetting buckling-resistant support and the force between the spring member and the damping liquid can provide certain energy dissipation capacity when the support member is stretched / compressed.

[0034] 6) The upper sealing end cylinder and the internal multi-stage adaptive energy dissipation self-resetting fixed frame structure core components in the multi-target adaptive high-efficiency energy dissipation self-resetting buckling-resistant support member can be disassembled, and all components can be mass processed in the factory. The components are mainly assembled and fixed by threads or high-strength bolts.

[0035] 7) The multi-target adaptive high-efficiency energy dissipation self-resetting buckling-resistant support can solve the problems of weak energy dissipation capacity, low reliability and single application scene of the self-resetting support member, fully utilize the energy dissipation capacity and self-resetting capacity of the buckling-resistant support, and adjust the rigidity and self-resetting capacity of the support member according to the change of external excitation conditions. The current external excitation conditions are automatically adjusted and adapted, and the safety of the structure under the combined excitation of wind vibration, subway vibration, machine vibration and earthquake is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 The overall structure schematic diagram of the adaptive buckling-resistant support in the first embodiment is disclosed;

[0037] Figure 2 The compression force acting one-stage working deformation schematic diagram of the adaptive buckling-resistant support in the first embodiment is disclosed;

[0038] Figure 3 A schematic diagram of the two-stage working deformation of the adaptive buckling-restrained brace under pressure in the first embodiment is disclosed;

[0039] Figure 4 A schematic diagram of the deformation of the adaptive buckling-restrained brace under tension in the first embodiment is disclosed;

[0040] Figure 5 A schematic diagram of the two-stage working deformation of the adaptive buckling-restrained brace under tension in the first embodiment is disclosed;

[0041] Figure 6 The overall structural diagram of the adaptive anti-buckling brace in the second embodiment is disclosed;

[0042] Figure 7 The overall structural diagram of the adaptive anti-buckling brace in the third embodiment is disclosed.

[0043] The corresponding component names represented by the numbers in the figure are: 1. Upper connecting piece; 2. Piston rod; 3. Upper sealing end tube; 4. Damping fluid; 5. Sealing cylinder cavity; 6. Through hole; 7. Lower sealing connecting piece; 8. Nut; 9. Extrusion compression spring; 10. Third energy-absorbing baffle; 11. Tensile compression spring; 12. Lower oil storage tank limit cylinder body; 13. Second energy-absorbing baffle; 14. Primary spring; 15. Secondary spring; 16. Upper oil storage tank cylinder body; 17. Piston rod protrusion; 18. Through hole; 19. Through hole; 20. First energy-absorbing baffle; 21. Energy-absorbing baffle flange. Specific implementation method:

[0044] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which like reference numerals represent like features throughout, wherein:

[0045] refer to Figure 1 and combined Figures 2-7 , Figure 1 The overall structure diagram of the adaptive anti-buckling support in the first embodiment is disclosed. Figure 1 In an embodiment, an adaptive anti-buckling support includes a sealing cylinder cavity 5, the top surface of the sealing cylinder cavity 5 is open, and an upper sealing end tube 3 is installed on the top surface. A hole matching the radial size of the piston rod is opened in the center of the upper sealing end tube 3, and the piston rod 2 passes through the center hole of the upper sealing end tube 3 and is partially installed in the sealing cylinder cavity 5. An energy-absorbing baffle is passed through the piston rod 2, and the energy-absorbing baffle is laterally connected to the piston rod 2 and moves in the sealing cylinder cavity 5 as the piston rod 2 moves; the sealing cylinder cavity 5 is filled with damping fluid 4, and a spring is also installed in the sealing cylinder cavity 5.

[0046] Preferably, the energy dissipation partition is at least two, the first energy dissipation partition 20 and the second energy dissipation partition 13 are arranged in sequence along the downward direction of the piston rod 2, the first and second energy dissipation partitions are installed on the piston rod 2 in transverse symmetry, the flanges 21 are arranged around the energy dissipation partitions, the spring is a double-layer spring, that is, the inner-layer secondary spring 15 is sleeved on the outer side of the piston rod 2, and the outer-layer primary spring 14 is sleeved on the outer side of the inner-layer secondary spring 15, the transverse dimensions of the primary spring and the secondary spring are smaller than the distance between the flanges on both sides of the energy dissipation partition.

