CN110714546A - Self-adaptive buckling-restrained brace - Google Patents
Self-adaptive buckling-restrained brace Download PDFInfo
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- CN110714546A CN110714546A CN201911064320.2A CN201911064320A CN110714546A CN 110714546 A CN110714546 A CN 110714546A CN 201911064320 A CN201911064320 A CN 201911064320A CN 110714546 A CN110714546 A CN 110714546A
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- spring
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention discloses a self-adaptive buckling-restrained brace, which comprises a sealed cylinder cavity, wherein the top surface of the sealed cylinder cavity is open, an upper sealed end cylinder is arranged on the top surface, a hole matched with the radial dimension of a piston rod is formed in the center of the upper sealed end cylinder, the piston rod penetrates through the center hole of the upper sealed end cylinder and is partially arranged in the sealed cylinder cavity, an energy-consuming partition plate is arranged on the piston rod, and the energy-consuming partition plate is transversely sleeved on the piston rod and moves in the sealed cylinder cavity along with the movement of the piston rod; damping liquid is filled in the sealed cylinder cavity, and a spring is further installed in the sealed cylinder cavity. The damping fluid self-resetting energy-consuming device has the advantages that the energy-consuming partition plate moves along with the piston rod, the energy is consumed by shearing and extruding actions of the built-in upper oil storage tank cylinder body, the built-in lower oil storage tank limiting cylinder body and the energy-consuming partition plate on the damping fluid, the primary spring and the secondary spring are extruded and deformed to generate restoring force, the piston rod is driven to self-reset after the external force disappears, and the self performance can be automatically adjusted according to the change of the external excitation action.
Description
The technical field is as follows:
the invention relates to a damping device, belongs to the technical field of earthquake resistance and damping, and particularly relates to a multi-target self-adaptive high-efficiency energy-consumption self-resetting buckling-restrained brace.
Background art:
the passive structure damping control technology is the earliest damping control method in the field of civil engineering, and achieves great results in both theoretical research and practical engineering application. The passive damping control technology of the structure is that damping energy dissipation devices are installed at certain parts of the structure, and the dynamic response of the building structure under the action of an earthquake is reduced through the energy dissipation capacity of the damping energy dissipation devices. The passive damping control technology of the structure has the advantages of low manufacturing cost, simple structure, easy maintenance and no need of external energy, thereby having wide attention in the civil engineering field and being widely popularized and applied in actual engineering due to various advantages.
The invention relates to an anti-buckling support in the 70 s of the 20 th century, which becomes a means with mature technology and perfect standard in the field of structure passive damping control after more than 50 years of development, and is widely applied to various large engineering projects as an anti-lateral force energy dissipation damping device.
The buckling-restrained brace is used as a damping and energy-consuming device, dissipates earthquake energy through the elastic-plastic deformation of steel, can be applied to a lateral force resisting system of a multi-storey or high-rise building, and can also be applied to the reinforcing and reforming engineering of the existing building. When the structure is subjected to earthquake action, particularly rare earthquakes, the structure can generate large residual deformation, the safety of the structure under the subsequent aftershock action and the repair and use after the earthquake can be seriously influenced, and the excessive lateral deformation and the residual deformation of the structure under the strong earthquake action are direct reasons of structure collapse and damage. Therefore, the development of the buckling restrained brace having the self-resetting function is particularly important.
At present, the research aiming at the self-resetting buckling-restrained brace is in a starting stage, most of the existing self-resetting buckling-restrained brace devices have the problems of complex structure or high manufacturing cost, most of the existing self-resetting buckling-restrained brace devices consume energy through the friction action between internal components of the self-resetting buckling-restrained brace devices, the loss of internal pretightening force of the devices can be caused along with the change of external environmental factors such as temperature and the lapse of time, meanwhile, the devices deform in a reciprocating mode under the action of external force, the friction surface, the friction components and even the whole devices deform, the energy consumption capacity of the self-resetting buckling-restrained brace can be reduced or even lost due to the factors, and the reliability of the energy. Moreover, the existing self-resetting buckling-restrained brace has single product performance, mostly only aims at certain fixedly-used scenes and external conditions, and cannot make corresponding performance adjustment according to the change of the external excitation action suffered by the structure.
The invention aims to design a multi-target self-adaptive high-efficiency energy-consumption self-resetting buckling-restrained brace, so that a brace component not only has self-resetting capability, but also has stable and high-efficiency energy-consumption capability which is not influenced by external environmental factors and time factors, and meanwhile, the brace can change the mechanical property of the brace according to the change of the external excitation action suffered by the structure, so that the performance of the brace accords with the external force action characteristic suffered by the current structure. The problem of current from the poor engineering that is suitable for the scene singleness of reset support power consumption ability is solved.
