CN211851139U - Viscoelastic friction type energy-consumption self-resetting buckling-restrained brace - Google Patents
Viscoelastic friction type energy-consumption self-resetting buckling-restrained brace Download PDFInfo
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- CN211851139U CN211851139U CN202020023436.3U CN202020023436U CN211851139U CN 211851139 U CN211851139 U CN 211851139U CN 202020023436 U CN202020023436 U CN 202020023436U CN 211851139 U CN211851139 U CN 211851139U
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Abstract
The utility model provides a viscoelastic friction type power consumption is from restoring to throne buckling restrained brace, include: the energy-saving friction device comprises an upper fixed cylinder, a lower fixed cylinder, a fixed guide plate, a piston rod, a fixed end plate, a spring, a first viscoelastic energy-consuming component, a second viscoelastic energy-consuming component, a first friction structure and a second friction structure; two ends of the fixed guide plate are respectively inserted and fixed in the upper fixed cylinder and the lower fixed cylinder; the piston rod is arranged between the upper fixed cylinder and the lower fixed cylinder; the first viscoelastic energy consumption assembly and the second viscoelastic energy consumption assembly are respectively sleeved at two ends of the piston rod; the spring is arranged between the first viscoelastic energy consumption assembly and the second viscoelastic energy consumption assembly; the first end of the piston rod limits the first viscoelastic energy consumption assembly; the fixed end plate limits the second viscoelastic energy dissipation assembly. The utility model discloses a viscoelastic friction type power consumption is from restoring to throne buckling restrained brace has from the ability of restoring to throne to can carry out automatically regulated according to supporting the atress deformation characteristic, prevent to support the destruction of inner member, have and stabilize efficient power consumption ability.
Description
Technical Field
The utility model relates to an antidetonation, shock attenuation technical field especially relate to a viscoelastic friction type power consumption is from restoring to throne buckling restrained brace.
Background
The structure passive damping control technology is used as a damping control means in the field of civil engineering, and great achievements are obtained in the aspects of theoretical research and practical engineering application. The basic principle of the structure passive damping control technology is to install damping and energy dissipating devices in a building structure, and dissipate energy input into the building through the damping and energy dissipating devices to reduce the dynamic response of the structure. The passive damping control technology of the structure has the characteristics of low manufacturing cost and simple structure, does not need external energy, is easy to maintain, and has small failure probability under the disaster conditions of earthquakes and the like, thereby gaining wide attention in the civil engineering field and being widely popularized and applied in actual engineering.
As structural damping control technology has developed, many forms of combinations of damping members and structural types have been developed. The buckling-restrained brace dissipates seismic energy through elastic-plastic deformation of the buckling-restrained brace, and is widely applied to various large engineering projects as a damping and energy-consuming device with mature technology and perfect standard after long-term development. The viscoelastic damper has simple structure and reliable performance, can provide additional rigidity and energy consumption capability for the structure, can effectively reduce the wind vibration and earthquake reaction of the structure, and has wide engineering applicability.
When the structure is subjected to the over-design-standard earthquake action, the structure can generate large residual deformation, the structure can be seriously influenced in the subsequent aftershock action and the post-earthquake repair process, and the structure can collapse and be damaged due to the excessive lateral deformation and the residual deformation of the structure under the action of strong earthquake, so that the life and property safety of people is seriously influenced. Therefore, the research on the buckling restrained brace member with stable and efficient energy consumption capability and self-resetting function has important significance.
At present, research on self-resetting buckling restrained braces is relatively few, the self-resetting function of the existing self-resetting buckling restrained braces is mostly realized by a shape memory alloy material, the mechanical property of the shape memory alloy is greatly influenced by external temperature and other environmental factors, the manufacturing cost is high, and the self-resetting buckling restrained braces are difficult to popularize and apply in practical engineering. Compared with metal energy consumption devices and friction energy consumption devices, the viscoelastic damper can play an energy consumption role without generating large relative displacement to generate yield deformation or overcoming static friction force, energy consumption can be performed under all vibration conditions, but the deformation amplitude of the viscoelastic damper is limited, when the viscoelastic damper is excessively deformed, the viscoelastic material can be damaged to cause the damper to lose efficacy, although the deformation amplitude of the viscoelastic damper can be increased by increasing the thickness of the viscoelastic material, the energy consumption capacity can be reduced.