[0047] Preferably, the outer-layer primary spring 14 is a wave spring or a spiral spring, and the inner-layer secondary spring 15 is a disc spring or a spiral spring or a wave spring.

[0048] Preferably, the lower oil storage tank cylinder 12 is installed in the lower part of the sealed cylinder cavity 5, the extrusion compression spring 9, the tensile compression spring 11 and the third energy dissipation partition 10 are installed in the space surrounded between the lower oil storage tank cylinder 12 and the sealed cylinder cavity 5, the flanges are arranged around the third energy dissipation partition 10, the compression springs 9 and 11 are sleeved on the outer side of the piston rod 2, the third energy dissipation partition 10 is installed on the piston rod 2 in transverse symmetry, the transverse dimensions of the extrusion compression spring 9 and the tensile compression spring 11 are smaller than the distance between the inner sides of the flanges of the third energy dissipation partition 10, and the through hole 6 for damping oil flow is arranged on the top surface of the lower oil storage tank limiting cylinder 12; the third energy dissipation partition 10 can cover the through hole in the stroke range.

[0049] Preferably, the upper oil storage tank cylinder 16 is installed in the upper part of the sealed cylinder cavity 5.

[0050] Preferably, the lower sealing connecting piece 7 is connected to the sealed cylinder cavity 5 downwardly, and the upper connecting piece 1 is installed on the top of the piston.

[0051] Preferably, the two ends of the compression springs 9 and 11 are limitingly connected between the lower oil storage tank limiting cylinder 12, the third energy dissipation partition 10 and the inner bottom surface of the sealed cylinder cavity 5, or the two ends of the compression springs 9 and 11 are free of connection, and the transverse positions of the compression springs 9 and 11 are limited by the flanges of the third energy dissipation partition 10.

[0052] Preferably, the third energy dissipation partition 10 is threadedly connected to the bottom of the piston rod 2, and the third energy dissipation partition 10 is locked by the nut 8.

[0053] Preferably, the through hole 19 for filling damping liquid 4 is arranged on the bottom of the sealed cylinder cavity 5.

[0054] Preferably, the upper end of the primary spring 14 abuts against the upper oil storage tank cylinder 16 or the energy dissipation partition, and the lower end of the secondary spring 15 abuts against the lower oil storage tank cylinder 12 or the energy dissipation partition.

[0055] Preferably, the top of the piston rod 2 is a protrusion 17, which abuts against the upper oil tank cylinder 16.

[0056] Preferably, through holes 18 for the flow of damping liquid are further provided in the energy dissipation partition plates. Figure 7 )。

[0057] Preferably, gaps are reserved between the first and second energy dissipation partition plates, the upper oil tank cylinder 16, the lower oil tank cylinder 12 and the sealed cylinder cavity 5, and between the third energy dissipation partition plate 10 and the inner side wall of the lower oil tank cylinder 12.

[0058] In the first embodiment, the present application proposes a multi-target adaptive high-efficiency energy dissipation self-resetting buckling-restrained brace. The sealed cylinder cavity 5 can be filled with damping liquid 4, which can be viscous damping liquid, damping oil or other types. The sealed cylinder cavity 5 can be integrated or have a bottom reserved filling hole or be split. The upper sealed end cylinder 3 and the lower sealed connector 7 can be arranged at the two ends of the sealed cylinder cavity 5, and the piston rod 2 is arranged in the upper sealed end cylinder 3. The upper end of the piston rod 2 is fixedly connected with the upper connector 1, and the upper connector 1 and the lower sealed connector 7 are respectively fixedly connected with the top end of the piston rod 2 and the bottom end of the sealed cylinder cavity 5. A filling hole 19 for injecting the damping liquid 4 into the inner cavity of the sealed cylinder is provided at the bottom of the sealed cylinder cavity 5.