The invention content is as follows:
aiming at a plurality of technical problems in the prior art, the invention is realized by the following technical scheme: a self-adaptive buckling-restrained brace comprises a sealed cylinder cavity, wherein the top surface of the sealed cylinder cavity is open, an upper sealed end cylinder is arranged on the top surface, a hole matched with the radial size of a piston rod is formed in the center of the upper sealed end cylinder, the piston rod penetrates through a center hole of the upper sealed end cylinder and is partially arranged in the sealed cylinder cavity, an energy-consuming partition plate is arranged on the piston rod, and the energy-consuming partition plate transversely penetrates through the piston rod and moves in the sealed cylinder cavity along with the movement of the piston rod; damping liquid is filled in the sealed cylinder cavity, and a spring is further installed in the sealed cylinder cavity.
In one embodiment, the energy dissipation partition is at least one piece.
In one embodiment, the energy dissipation partition plates are two, the first energy dissipation partition plate and the second energy dissipation partition plate are sequentially arranged in the downward direction of the piston rod, the first energy dissipation partition plate and the second energy dissipation partition plate are transversely and symmetrically arranged on the piston rod, flanges are arranged around the energy dissipation partition plates, the springs are double-layer springs, namely, the inner layer is a second-stage spring sleeved on the outer side of the piston rod, the outer layer is a first-stage spring sleeved on the outer side of the inner-stage spring, and the transverse sizes of the inner-layer spring and the outer-layer spring are smaller than the.
In one embodiment, the outer primary spring is a wave spring or a coil spring, and the inner secondary spring is a disc spring or a coil spring or a wave spring.
In one embodiment, a lower oil storage tank cylinder body is arranged at the lower part in the sealed cylinder cavity, a compression spring and a third energy dissipation partition plate are arranged in a space enclosed between the lower oil storage tank cylinder body and the sealed cylinder cavity, a flange is arranged around the third energy dissipation partition plate, the compression spring is sleeved on the outer side of the piston rod, the third energy dissipation partition plate is transversely and symmetrically arranged on the piston rod, the transverse size of the compression spring is smaller than the distance between the flanges of the third energy dissipation partition plate, and a through hole for damping oil to flow is formed in the top surface of the lower oil storage tank cylinder body; the third energy dissipation partition plate can cover the through hole in the stroke range.
In one embodiment, an upper reservoir cylinder is mounted in an upper portion of the sealed cylinder chamber.
In one embodiment, a lower seal connecting piece is connected to the lower part of the seal cylinder cavity, and an upper connecting piece is arranged on the top of the piston.
In one embodiment, two ends of the compression spring are connected between the lower oil storage tank limiting cylinder body and the inner bottom surface of the sealed cylinder cavity in a limiting mode, or two ends of the compression spring are free and free from connection, and the transverse position of the compression spring is limited by the flange of the third energy dissipation partition plate.
In one embodiment, the third dissipative partition is screwed on the bottom of the piston rod, and the third dissipative partition is locked by a nut.
In one embodiment, a through hole filled with damping fluid is formed in the bottom of the sealed cylinder cavity.
In one embodiment, the lower end of the inner spring abuts against the lower oil storage tank limiting cylinder body or the energy dissipation partition plate, and a gap is reserved between the upper end of the inner spring and the upper oil storage tank cylinder body or the energy dissipation partition plate; the outer spring lower extreme with down the spacing cylinder body of batch oil tank or the power consumption baffle butt, be close to the outer spring upper end of last batch oil tank cylinder body with go up between the batch oil tank cylinder body butt or leave the gap, and the gap is less than the gap is left to the inlayer spring.
In one embodiment, the top of the piston rod is a protrusion that abuts the upper reservoir cylinder.
In one embodiment, the energy dissipation partition plate is further provided with a through hole for the damping fluid to flow through and/or the flange of the energy dissipation partition plate is provided with a damping groove for the damping fluid to flow through.
In one embodiment, a gap is reserved between the first and second energy-consuming partition plates, the upper and lower oil storage tank cylinders and the sealed cylinder cavity, and a gap is reserved between the third energy-consuming partition plate and the inner side wall of the lower oil storage tank cylinder.
The invention mainly has the following advantages and beneficial effects:
1) when the whole support is pressed, the piston rod is pushed to move downwards by external pressure, the energy dissipation partition plate moves along with the piston rod, energy is dissipated through shearing and extrusion of the built-in upper oil storage tank cylinder body and the energy dissipation partition plate on damping liquid, the primary spring and the secondary spring are extruded and deformed to generate restoring force, and the piston rod is driven to perform self-resetting after external force disappears.
When the whole support is pulled, the piston rod is pulled by external pulling force to move in the direction away from the lower sealing connecting piece, the energy dissipation partition plate moves along with the piston rod and finally drives the built-in lower oil storage tank cylinder body to move together, energy is dissipated through shearing and extrusion effects of the built-in lower oil storage tank cylinder body and the energy dissipation partition plate on damping liquid, the primary spring and the secondary spring are extruded and deformed to generate restoring force, and the piston rod is driven to perform self-resetting after external force disappears.
Can guarantee through this design that whole supporting member no matter is under the effect of pressure or pulling force, damping canceling release mechanical system all can produce the restoring force, and the pushing member carries out from restoring to the throne, and built-in lower batch oil tank cylinder body can further restrict damping canceling release mechanical system's direction of motion, has spacing ability.