Disclosure of Invention
To the not enough among the above-mentioned prior art, the utility model provides a viscoelastic friction type power consumption is from restoring to throne buckling restrained brace not only has from the ability of restoring to throne, can carry out automatically regulated according to supporting atress deformation characteristic moreover, prevents to support the destruction of internal part, has stable efficient power consumption ability, has solved current from restoring to throne the device power consumption ability and from the poor problem of ability stability of restoring to throne.
In order to achieve the above object, the utility model provides a viscoelastic friction type power consumption is from restoring to throne buckling restrained brace, include: the energy-saving damper comprises an upper fixed cylinder, a lower fixed cylinder, at least one fixed guide plate, a piston rod, a fixed end plate, at least one spring, a first viscoelastic energy-consuming component, a second viscoelastic energy-consuming component, at least one first friction structure, at least one second friction structure, an upper connecting piece and a lower connecting piece; a first through hole is formed in the middle of the top surface of the upper fixed cylinder, two ends of the fixed guide plate are respectively inserted into the upper fixed cylinder and the lower fixed cylinder and are fixedly connected in the upper fixed cylinder and the lower fixed cylinder, and the fixed guide plate is parallel to the axis of the first through hole; the piston rod is arranged between the upper fixed cylinder and the lower fixed cylinder along the axis, and the first end of the piston rod penetrates out of the first through hole; the first viscoelastic energy consumption assembly and the second viscoelastic energy consumption assembly are respectively sleeved at two ends of the piston rod, the first viscoelastic energy consumption assembly is connected with the upper fixed barrel through the first friction structure, and the second viscoelastic energy consumption assembly is connected with the lower fixed barrel through the second friction structure; the spring is arranged between the first viscoelastic energy consumption assembly and the second viscoelastic energy consumption assembly; the first end of the piston rod limits the first viscoelastic energy consumption assembly and is connected with the upper connecting piece; the second end of the piston rod is connected with the fixed end plate, and the fixed end plate limits the second viscoelastic energy consumption assembly; the lower fixed cylinder is connected with the lower connecting piece.
Preferably, the first viscoelastic energy dissipation assembly comprises an inner viscoelastic upper barrel, at least one first viscoelastic body and at least one inner friction upper limiting plate; the inner viscoelastic upper barrel is sleeved outside the piston rod, and the inner friction upper limiting plate is connected with the upper fixed barrel through the first friction structure; the first viscoelastic body is bonded between the inner viscoelastic upper barrel and the inner friction upper limiting plate, one end of the inner friction upper limiting plate, which is far away from the upper fixed barrel, protrudes inwards to form at least one first limiting protruding part, and the first limiting protruding part limits the inner viscoelastic upper barrel;
the second viscoelastic energy consumption assembly comprises an inner viscoelastic lower barrel, at least one second viscoelastic body and at least one inner friction lower limiting plate; the inner viscoelastic lower barrel is sleeved outside the piston rod, and the inner friction lower limiting plate is connected with the lower fixed barrel through the second friction structure; the second viscoelastic body is bonded between the inner viscoelastic lower tube and the inner friction lower limiting plate, one end, far away from the lower fixed tube, of the inner friction lower limiting plate protrudes inwards to form at least one second limiting protruding part, and the second limiting protruding part limits the inner viscoelastic lower tube.
Preferably, the first friction structure comprises a first friction assembly and a second friction assembly, the first friction assembly comprises the inner friction upper limiting plate and at least one upper friction plate; the second friction assembly comprises the fixed guide plate and the side wall of the upper fixed cylinder; the inner friction upper limiting plate, the fixed guide plate, the upper friction plate and the side wall of the upper fixed cylinder are sequentially stacked; the fixed guide plate is provided with at least one first long hole, and the upper friction plate is provided with at least one second long hole; the inner friction upper limiting plate and the upper friction plate are fixed through bolt threads penetrating through the first long hole; the fixed guide plate and the side wall of the upper fixed cylinder are fixed in a threaded manner through bolts penetrating through the second long holes;
the second friction structure comprises a third friction assembly and a fourth friction assembly, and the third friction assembly comprises the inner friction lower limiting plate and at least one lower friction plate; the fourth friction assembly comprises the fixed guide plate and the side wall of the lower fixed cylinder; the inner friction lower limiting plate, the fixed guide plate, the lower friction plate and the side wall of the lower fixed cylinder are sequentially stacked; the fixed guide plate is provided with at least one third long hole, and the lower friction plate is provided with at least one fourth long hole; the inner friction lower limiting plate and the lower friction plate are fixed through bolt threads penetrating through the third long hole; the fixed guide plate and the side wall of the lower fixed cylinder are fixed through bolt threads penetrating through the fourth long hole; the first long hole, the second long hole, the third long hole, and the fourth long hole have a length direction parallel to an axial direction of the first through hole.