[0059] The piston rod 2 is sleeved with an inner built upper oil storage tank cylinder body 16 and an inner built lower oil storage tank limiting cylinder body 12. The inner built upper oil storage tank cylinder body 16 and the inner built lower oil storage tank cylinder body 12 respectively abut against the upper sealing end cylinder 3 and the sealing cylinder cavity body 5. The inner built lower oil storage tank limiting cylinder body 12 is open towards the lower sealing connector 7. The inner built upper oil storage tank cylinder body 16 and the inner built lower oil storage tank limiting cylinder body 12 are provided with gaps and / or flow-through grooves for the flow-through of the damping liquid 4 between the inner walls of the sealing cylinder cavity body 5. The side wall of the piston rod 2 close to the upper sealing end cylinder 3 is provided with a protruding part 17. The outer side wall of the protruding part 17 can be circularly arranged. The protruding part 17 can be penetrated into the upper sealing end cylinder 3 and abut against the inner built upper oil storage tank cylinder body 16. The protruding part 17 and the upper sealing end cylinder 3 are sealed. The end of the piston rod 2 towards the lower sealing connector 7 is threadedly connected with a third energy dissipation partition plate 10. The third energy dissipation partition plate 10 is located in the inner built lower oil storage tank limiting cylinder body 12. The piston rod 2 is threadedly connected with a nut 8 abutting against the third energy dissipation partition plate 10. The nut 8 abuts against the end face of the third energy dissipation partition plate 10 towards the lower sealing connector 7. The space between the inner built upper oil storage tank cylinder body 16, the sealing cylinder cavity body 5 and the upper sealing end cylinder 3 constitutes an upper oil storage tank. The space between the inner built lower oil storage tank cylinder body 12 and the sealing cylinder cavity body 5 constitutes a lower oil storage tank. A multi-target adaptive damping energy dissipation self-resetting mechanism composed of springs and energy dissipation partition plates is arranged between the inner built upper oil storage tank cylinder body 16 and the inner built lower oil storage tank cylinder body 12. The damping liquid 4 is automatically adjusted to flow through among the inner built lower oil storage tank cylinder body 12, the multi-target adaptive damping energy dissipation self-resetting mechanism and the inner built upper oil storage tank cylinder body 16.

[0060] The adaptive buckling-restrained brace is subjected to pressure. The external force drives the piston rod 2 to move towards the lower sealing connector 7. The protruding part 17 abuts against the inner built upper oil storage tank cylinder body 16 and drives the inner built upper oil storage tank cylinder body 16 to synchronously move with the third energy dissipation partition plate 10. The inner built upper oil storage tank cylinder body 16, the first energy dissipation fixed partition plate 20, the second energy dissipation fixed partition plate 13 and the sealing cylinder cavity body 5 and the inner built lower oil storage tank cylinder body 12 and the third energy dissipation partition plate 10 between them have the shearing and extruding effects on the damping liquid 4, which has the energy dissipation effect. When the whole building structure is subjected to small external excitation (such as wind vibration, machine vibration, subway vibration and small earthquake action), the structure deformation is small. The overall compression deformation of the component is small. The lower cylinder extrudes and compresses the spring 9 and the first-stage spring 14 to be in the working state to provide the self-resetting recovery force for the component. The second-stage spring 15 is still in the free state. When the structure is subjected to increased external excitation (large earthquake, rare earthquake, etc.), the structure deformation is increased. The overall compression deformation of the component is increased. The lower cylinder extrudes and compresses the spring 9, the first-stage spring 14 and the second-stage spring 15 to be in the working state. The additional stiffness of the structure can be increased to reduce the deformation of the structure and provide a greater self-resetting recovery force for the component.

[0061] When the whole component is in tension, the external force pulls the piston rod 2 to move upward to the sealing end cylinder 3, and drives the lower limit locking energy dissipation baffle 10 to move inward to the lower oil tank limiting cylinder 12 direction and finally both of them move together. The shear and extrusion effects of the damping liquid 4 between the lower oil tank limiting cylinder 12, the first energy dissipation fixed baffle 20, the second energy dissipation fixed baffle 13 and the sealing cylinder 5 and between the lower oil tank limiting cylinder 12 and the lower limit locking energy dissipation baffle 10 play the energy dissipation effect; When the whole structure is subjected to small external excitation (wind vibration, machine vibration, subway vibration and small earthquake action, etc.), the structure deformation is small, the overall tensile deformation of the component is small, the lower cylinder tensile compression spring 11 and the first stage spring 14 are pressed into working state to provide self-resetting restoring force for the component, and the second stage spring 15 is still in free state; When the structure is subjected to external excitation increase (large earthquake, rare earthquake, etc.), the structure deformation increases, the overall tensile deformation of the component increases, the lower cylinder tensile compression spring 11, the first stage spring 14 and the second stage spring 15 are all pressed into working state, which can increase the additional stiffness of the structure, reduce the deformation of the structure, and provide greater self-resetting restoring force for the component.