2) When the whole support is pressed, the piston rod is pushed by external force to move towards the lower sealing connecting piece, the protruding portion abuts against the built-in upper oil storage tank cylinder body, and the built-in upper oil storage tank cylinder body and the energy dissipation partition plate are driven to synchronously move.
When the whole structure is subjected to external excitation action (wind vibration, machine vibration, subway vibration, small vibration and the like), the structural deformation is small, the whole compression deformation of the component is small, the lower cylinder body extrudes the compression spring and the first-stage wave spring to be pressed into a working state, self-resetting restoring force is provided for the component, and the second-stage spring is still in a free state; when the structure suffers from external excitation increase (major earthquake, rare earthquake and the like), the structural deformation is increased, the whole compression deformation of the component is increased, the lower cylinder body extrudes the compression spring, the primary spring and the secondary spring to be pressed to enter a working state, the additional rigidity of the structure is increased, the deformation of the structure is reduced, and greater self-resetting restoring force is provided for the component.
When the whole support is pulled, the piston rod is pulled by external force to move towards the upper sealing end barrel, and the energy dissipation partition plate is driven to move along with the piston rod and finally drive the built-in lower oil storage tank limiting cylinder body to move together.
When the whole structure is subjected to external excitation action (wind vibration, machine vibration, subway vibration, small vibration and the like), the structural deformation is small, the whole member is subjected to small stretching deformation, the lower cylinder stretching and compressing spring and the first-stage wave spring are pressed to enter a working state to provide self-resetting restoring force for the member, and the second-stage spring is still in a free state; when the structure is subjected to external excitation increase (major earthquake, rare earthquake and the like), the structural deformation is increased, the overall tensile deformation of the component is increased, the lower cylinder body tensile compression spring, the primary spring and the secondary spring are all pressed to enter a working state, the additional rigidity of the structure is increased, the deformation of the structure is reduced, and greater self-resetting restoring force is provided for the component.
3) Through the wide flange structural design of the energy dissipation partition plate, the shearing area of the damping fluid between the energy dissipation partition plate and the sealing cylinder body can be enlarged, the energy dissipation capacity is increased, and the effect of fixing the transverse position of the primary spring can be achieved.
Through the wide flange structural design of the energy dissipation partition plate, the shearing area of damping fluid between the energy dissipation partition plate and the inner wall of the cylinder body of the built-in lower oil storage tank can be enlarged, and the fixing and limiting effects on the lower cylinder body stretching compression spring and the lower cylinder body extruding compression spring can be achieved.
The built-in upper oil storage tank cylinder body and the built-in long cylinder body of the lower oil storage tank limiting cylinder body can increase the shearing area of damping fluid between the upper oil storage tank cylinder body and the sealing cylinder body, increase the energy consumption capacity, and limit the overall movement direction of the middle damping mechanism to play a limiting role.
4) Damping fluid is supplied to circulate among the built-in upper oil storage tank cylinder body, the energy-consuming fixed partition plate and the built-in lower oil storage tank limiting cylinder body through the damping holes/damping grooves, and the energy-consuming capability and the deformation coordination of the supporting member can be improved.
5) When the supporting component is pressed, damping fluid automatically circulates and adjusts among 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 a reserved circulation hole of the built-in lower oil storage tank limiting cylinder body; when the supporting member is pulled, damping fluid automatically circulates and adjusts among the built-in upper oil storage tank cylinder body, the inside of the sealing cylinder body and the built-in lower oil storage tank limiting cylinder body through a shearing 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 self-resetting buckling restrained brace with the multiple targets, self-adaption and high-efficiency energy consumption can provide certain energy consumption capacity through friction force between all parts inside the self-resetting buckling restrained brace when the self-resetting buckling restrained brace is subjected to tension/compression deformation and acting force between the spring member and the damping liquid.
6) The core components of the upper sealing end barrel and the internal multistage self-adaptive energy-consumption self-resetting fixing frame structure in the multi-target self-adaptive high-efficiency energy-consumption self-resetting buckling-restrained brace component can be detached, all the components can be subjected to standardized batch processing in a factory, and the component is mainly assembled and fixed by threads or high-strength bolts.
7) The invention utilizes the multi-target self-adaptive high-efficiency energy-consumption self-resetting buckling-restrained brace, solves the problems of weak energy-consumption capability, low reliability and single application scene of the self-resetting bracing member, fully exerts the energy-consumption capability and the self-resetting capability of the buckling-restrained brace, can adjust the rigidity and the self-resetting capability of the member according to the change of external excitation conditions, automatically adjusts and adapts to the current external excitation conditions, and further strengthens the safety of the structure under the combined excitation action of wind vibration, subway vibration, machine vibration and earthquake.
Description of the drawings:
FIG. 1 is a schematic view of the overall structure of an adaptive buckling restrained brace in a first embodiment;
FIG. 2 is a schematic diagram illustrating a deformation of the adaptive buckling restrained brace during a stage of operation under stress according to the first embodiment;
FIG. 3 is a schematic diagram illustrating the deformation of the first embodiment of the adaptive buckling restrained brace during two stages of operation under stress;
FIG. 4 is a schematic diagram illustrating a deformation of the first embodiment of the adaptive anti-buckling support during a phase of tensile force;
FIG. 5 is a schematic diagram illustrating the deformation of the first embodiment of the adaptive buckling restrained brace in two stages under the action of tensile force;
FIG. 6 shows a schematic diagram of the overall structure of the adaptive buckling restrained brace in the second embodiment;
fig. 7 discloses a schematic structural diagram of the adaptive buckling restrained brace in the third embodiment.