Preferably, a side of the fixed guide adjacent to the piston rod is formed with a reinforcing rib.
Preferably, the first end of the piston rod forms a thickened portion, and the thickened portion limits the first viscoelastic energy consumption assembly and is connected with the upper connecting piece; the second end of piston rod forms the external screw thread, fixed end plate form with the first screw of external screw thread complex, fixed end plate with the second end spiro union of piston rod, fixed end plate is right the second viscoelastic energy dissipation subassembly is spacing.
Preferably, the spring comprises a coil spring, a wave spring or a belleville spring.
Preferably, two fixed guide plates are included, or the fixed guide plates are cylindrical.
Preferably, the outer radius of the spring is smaller than the distance from the inner friction upper limiting plate and the inner friction lower limiting plate to the central axis of the piston rod.
Preferably, the first viscoelastic energy consumption component and the second viscoelastic energy consumption component are respectively integrally formed.
Preferably, the inner friction upper limiting plate is provided with a second screw hole, the upper friction plate is provided with a second through hole corresponding to the second screw hole, and the inner friction upper limiting plate and the upper friction plate are fixed by bolts sequentially penetrating through the second screw hole, the first long hole and the second through hole;
the fixed guide plate is provided with a third screw hole, the side wall of the upper fixed cylinder is provided with a third through hole corresponding to the third screw hole in position, and the fixed guide plate and the side wall of the upper fixed cylinder are fixed through bolts sequentially penetrating through the third screw hole, the second long hole and the third through hole in a screwed mode.
The inner friction lower limiting plate is provided with a fourth screw hole, the lower friction plate is provided with a fourth through hole corresponding to the fourth screw hole in position, and the inner friction lower limiting plate and the lower friction plate are fixed through bolts sequentially penetrating through the fourth screw hole, the third long hole and the fourth through hole in a screwed mode;
the fixed guide plate is provided with a fifth screw hole, the side wall of the lower fixed cylinder is provided with a fifth through hole corresponding to the fifth screw hole in position, and the fixed guide plate and the side wall of the lower fixed cylinder are fixed through bolts sequentially penetrating through the fifth screw hole, the fourth long hole and the fifth through hole in a screwed mode.
The utility model discloses owing to adopted above technical scheme, make it have following beneficial effect:
(1) when the whole supporting component is pressed, external pressure pushes the piston rod to move downwards, when the whole supporting component is subjected to small external excitation action (wind vibration, machine vibration, subway vibration, small earthquake action and the like), the structural deformation is small, the whole compression deformation of the component is small, the fixed end plate and the piston rod move downwards together, the fixed end plate is separated from the inner viscoelastic lower cylinder, the thickened part of the piston rod pushes the inner viscoelastic upper cylinder to move downwards, the viscoelastic body is subjected to shear deformation, and the energy consumption capability and the self-resetting capability are provided through the shear deformation of the viscoelastic body; when the structure is subjected to external excitation increase (major earthquake, rare earthquake and the like), the structure deformation is increased, the whole compression deformation of the component is increased, along with the increase of the compression deformation of the supporting component, when the deformation limit of the viscoelastic body is reached, the inner viscoelastic upper cylinder moves downwards and is abutted against the first limit protruding part of the inner friction upper limit plate, the inner viscoelastic upper cylinder and the first limit protruding part move together in a locking mode, the inner viscoelastic upper cylinder and the first limit protruding part do not deform relatively, the viscoelastic body is prevented from being damaged, the piston rod drives the inner viscoelastic upper cylinder, the inner friction upper limit plate and the upper friction plate to move downwards together, the inner viscoelastic upper cylinder, the inner friction upper limit plate and the upper friction plate slide relatively with the fixed guide plate and the upper fixed cylinder, energy is consumed through the friction effect, and the first limit protruding part extrudes the.