[0062] The multi-target adaptive damping energy dissipation self-resetting mechanism in the supporting component can ensure that the whole supporting component is in the force state whether it is subjected to tension or pressure, and the multi-target adaptive damping energy dissipation self-resetting mechanism can automatically change the mechanical properties according to different external forces to provide self-resetting restoring force and stable energy dissipation capacity for the component.

[0063] The bottom of the built-in lower oil tank limiting cylinder 12 is provided with a flow-through hole 6. In the initial state, the lower limiting locking energy dissipation baffle 10 does not cover and close the flow-through hole 6. In the state of supporting tension, the supporting member is deformed under tension, the first spring 14 and the lower cylinder stretching compression spring 11 are in working state, the lower limiting locking energy dissipation baffle 10 does not cover and close the flow-through hole 6, the damping liquid 4 mainly flows and adjusts in the supporting member through the flow-through hole 6, and the damping liquid 4 is sheared and extruded by the lower limiting locking energy dissipation baffle 10 and the built-in lower oil tank limiting cylinder 12 and the first energy dissipation fixed baffle 20, the second energy dissipation fixed baffle 13, the built-in lower oil tank limiting cylinder 12 and the sealed cylinder cavity 5 to dissipate energy; the supporting member is further tensioned, the supporting member is deformed under tension, the second spring 15 is in working state, the flange of the lower limiting locking energy dissipation baffle 10 abuts against the bottom surface of the built-in lower oil tank limiting cylinder 12, covers and closes the flow-through hole 6, and the lower limiting locking energy dissipation baffle 10 and the built-in lower oil tank limiting cylinder 12 move together, the damping liquid 4 flows and adjusts in the supporting member through the gap between the built-in lower oil tank limiting cylinder 12 and the sealed cylinder cavity 5, and the damping liquid 4 is sheared and extruded by the built-in lower oil tank limiting cylinder 12 and the first energy dissipation fixed baffle 20, the second energy dissipation fixed baffle 13 and the sealed cylinder cavity 5 to dissipate energy. When the supporting member is pressed, the lower limiting locking energy dissipation baffle 10 does not cover and close the flow-through hole 6, the damping liquid 4 mainly flows and adjusts in the supporting member through the flow-through hole 6, and the damping liquid 4 is sheared and extruded by the lower limiting locking energy dissipation baffle 10 and the lower oil tank limiting cylinder 12 and the built-in upper oil tank cylinder 16, the first energy dissipation fixed baffle 20, the second energy dissipation fixed baffle 13 and the sealed cylinder cavity 5 to dissipate energy. The multi-target adaptive high-efficiency energy dissipation self-resetting anti-buckling support can also provide certain energy dissipation capacity through the friction between the internal components during deformation.

[0064] The cylinder side wall of the built-in lower oil tank limiting cylinder 12 can further limit the movement direction of the multi-target adaptive damping energy dissipation self-resetting mechanism, and has a limiting capacity; the wide flange structure of the third energy dissipation baffle 10, the first energy dissipation fixed baffle 20 and the second energy dissipation baffle 13 can not only improve the energy dissipation capacity of the supporting member, but also can fix the position of the spring member. The first energy dissipation fixed baffle 20 and the second energy dissipation fixed baffle 13 can reduce the initial assembly gap that may occur when the first spring 14 is assembled.