The corresponding part names indicated by the numbers in the figures: 1. an upper connecting piece; 2. a piston rod; 3. an upper sealed end cartridge; 4. damping fluid; 5. sealing the cylinder cavity; 6. a through hole; 7. a lower seal connection; 8. a nut; 9. compressing the compression spring; 10. a third energy dissipating partition; 11. stretching the compression spring; 12. the lower oil storage tank limits the cylinder body; 13. a second energy dissipating partition; 14. a primary spring; 15. a secondary spring; 16. an upper oil storage tank body; 17. a piston rod protrusion; 18. a through hole; 19. a through hole; 20. a first energy dissipating partition; 21. and the flange of the energy dissipation clapboard.
The specific implementation mode is as follows:
the above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings in which like reference numerals denote like features throughout the several views, wherein:
referring to fig. 1 in conjunction with fig. 2-7, fig. 1 discloses a schematic structural diagram of an adaptive buckling restrained brace in a first embodiment. In the embodiment of fig. 1, the adaptive buckling restrained brace comprises a sealed cylinder cavity 5, wherein the top surface of the sealed cylinder cavity 5 is open, an upper sealed end cylinder 3 is installed on the top surface, a hole matched with the radial dimension of a piston rod is formed in the center of the upper sealed end cylinder 3, the piston rod 2 penetrates through a central hole of the upper sealed end cylinder 3 and is partially installed in the sealed cylinder cavity 5, an energy dissipation partition plate penetrates through the piston rod 2, and the energy dissipation partition plate is transversely connected to the piston rod 2 and moves in the sealed cylinder cavity 5 along with the movement of the piston rod 2; the sealed cylinder cavity 5 is filled with damping liquid 4, and the sealed cylinder cavity 5 is also provided with a spring.
Preferably, the energy dissipation partition plates are at least two, a first energy dissipation partition plate 20 and a second energy dissipation partition plate 13 are sequentially arranged along the downward direction of the piston rod 2, the first energy dissipation partition plate and the second energy dissipation partition plate are transversely and symmetrically arranged on the piston rod 2, flanges 21 are arranged around the energy dissipation partition plates, the springs are double-layer springs, namely, an inner-layer secondary spring 15 is sleeved on the outer side of the piston rod 2, an outer-layer primary spring 14 is sleeved on the outer side of the inner-layer secondary spring 15, and the transverse sizes of the primary springs and the secondary springs are smaller than the distance between the flanges on two.
Preferably, the outer primary spring 14 is a wave spring or a coil spring, and the inner secondary spring 15 is a disc spring or a coil spring or a wave spring.
Preferably, a lower oil storage tank cylinder body 12 is installed at the lower part in the sealed cylinder cavity 5, an extrusion compression spring 9, a tension compression spring 11 and a third energy consumption partition plate 10 are installed in a space enclosed between the lower oil storage tank cylinder body 12 and the sealed cylinder cavity 5, flanges are arranged around the third energy consumption partition plate 10, the compression springs 9 and 11 are sleeved on the outer side of the piston rod 2, the third energy consumption partition plate 10 is transversely and symmetrically installed on the piston rod 2, the transverse sizes of the extrusion compression spring 9 and the tension compression spring 11 are smaller than the distance between the inner sides of the flanges of the third energy consumption partition plate 10, and a through hole 6 for damping oil to flow is formed in the top surface of the lower oil storage tank limiting cylinder body 12; the third dissipative baffle 10 covers the through-hole in the stroke range.
Preferably, an upper reserve tank cylinder 16 is installed at an upper portion inside the sealed cylinder chamber 5.
Preferably, a lower sealing joint 7 is attached down the sealing cylinder chamber 5 and the upper joint 1 is mounted on top of the piston.
Preferably, two ends of the compression springs 9 and 11 are connected between the lower oil storage tank limiting cylinder body 12, the third dissipative baffle 10 and the inner bottom surface of the sealed cylinder cavity 5 in a limiting manner, or two ends of the compression springs 9 and 11 are free and unconnected, and the transverse positions of the compression springs 9 and 11 are limited by the flange of the third dissipative baffle 10.
Preferably, a third dissipative partition 10 is screwed on the bottom of the piston rod 2, locking the third dissipative partition 10 by a nut 8.
Preferably, a through hole 19 filled with the damping fluid 4 is opened in the bottom of the sealed cylinder chamber 5.
Preferably, the upper end of the primary spring 14 abuts the upper reservoir cylinder 16 or the dissipative barrier; the lower end of the secondary spring 15 is abutted against the lower oil storage tank body 12 or the energy dissipation partition plate.
Preferably, the top of the piston rod 2 is a protrusion 17, and the protrusion 17 abuts against the upper reservoir cylinder 16.