When the whole supporting member is pulled, external pulling force pulls the piston rod to move upwards, when the whole supporting member is subjected to small external excitation action (wind vibration, machine vibration, subway vibration, small vibration action and the like), the structural deformation is small, the whole stretching deformation of the member is small, the fixed end plate is abutted to the inner viscoelastic lower barrel and moves upwards together with the piston rod, the thickened part of the piston rod is separated from the inner viscoelastic upper barrel, the viscoelastic body is subjected to shear deformation, and the energy consumption capability and the self-resetting capability are provided through the shear deformation of the viscoelastic body; when the structure is subjected to external excitation increase (major earthquake, rare earthquake and the like), the structure deformation is increased, the whole compression deformation of the component is increased, the support component is tensioned and deformed to increase, when the deformation limit of the viscoelastic body is reached, the inner viscoelastic lower barrel moves upwards and is abutted against the second limit protruding part of the inner friction lower limiting plate, the inner viscoelastic lower barrel and the second limit protruding part move together in a locking mode, the inner viscoelastic lower barrel and the second limit protruding part do not move relatively, the viscoelastic body is prevented from being damaged, the piston rod drives the inner viscoelastic lower barrel, the inner friction lower limiting plate and the lower friction plate to move upwards together, the inner viscoelastic lower barrel, the inner friction lower limiting plate and the fixed guide plate and the lower fixed barrel slide relatively, energy is consumed through friction, and the second limit protruding part extrudes the spring in the upward movement process.
Through the structure, the supporting member has stable energy consumption capability and self-resetting capability no matter the whole supporting member is under the action of pressure or tension, and the working state of corresponding parts in the supporting member can be correspondingly adjusted according to the external excitation action characteristic and the deformation characteristic of the supporting member, so that the supporting member is prevented from being damaged.
(2) Threaded holes are reserved in the limiting plate on the inner friction and the limiting plate under the inner friction, circular through holes and long holes are reserved in the upper friction plate and the lower friction plate, threaded holes and long holes are reserved in the fixed guide plate, and circular through holes are reserved in the upper fixed cylinder and the lower fixed cylinder. The inner friction upper limiting plate, the fixed guide plate, the upper friction plate and the upper fixed cylinder are sequentially arranged from inside to outside, the inner friction upper limiting plate and the upper friction plate are fixed through bolts to form a first friction assembly moving together, the fixed guide plate and the upper fixed cylinder are connected through bolts to form a fixed second friction assembly, and the first friction assembly and the second friction assembly can slide relatively; the lower limiting plate of internal friction, the fixed guide plate, the lower friction plate and the lower fixed cylinder are sequentially arranged from inside to outside and installed, the lower limiting plate of internal friction and the lower friction plate are fixed through bolts to form a third friction assembly moving together, the fixed guide plate and the lower fixed cylinder are connected through bolts to form a fixed fourth friction assembly, and relative sliding can occur between the third friction assembly and the fourth friction assembly.
(3) The first limiting protruding part and the second limiting protruding part of the inner friction upper limiting plate and the inner friction lower limiting plate can respectively play a role in locking and limiting the inner viscoelastic upper barrel and the inner viscoelastic lower barrel, and can also play a role in fixing and extruding the spring.
(4) The long holes are reserved in each component in the supporting member, so that the movement coordination of each component and the overall deformation coordination of the supporting member can be ensured in the friction deformation process of tension or compression.
(5) The friction force between each component in the viscoelastic friction type energy-consuming self-resetting buckling-restrained brace can provide certain energy-consuming capacity when the brace is subjected to tension/compression deformation.
(6) The viscoelastic friction type energy dissipation self-resetting buckling-restrained brace is characterized in that an upper viscoelastic energy dissipation component, a lower viscoelastic energy dissipation component and other components can be detached, all the components can be machined in batches in a standardized mode in a factory, and components are mainly assembled and fixed through threads or high-strength bolts.
(7) The utility model discloses utilize viscoelastic friction type power consumption from restoring to throne buckling restrained brace, make from restoring to throne that the bracing member power consumption ability is weak, viscoelastic damping device warp too big emergence destruction problem can solve, the power consumption ability of full play buckling restrained brace and from restoring to throne the ability to the bracing member can be adjusted supporting corresponding work piece according to the outside excitation condition that receives and self deformation characteristic, has further strengthened the security of structure.