[0065] The multi-objective adaptive damping and energy dissipation self-reset mechanism includes multiple energy-dissipating baffles sleeved on the piston rod 2, and primary and secondary springs 14 and 15 disposed on either side of the fixed energy-dissipating baffles. The specific number is determined based on actual conditions. The primary springs 14 can be wave springs or coil springs, while the secondary springs 15 can be disc springs, wave springs, and coil springs. When using disc springs and wave springs as self-reset elements, the required bearing capacity and deformation of the support structure can be assembled through various combinations such as overlapping, matching, or mixing the springs.

[0066] The second embodiment is different from the first embodiment in that (refer to Figure 6 ), there is a gap between the primary spring 14 and the built-in upper oil tank cylinder 16. The multi-objective adaptive high-efficiency energy-consuming self-resetting anti-buckling support is divided into three different working stages according to the external excitation and deformation of the structure, and can be automatically adjusted according to the change of external excitation, so that the performance of the multi-objective adaptive high-efficiency energy-consuming self-resetting anti-buckling support can adapt to the current external excitation conditions. In the first stage, when the structure is subjected to environmental vibration (wind vibration, machine vibration, subway vibration, etc.), the deformation of the multi-objective adaptive high-efficiency energy-consuming self-resetting anti-buckling support is very small, and there is no need to provide a self-resetting force to the structure and support. The primary spring 14 and the secondary spring 15 are not in working condition, and the supporting components are mainly energy-consuming. The energy consumption of the supporting components reduces the dynamic response of the building structure; in the second stage, when the structure is subjected to a small or medium earthquake, the deformation of the multi-objective adaptive high-efficiency energy-consuming self-resetting anti-buckling support increases, the primary spring 14 enters the working state, and the secondary spring 15 does not enter the working state. The building structure is still in the elastic stage and only needs to provide a small self-resetting force. The energy dissipation capacity of the supporting components is further improved, which can further reduce the dynamic response of the structure; in the third stage, when the structure is subjected to a large earthquake or a rare earthquake, the deformation of the multi-objective adaptive high-efficiency energy-consuming self-resetting anti-buckling support is further increased, and the first-level spring 14 and the second-level spring 15 both enter the working state. At this time, the building structure undergoes a large deformation or even structural damage, and a large self-resetting restoring force is required. The coordinated work of the first-level spring 14 and the second-level spring 15 can further improve the self-resetting ability, and as the deformation and speed increase, the energy dissipation capacity of the supporting components is further improved, and the dynamic response of the building structure can be reduced by improving the energy dissipation capacity.

[0067] The third embodiment is different from the first embodiment in that (refer to Figure 7), the damping hole 18 for the damping liquid 4 to flow is opened in the built-in upper oil storage tank cylinder body 16, the first energy dissipation fixed partition 20, the second energy dissipation fixed partition 13 and the built-in lower oil storage tank limiting cylinder body 12, and the built-in upper oil storage tank cylinder body 16, the first energy dissipation fixed partition 20, the second energy dissipation fixed partition 13 and the built-in lower oil storage tank limiting cylinder body 12 are attached to the inner wall of the sealed cylinder cavity 5 or a gap is left between the built-in upper oil storage tank cylinder body 16, the first energy dissipation fixed partition 20, the second energy dissipation fixed partition 13 and the built-in lower oil storage tank limiting cylinder body 12 and the inner wall of the sealed cylinder cavity 5. The damping hole 18 can supply the damping liquid 4 to flow between the built-in upper oil storage tank cylinder body 16, the first energy dissipation fixed partition 20, the second energy dissipation fixed partition 13 and the built-in lower oil storage tank limiting cylinder body 12, has the damping energy dissipation function of shearing and extruding the damping liquid 4, and improves the energy dissipation capacity and self-resetting capacity of the support member.

[0068] The above description of the application and its embodiments is illustrative and not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it, without departing from the purpose of the application, similar structural modes and embodiments can be designed without creativity, which should belong to the protection scope of the application.