Preferably, the dissipative baffle is further provided with a through hole 18 (refer to fig. 7) for the damping fluid to flow through.
Preferably, a gap is reserved between the first energy-consuming partition, the second energy-consuming partition, the upper oil storage tank cylinder 16 and the lower oil storage tank cylinder 12 and the sealed cylinder cavity 5, and a gap is reserved between the third energy-consuming partition 10 and the inner side wall of the lower oil storage tank cylinder 12.
In a first embodiment, the invention provides a multi-target self-adaptive high-efficiency energy-consumption self-resetting buckling restrained brace, wherein a sealing cylinder cavity 5 can be filled with damping fluid 4, and the damping fluid 4 can be viscous damping fluid, damping oil and the like; the sealing cylinder cavity 5 can be divided into integral or bottom reserved filling holes or split type sealing; the upper sealing end cylinder 3 and the lower sealing connecting piece 7 can be respectively arranged at two ends of the sealing cylinder cavity 5, and the piston rod 2 is arranged in the upper sealing end cylinder 3 in a penetrating way; the upper end of the piston rod 2 is fixedly connected with an upper connecting piece 1, and the upper connecting piece 1 and a lower sealing connecting piece 7 are respectively and fixedly connected with the top end of the piston rod 2 and the bottom end of the sealing cylinder cavity 5; the bottom of the sealed cylinder cavity 5 can be provided with a filling hole 19 for injecting the damping liquid 4 into the inner cavity of the sealed cylinder.
The piston rod 2 is sleeved with a built-in upper oil storage tank cylinder body 16 and a built-in lower oil storage tank limiting cylinder body 12, the built-in upper oil storage tank cylinder body 16 and the built-in lower oil storage tank cylinder body 12 are respectively abutted against the upper sealing end barrel 3 and the sealing cylinder cavity 5, the opening of the built-in lower oil storage tank limiting cylinder body 12 faces the lower sealing connecting piece 7, a gap for the damping liquid 4 to flow is reserved between the built-in upper oil storage tank cylinder body 16, the built-in lower oil storage tank limiting cylinder body 12 and the inner wall of the sealing cylinder cavity 5, and/or a flow groove for the damping liquid 4 to flow is formed in the side wall. The piston rod 2 is provided with a protruding part 17 on the side wall near the direction of the upper sealed end cylinder 3, the outer side wall of the protruding part 17 can be arranged in a circular shape, the protruding part 17 can be arranged on the upper sealed end cylinder 3 in a penetrating way and is abutted against the built-in upper oil storage tank cylinder body 16, and the protruding part 17 and the upper sealed end cylinder 3 are sealed. One end of the piston rod 2 facing the lower sealing connector 7 is connected with a third energy-consuming partition plate 10 through threads, the third energy-consuming partition plate 10 is located inside a built-in lower oil storage tank limiting cylinder body 12, the piston rod 2 is connected with a nut 8 in a butt joint mode with the third energy-consuming partition plate 10 through threads, and the nut 8 is in butt joint with the end face, facing the lower sealing connector 7, of the third energy-consuming partition plate 10. The space between the built-in upper oil storage tank cylinder body 16, the sealed cylinder cavity 5 and the upper sealed end tube 3 constitutes an upper oil storage tank, and the space between the built-in lower oil storage tank cylinder body 12 and the sealed cylinder cavity 5 constitutes a lower oil storage tank. A multi-target self-adaptive damping energy dissipation self-resetting mechanism composed of springs and energy dissipation partition plates is arranged between the built-in upper oil storage tank cylinder body 16 and the built-in lower oil storage tank cylinder body 12, and damping liquid 4 automatically adjusts and circulates among the built-in lower oil storage tank cylinder body 12, the multi-target self-adaptive damping energy dissipation self-resetting mechanism and the built-in upper oil storage tank cylinder body 16.
Under the action of pressure, the self-adaptive buckling-restrained brace pushes the piston rod 2 to move towards the lower sealing connecting piece 7 by external force, the protruding portion 17 abuts against the built-in upper oil storage tank cylinder body 16 and drives the built-in upper oil storage tank cylinder body 16 and the third energy-consumption partition plate 10 to synchronously move, and the shearing action and the extrusion action on the damping fluid 4 between the built-in upper oil storage tank cylinder body 16, the first energy-consumption fixing partition plate 20, the second energy-consumption fixing partition plate 13 and the sealing cylinder cavity 5 and between the built-in lower oil storage tank cylinder body 12 and the third energy-consumption partition plate 10 play an energy-consumption effect. When the whole building structure is subjected to external excitation action (such as wind vibration, machine vibration, subway vibration, small vibration and the like), the structural deformation is small, the whole compression deformation of the component is small, the lower cylinder body extrudes the compression spring 9 and the primary spring 14 to be pressed into a working state, self-resetting restoring force is provided for the component, and the secondary spring 15 is still in a free state; when the structure is subjected to external excitation increase (major earthquake, rare earthquake and the like), the structural deformation is increased, the whole compression deformation of the component is increased, the lower cylinder body extrudes the compression spring 9, the primary spring 14 and the secondary spring 15 to be pressed into a working state, the additional rigidity of the structure is increased, the deformation of the structure is reduced, and greater self-resetting restoring force is provided for the component.