Drawings
Fig. 1 is a schematic structural view of a viscoelastic friction energy-dissipating self-resetting buckling-restrained brace according to a first embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a deformation of a viscoelastic friction type energy-dissipating self-resetting buckling restrained brace in a working stage of a one-stage compression elastic body according to a first embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a deformation of a two-stage pressed friction component of a viscoelastic friction type energy-dissipating self-resetting buckling restrained brace according to a first embodiment of the present invention during a working stage;
fig. 4 is a schematic diagram illustrating deformation of a viscoelastic friction energy-dissipating self-resetting buckling restrained brace in a tensile elastic body working phase in a first stage according to a first embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a deformation of a two-stage tension friction member of a viscoelastic friction type energy-dissipating self-resetting buckling restrained brace according to a first embodiment of the present invention during a working stage;
fig. 6 is a schematic structural view of a viscoelastic friction energy-consuming self-resetting buckling-restrained brace according to a second embodiment of the present invention.
The corresponding part names indicated by the numbers in the figures: 1. a piston rod; 2. an upper fixed cylinder; 3. an inner viscoelastic upper barrel; 4. a spring; 5. an inner viscoelastic lower barrel; 6. fixing the end plate; 7. a first viscoelastic body; 8. an inner friction upper limiting plate; 9. fixing the guide plate; 10. an upper friction plate; 11. a second viscoelastic body; 12. an inner friction lower limiting plate; 13. a lower friction plate; 14. a lower fixed cylinder; 15. a first long hole; 16. a second long hole; 17. a third long hole; 18. a fourth long hole; 19. a second bolt hole; 20. a third bolt hole; 21. a lower connecting piece; 22. an upper connecting piece; 23. a second limit projection; 24. a thickening part; 25. reinforcing ribs; 26. a first limit projection; 27. a first screw hole; 28. a second through hole; 29. a third through hole; 30. a fourth via hole; 31. a fourth screw hole; 32. a fifth through hole; 33. a fifth screw hole; 34. a first via.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings of fig. 1 to 6, so as to better understand the functions and features of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a viscoelastic friction type energy dissipation self-resetting buckling restrained brace, including: an upper fixed cylinder 2, a lower fixed cylinder 14, at least one fixed guide plate 9, a piston rod 1, a fixed end plate 6, at least one spring 4, a first viscoelastic energy dissipation component, a second viscoelastic energy dissipation component, at least one first friction structure, at least one second friction structure, at least one third friction structure, at least one fourth friction structure, an upper connecting piece 22 and a lower connecting piece 21; a first through hole 34 is formed in the middle of the top surface of the upper fixed cylinder 2, two ends of the fixed guide plate 9 are respectively inserted and fixedly connected into the upper fixed cylinder 2 and the lower fixed cylinder 14, and the fixed guide plate 9 is parallel to the axis of the first through hole 34; the piston rod 1 is arranged between the upper fixed cylinder 2 and the lower fixed cylinder 14 along the axis, and the first end of the piston rod 1 penetrates out of the first through hole 34; the first viscoelastic energy consumption assembly and the second viscoelastic energy consumption assembly are respectively sleeved at two ends of the piston rod 1, the first viscoelastic energy consumption assembly is connected with the upper fixed barrel 2 through a first friction structure, and the second viscoelastic energy consumption assembly is connected with the lower fixed barrel 14 through a second friction structure; the spring 4 is arranged between the first viscoelastic energy consumption component and the second viscoelastic energy consumption component; the first end of the piston rod 1 limits the first viscoelastic energy consumption component and is connected with the upper connecting piece 22; the second end of the piston rod 1 is connected with a fixed end plate 6, and the fixed end plate 6 limits the second viscoelastic energy consumption assembly; the lower fixed cylinder 14 is connected to a lower connecting member 21.