Claims

1. An adaptive buckling-restrained brace characterized by: The sealing cylinder cavity is provided with a top surface which is open, and a top sealing end cylinder is installed on the top surface. A hole matching the radial dimension of the piston rod is formed in the center of the top sealing end cylinder. The piston rod passes through the center hole of the top sealing end cylinder and is partially installed in the sealing cylinder cavity. An energy dissipation baffle is installed on the piston rod. The energy dissipation baffle is transversely sleeved on the piston rod and moves in the sealing cylinder cavity along with the movement of the piston rod. The sealing cylinder cavity is filled with damping liquid, and a spring is installed in the sealing cavity. The energy dissipation baffles are at least two, and a first energy dissipation baffle and a second energy dissipation baffle are sequentially arranged in the downward direction of the piston rod. The first and second energy dissipation baffles are transversely symmetrically installed on the piston rod. Flanges are arranged around the energy dissipation baffles. The spring is a double-layer spring, that is, an inner two-stage spring is sleeved on the outer side of the piston rod, and an outer one-stage spring is sleeved on the outer side of the inner two-stage spring. A lower oil storage tank limiting cylinder is installed in the lower part of the sealing cylinder cavity. The space surrounded between the lower oil storage tank limiting cylinder and the sealing cylinder cavity constitutes a lower oil storage tank, and a compression spring and a third energy dissipation baffle are installed in the lower oil storage tank. An upper oil storage tank cylinder is installed in the upper part of the sealing cylinder cavity. The space surrounded between the upper oil storage tank cylinder, the sealing cylinder cavity and the top sealing end cylinder constitutes an upper oil storage tank. The lower end of the inner spring abuts against the lower oil storage tank limiting cylinder or the energy dissipation baffle, and the upper end of the inner spring leaves a gap between the upper oil storage tank cylinder or the energy dissipation baffle. The lower end of the outer spring abuts against the lower oil storage tank limiting cylinder or the energy dissipation baffle, and the upper end of the outer spring close to the upper oil storage tank cylinder abuts against the upper oil storage tank cylinder or leaves a gap therebetween, and the gap is smaller than the gap left by the inner spring.

2. The self-adaptive buckling-restrained brace of claim 1, wherein: The transverse dimension of the one-stage spring and the two-stage spring is smaller than the distance between the flanges of the energy dissipation baffles.

3. The self-adaptive buckling-restrained brace of claim 1, wherein: The outer one-stage spring is a wave spring or a spiral spring, and the inner two-stage spring is a disc spring or a spiral spring or a wave spring.

4. The self-adaptive buckling-restrained brace of claim 3, wherein: Flanges are arranged around the third energy dissipation baffle. A compression spring is sleeved on the outer side of the piston rod. The third energy dissipation baffle is transversely symmetrically installed on the piston rod. The transverse dimension of the compression spring is smaller than the distance between the flanges of the third energy dissipation baffle. A through hole for the flow of damping liquid is formed in the top surface of the lower oil storage tank cylinder. The third energy dissipation baffle can cover the through hole in the stroke range.

5. The self-adaptive buckling-restrained brace of claim 1, wherein: A lower sealing connector is connected to the sealing cylinder cavity, and an upper connector is installed on the top of the piston.

6. The self-adaptive buckling-restrained brace of claim 4, wherein: The two ends of the compression spring are limitingly connected between the lower oil storage tank cylinder and the inner bottom surface of the sealing cylinder cavity, or the two ends of the compression spring are freely connected without connection. The transverse position of the compression spring is limited by the flanges of the third energy dissipation baffle.

7. The self-adaptive buckling-restrained brace of claim 6, wherein: The third energy dissipation baffle is threadedly connected to the bottom of the piston rod, and the third energy dissipation baffle is locked by a nut.

8. The self-adaptive buckling-restrained brace of claim 1, wherein: A through hole for filling damping liquid is formed in the bottom of the sealing cylinder cavity.

9. The self-adaptive buckling-restrained brace of claim 4, wherein: The top of the piston rod is a protruding part which abuts against the upper oil storage tank cylinder.

10. The self-adaptive buckling-restrained brace of claim 1, wherein: Through holes for the flow of damping liquid are formed in the energy dissipation baffles.

11. The self-adaptive buckling-restrained brace of claim 1, wherein: The first, second energy dissipation partition plates, the upper oil storage tank cylinder body, the lower oil storage tank cylinder body and the sealed cylinder cavity body are kept with a gap, the third energy dissipation partition plate and the inner side wall of the lower oil storage tank cylinder body are kept with a gap, or a damping through hole / damping groove for damping liquid flow is arranged.

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