When the integral component is pulled, the piston rod 2 is pulled by external force to move towards the upper sealing end barrel 3, and the lower limiting locking energy-consuming partition plate 10 is driven to move towards the direction of the inner lower oil storage tank limiting cylinder body 12 and finally move together, and the energy-consuming effect is achieved on the shearing action and the extrusion action of the damping fluid 4 between the built-in lower oil storage tank limiting cylinder body 12, the first energy-consuming fixed partition plate 20, the second energy-consuming fixed partition plate 13 and the sealing cylinder body 5 and between the built-in lower oil storage tank limiting cylinder body 12 and the lower limiting locking energy-consuming partition plate 10; when the whole structure is subjected to external excitation action (wind vibration, machine vibration, subway vibration, small vibration and the like), the structural deformation is small, the whole member is subjected to small stretching deformation, the lower cylinder stretching and compressing spring 11 and the first-stage spring 14 are pressed to enter a working state to provide self-resetting restoring force for the member, and the second-stage spring 15 is still in a free state; when the structure is subjected to external excitation increase (major earthquake, rare earthquake and the like), the structural deformation is increased, the overall tensile deformation of the component is increased, the lower cylinder body tensile compression spring 11, the primary spring 14 and the secondary spring 15 are all pressed to enter a working state, the additional rigidity of the structure is increased, the deformation of the structure is reduced, and greater self-resetting restoring force is provided for the component.
The multi-target self-adaptive damping energy dissipation self-resetting mechanism in the supporting member can ensure that the whole supporting member is in a stressed state no matter under the action of tension or stress, and can correspondingly and automatically change the mechanical property according to different external forces, thereby providing the self-resetting restoring force and the stable energy dissipation capability for the member.
The top of the built-in lower oil storage tank limiting cylinder body 12 is provided with a circulation hole 6. In the initial state, the lower limit locking energy consumption clapboard 10 does not cover and close the circulation hole 6. Under the tensioned state of the support, the support member is less deformed in tension, the lower limit locking energy-consuming partition plate 10 does not cover and close the circulation hole 6 under the working state of the primary spring 14 and the lower cylinder body tension compression spring 11, the damping fluid 4 mainly performs circulation regulation inside the support member through the circulation hole 6, and energy is consumed by the shearing action and the extrusion action of the lower limit locking energy-consuming partition plate 10 and the limit cylinder body 12 of the built-in lower oil storage tank, the first energy-consuming fixed partition plate 20, the second energy-consuming fixed partition plate 13, the limit cylinder body 12 of the built-in lower oil storage tank and the sealing cylinder cavity 5 on the damping fluid 4; the supporting member is further pulled, the supporting member is pulled to deform and increase, the secondary spring 15 enters a working state, the flange of the lower limiting locking energy dissipation partition plate 10 is abutted to the bottom surface of the limiting cylinder body 12 of the built-in lower oil storage tank, the circulation hole 6 is covered and closed, the lower limiting locking energy dissipation partition plate 10 and the limiting cylinder body 12 of the built-in lower oil storage tank move together, the damping fluid 4 flows and is adjusted inside the supporting member through a gap between the limiting cylinder body 12 of the built-in lower oil storage tank and the sealing cylinder cavity 5, and energy is dissipated by means of shearing action and extrusion action of the damping fluid 4 between the limiting cylinder body 12 of the built-in lower oil storage tank and the first energy dissipation fixed partition plate 20, and the second energy. When the supporting member is pressed, the lower limiting locking energy-consuming partition plate 10 does not cover the closed circulation hole 6, the damping fluid 4 is mainly circulated and adjusted in the supporting member through the circulation hole 6, and energy is consumed by the shearing action and the extrusion action of the damping fluid 4 among the lower limiting locking energy-consuming partition plate 10, the lower oil storage tank limiting cylinder body 12, the built-in upper oil storage tank cylinder body 16, the first energy-consuming fixed partition plate 20, the second energy-consuming fixed partition plate 13 and the sealing cylinder cavity 5. The friction force between each part of the multi-target self-adaptive high-efficiency energy-consumption self-resetting buckling-restrained brace can also provide certain energy-consumption capability when the brace deforms.
The side wall of the cylinder body of the built-in lower oil storage tank limiting cylinder body 12 can further limit the motion direction of the multi-target self-adaptive damping energy consumption self-resetting mechanism, and has limiting capacity; the wide flange structure of the third dissipative clapboard 10, the first dissipative fixed clapboard 20 and the second dissipative clapboard 13 can not only improve the dissipative capacity of the support member, but also play a role in fixing the position of the spring part. The initial assembly gap of the primary spring 14 which may occur during assembly can be reduced by the first energy consumption fixing partition plate 20 and the second energy consumption fixing partition plate 13.