In this embodiment, the first viscoelastic energy dissipating assembly includes an inner viscoelastic upper bobbin 3, at least one first viscoelastic body 7, and at least one inner friction upper limiting plate 8; the inner viscoelastic upper barrel 3 is sleeved outside the piston rod 1, and the inner friction upper limiting plate 8 is connected with the upper fixed barrel 2 through a first friction structure; the first viscoelastic body 7 is bonded between the inner viscoelastic upper barrel 3 and the inner friction upper limiting plate 8, one end, far away from the upper fixed barrel 2, of the inner friction upper limiting plate 8 protrudes inwards to form at least one first limiting protruding part 26, and the first limiting protruding part 26 limits the inner viscoelastic upper barrel 3;
the second viscoelastic energy consumption component comprises an inner viscoelastic lower tube 5, at least one second viscoelastic body 11 and at least one inner friction lower limiting plate 12; the inner viscoelastic lower tube 5 is sleeved outside the piston rod 1, and the inner friction lower limiting plate 12 is connected with the lower fixed tube 14 through a second friction structure; the second viscoelastic body 11 is bonded between the inner viscoelastic lower tube 5 and the inner friction lower limiting plate 12, one end of the inner friction lower limiting plate 12, which is far away from the lower fixed tube 14, protrudes inwards to form at least one second limiting protruding part 23, and the second limiting protruding part 23 limits the inner viscoelastic lower tube 5.
The inner friction upper limiting plate 8 is provided with a first limiting protruding part 26, the inner friction lower limiting plate 12 is provided with a second limiting protruding part 23, when the deformation of the first viscoelastic body 7 or the second viscoelastic body 11 reaches the limit, the inner viscoelastic upper barrel 3 is abutted with the first limiting protruding part 26, the inner viscoelastic lower barrel 5 is abutted with the second limiting protruding part 23 to be locked, the two cooperatively deform, and the first viscoelastic body 7 or the second viscoelastic body 11 is prevented from being deformed too much to be damaged.
In this embodiment, the first friction structure includes a first friction component and a second friction component, the first friction component includes an inner friction upper limiting plate 8 and at least one upper friction plate 10; the second friction component comprises a fixed guide plate 9 and a side wall of the upper fixed cylinder 2; the inner friction upper limiting plate 8, the fixed guide plate 9, the upper friction plate 10 and the side wall of the upper fixed cylinder 2 are sequentially stacked; the fixed guide plate 9 is provided with at least one first long hole 15, and the upper friction plate 10 is provided with at least one second long hole 16; the upper limiting plate 8 and the upper friction plate 10 in the internal friction are fixed in a screwed mode through bolts penetrating through the first long holes 15; the fixed guide plate 9 and the side wall of the upper fixed cylinder 2 are fixed in a screwed manner through bolts penetrating through the second long holes 16;
the second friction structure comprises a third friction component and a fourth friction component, wherein the third friction component comprises an inner friction lower limiting plate 12 and at least one lower friction plate 13; the fourth friction component comprises a fixed guide plate 9 and the side wall of the lower fixed cylinder 14; the inner friction lower limiting plate 12, the fixed guide plate 9, the lower friction plate 13 and the side wall of the lower fixed cylinder 14 are sequentially stacked; the fixed guide plate 9 is provided with at least one third long hole 17, and the lower friction plate 13 is provided with at least one fourth long hole 18; the inner friction lower limiting plate 12 and the lower friction plate 13 are fixed by bolts penetrating through the third long holes 17; the side walls of the fixed guide plate 9 and the lower fixed cylinder 14 are fixed in a threaded manner through bolts penetrating through the fourth long holes 18; the longitudinal directions of the first long hole 15, the second long hole 16, the third long hole 17, and the fourth long hole 18 are parallel to the axial direction of the first through hole 34.
The first friction assembly and the second friction assembly exert pretightening force through bolts, and the third friction assembly and the fourth friction assembly also exert pretightening force through bolts; the method is used for determining the starting critical state of the friction energy consumption component by applying the pretightening force.
In addition, a thickened part 24 is formed at the first end of the piston rod 1, and the thickened part 24 limits the first viscoelastic energy consumption component and is connected with the upper connecting piece 22; the second end of piston rod 1 forms the external screw thread, and fixed end plate 6 forms the first screw 27 with external screw thread complex, and fixed end plate 6 and the second end spiro union of piston rod 1, fixed end plate 6 is spacing to second viscoelastic energy dissipation subassembly.