The multi-target self-adaptive damping energy consumption self-resetting mechanism comprises a plurality of energy consumption partition plates sleeved on the piston rod 2, primary springs 14 and secondary springs 15, wherein the primary springs 14 and the secondary springs 15 are arranged on two sides of the energy consumption fixing partition plates, the specific number of the energy consumption partition plates is determined by calculation according to actual conditions, the primary springs 14 can be wave springs or spiral springs and the like, and the secondary springs 15 can be disc springs, wave springs, spiral springs and the like. When the disc spring and the wave spring are adopted as the self-resetting element, the bearing capacity and the deformation required by the supporting member can be assembled through different combinations of the overlapping, involution or mixing of the springs.
The second embodiment is different from the first embodiment in that a gap is reserved between the primary spring 14 and the built-in upper oil storage tank cylinder 16 (refer to fig. 6), the multi-target self-adaptive high-efficiency energy-consuming self-resetting buckling restrained brace is divided into 3 different working stages according to external excitation and deformation conditions borne by the structure, and automatic adjustment can be performed according to changes of the external excitation, so that the performance of the multi-target self-adaptive high-efficiency energy-consuming self-resetting buckling restrained brace can adapt to current external excitation conditions. In the first stage, when the structure is subjected to environmental vibration (wind vibration, machine vibration, subway vibration and the like), the deformation of the multi-target self-adaptive high-efficiency energy-consumption self-resetting buckling-restrained brace is very small, the structure and the brace do not need to be provided with self-resetting force, neither the primary spring 14 nor the secondary spring 15 enters a working state, the brace member mainly takes energy consumption as a main part, and the power response of the building structure is reduced through the energy consumption of the brace member; in the second stage, when the structure is subjected to a small earthquake or a medium earthquake, the deformation of the multi-target self-adaptive high-efficiency energy-consumption self-resetting buckling-restrained brace is increased, the primary spring 14 enters a working state, the secondary spring 15 does not enter the working state, the building structure is still in an elastic stage, only small self-resetting capacity is required to be provided, the energy consumption capacity of the brace member is further improved, and the dynamic response of the structure can be further reduced; and in the third stage, when the structure suffers a major earthquake or a rare earthquake, the deformation of the multi-target self-adaptive high-efficiency energy-consumption self-resetting buckling-restrained brace is further increased, the primary spring 14 and the secondary spring 15 both enter a working state, the building structure is greatly deformed and even the structure is damaged, the large self-resetting restoring force needs to be provided, the self-resetting capability can be further improved through the cooperative work of the primary spring 14 and the secondary spring 15, the energy consumption capability of the brace member is further improved along with the deformation and the speed increase, and the dynamic response of the building structure can be reduced through the improvement of the energy consumption capability.
The third embodiment is different from the first embodiment in that (refer to fig. 7), a damping hole 18 for allowing the damping fluid 4 to flow is formed in the built-in upper oil storage tank cylinder 16, the built-in first energy consumption fixing partition plate 20, the built-in second energy consumption fixing partition plate 13 and the built-in lower oil storage tank limiting cylinder 12, and a gap is formed between the built-in upper oil storage tank cylinder 16, the built-in first energy consumption fixing partition plate 20, the built-in second energy consumption fixing partition plate 13 and the built-in lower oil storage tank limiting cylinder 12 and the inner wall of the sealed cylinder cavity 5 or the inner wall of the sealed cylinder cavity 5. The damping fluid 4 can flow among the built-in upper oil storage tank cylinder body 16, the first energy consumption fixing partition plate 20, the second energy consumption fixing partition plate 13 and the built-in lower oil storage tank limiting cylinder body 12 through the damping hole 18, the shear extrusion function of the damping fluid 4 is achieved, and the energy consumption capability and the self-resetting capability of the supporting component are improved.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (14)
1. The utility model provides a self-adaptation buckling restrained brace which characterized in that: the piston rod penetrates through a center hole of the upper sealing end cylinder and is partially arranged in the sealing cylinder cavity, an energy consumption partition plate is arranged on the piston rod, and the energy consumption partition plate is transversely sleeved on the piston rod and moves in the sealing cylinder cavity along with the movement of the piston rod; damping liquid is filled in the sealed cylinder cavity, and a spring is further installed in the sealed cylinder cavity.
2. The adaptive buckling restrained brace of claim 1, wherein: the energy dissipation partition plate is at least one.
3. The adaptive buckling restrained brace of claim 2, wherein: the energy dissipation partition plate comprises two energy dissipation partition plates, a first energy dissipation partition plate and a second energy dissipation partition plate are sequentially arranged in the downward direction of a piston rod, the first energy dissipation partition plate and the second energy dissipation partition plate are transversely and symmetrically installed on the piston rod, flanges are arranged on the periphery of the energy dissipation partition plates, springs are double-layer springs, namely, an inner-layer secondary spring is sleeved on the outer side of the piston rod, an outer-layer primary spring is sleeved on the outer side of an inner-layer secondary spring, and the transverse size of the primary spring and the transverse size of the secondary spring are smaller than.
4. The adaptive buckling restrained brace of claim 2, wherein: the outer layer primary spring is a wave spring or a spiral spring, and the inner layer secondary spring is a disc spring or a spiral spring or a wave spring.
5. The adaptive buckling restrained brace of claim 4, wherein: a lower oil storage tank limiting cylinder body is arranged at the lower part in the sealed cylinder cavity, a space enclosed between the lower oil storage tank limiting cylinder body and the sealed cylinder cavity forms a lower oil storage tank, a compression spring and a third energy dissipation partition plate are arranged in the lower oil storage tank limiting cylinder body, flanges are arranged around the third energy dissipation partition plate, the compression spring is sleeved outside a piston rod, the third energy dissipation partition plate is transversely and symmetrically arranged on the piston rod, the transverse size of the compression spring is smaller than the distance between the flanges of the third energy dissipation partition plate, and a through hole for the circulation of damping fluid is formed in the top surface of the lower oil storage tank cylinder body; the third energy dissipation partition plate can cover the through hole in the stroke range.
6. The adaptive buckling restrained brace of claim 5, wherein: the upper part in the sealed cylinder cavity is provided with an upper oil storage tank cylinder body, and the upper oil storage tank is formed by the upper oil storage tank cylinder body, the sealed cylinder cavity and the space between the upper sealed end barrel.
7. The adaptive buckling restrained brace of claim 6, wherein: the sealing cylinder cavity is connected with a lower sealing connecting piece downwards, and the top of the piston is provided with an upper connecting piece.
8. The adaptive buckling restrained brace of claim 5, wherein: the two ends of the compression spring are connected between the lower oil storage tank cylinder body and the inner bottom surface of the sealed cylinder cavity in a limiting mode, or the two ends of the compression spring are free and not connected, and the transverse position of the compression spring is limited by the flange of the third energy-consuming partition plate.
9. The adaptive buckling restrained brace of claim 8, wherein: the third energy-consuming partition plate is in threaded connection with the bottom of the piston rod and is locked through a nut.
10. The adaptive buckling restrained brace of claim 1, wherein: and a through hole filled with damping liquid is formed at the bottom of the sealed cylinder cavity.
11. The adaptive buckling restrained brace of claim 5, wherein: the lower end of the inner spring is abutted against the lower oil storage tank limiting cylinder body or the energy dissipation partition plate, and a gap is reserved between the upper end of the inner spring and the upper oil storage tank cylinder body or the energy dissipation partition plate; the outer spring lower extreme with down the spacing cylinder body of batch oil tank or the power consumption baffle butt, be close to the outer spring upper end of last batch oil tank cylinder body with go up between the batch oil tank cylinder body butt or leave the gap, and the gap is less than the gap is left to the inlayer spring.
12. The adaptive buckling restrained brace of claim 5, wherein: the top of the piston rod is a protruding part which is abutted against the upper oil storage tank body.
13. The adaptive buckling restrained brace of claim 1, wherein: the energy dissipation partition plate is also provided with a through hole for the circulation of damping fluid.
14. The adaptive buckling restrained brace of claim 3, wherein: the first energy-consuming partition plate, the second energy-consuming partition plate, the upper oil storage tank cylinder body, the lower oil storage tank cylinder body and the sealing cylinder cavity are reserved with gaps, and the third energy-consuming partition plate and the inner side wall of the lower oil storage tank cylinder body are reserved with gaps or provided with damping through holes/damping grooves for damping fluid to flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911064320.2A CN110714546A (en) | 2019-11-04 | 2019-11-04 | Self-adaptive buckling-restrained brace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911064320.2A CN110714546A (en) | 2019-11-04 | 2019-11-04 | Self-adaptive buckling-restrained brace |
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| CN110714546A true CN110714546A (en) | 2020-01-21 |
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|---|---|---|---|
| CN201911064320.2A Pending CN110714546A (en) | 2019-11-04 | 2019-11-04 | Self-adaptive buckling-restrained brace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392163A (en) * | 2020-11-20 | 2021-02-23 | 广州大学 | Multistage self-recovery type energy dissipation support and energy dissipation method thereof |
| CN112982710A (en) * | 2021-03-04 | 2021-06-18 | 上海市建筑科学研究院有限公司 | Assembled self-resetting buckling-restrained brace with locking function |
| CN113027211A (en) * | 2021-03-17 | 2021-06-25 | 重庆科技学院 | Energy consumption device based on compressive yielding or buckling deformation control and working method |
| CN113882239A (en) * | 2021-10-08 | 2022-01-04 | 中国民航大学 | Self-reset multistage variable-rigidity viscous damper |
-
2019
- 2019-11-04 CN CN201911064320.2A patent/CN110714546A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392163A (en) * | 2020-11-20 | 2021-02-23 | 广州大学 | Multistage self-recovery type energy dissipation support and energy dissipation method thereof |
| CN112982710A (en) * | 2021-03-04 | 2021-06-18 | 上海市建筑科学研究院有限公司 | Assembled self-resetting buckling-restrained brace with locking function |
| CN113027211A (en) * | 2021-03-17 | 2021-06-25 | 重庆科技学院 | Energy consumption device based on compressive yielding or buckling deformation control and working method |
| CN113882239A (en) * | 2021-10-08 | 2022-01-04 | 中国民航大学 | Self-reset multistage variable-rigidity viscous damper |
| CN113882239B (en) * | 2021-10-08 | 2023-03-14 | 中国民航大学 | Self-reset multistage variable-rigidity viscous damper |
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