The spring 4 comprises a spiral spring, a wave spring or a disc spring, and the bearing force and the restoring force required by supporting can be combined through different forms of superposition, splicing and the like of the spring 4, so that the mechanical property of the required supporting member is obtained.
The outer radius of the spring 4 is smaller than the distance from the inner friction upper limiting plate 8 and the inner friction lower limiting plate 12 to the central axis of the piston rod 1. The spring 4 has a top end abutting against the first stopper projection 26 of the upper stopper plate 8 and a bottom end abutting against the second stopper projection 23 of the inner friction lower stopper plate 12.
The spring 4 is free in the initial state without pre-compression and can also exert pre-compression.
Comprises two fixed guide plates 9, or the fixed guide plates 9 are cylindrical.
In this embodiment, the first viscoelastic energy consumption component and the second viscoelastic energy consumption component are respectively integrally formed.
The inner friction upper limiting plate 8 is provided with a second screw hole 19, the upper friction plate 10 is provided with a second through hole 28 corresponding to the second screw hole 19 in position, and the inner friction upper limiting plate 8 and the upper friction plate 10 are fixed through bolts sequentially penetrating through the second screw hole 19, the first long hole 15 and the second through hole 28 in a threaded manner;
the fixed guide plate 9 is provided with a third screw hole 20, the side wall of the upper fixed cylinder 2 is provided with a third through hole 29 corresponding to the third screw hole 20, and the fixed guide plate 9 and the side wall of the upper fixed cylinder 2 are fixed through bolts sequentially penetrating through the third screw hole 20, the second long hole 16 and the third through hole 29 in a screwed mode.
The inner friction lower limiting plate 12 is provided with a fourth screw hole 31, the lower friction plate 13 is provided with a fourth through hole 30 corresponding to the fourth screw hole 31, and the inner friction lower limiting plate 12 and the lower friction plate 13 are fixed by bolts sequentially penetrating through the fourth screw hole 31, the third long hole 17 and the fourth through hole 30;
the fixed guide plate 9 is provided with a fifth screw hole 33, the side wall of the lower fixed cylinder 14 is provided with a fifth through hole 32 corresponding to the fifth screw hole 33, and the fixed guide plate 9 and the side wall of the lower fixed cylinder 14 are fixed by bolts sequentially penetrating through the fifth screw hole 33, the fourth long hole 18 and the fifth through hole 32.
In the embodiment, the internal viscoelastic energy consumption component is supported to play a role in the early deformation stage of the supporting component, so that self-resetting force and energy consumption capacity are provided for the structure, the internal viscoelastic energy consumption component is locked to prevent the viscoelastic material from being damaged along with the deformation increase of the supporting component, the friction energy consumption component in the component starts to work to provide the energy consumption capacity, and meanwhile, the internal spring 4 is supported to enter a stressed state to provide the self-resetting capacity. The support member not only has self-resetting capability, but also can be automatically adjusted according to the deformation characteristic of the support stress, prevents the internal components of the support from being damaged, and has stable and efficient energy consumption capability. The problem of current from reset device power consumption ability and from reset ability poor stability is solved.
Referring to fig. 1 to 3, when the viscoelastic friction type energy-consuming self-resetting buckling restrained brace is in a pressed state, when the brace is subjected to a small external excitation effect (wind vibration, machine vibration, subway vibration, small earthquake effect and the like), the structural deformation is small, the brace member mainly consumes energy, and only a small rigidity and restoring force need to be added to the structure, at the moment, the external pressure pushes the piston rod 1 to move downwards, the fixed end plate 6 and the piston rod 1 move downwards together, the fixed end plate 6 is separated from the inner viscoelastic lower tube 5, the thickened part 24 of the piston rod 1 pushes the inner viscoelastic upper tube 3 to move downwards, the first viscoelastic body 7 is subjected to shear deformation, and the energy-consuming capability and the self-resetting capability are provided through the shear deformation of the first viscoelastic body 7; when the structure is subjected to external excitation increase (major earthquake, rare earthquake and the like), the structure deformation is increased and even damaged, the supporting member needs to provide larger rigidity and self-resetting force while consuming energy, along with the increase of the compression deformation of the supporting member, when the deformation limit of the first viscoelastic body 7 is reached, the inner viscoelastic upper barrel 3 moves downwards to be abutted against the first limit protruding part 26 of the inner friction upper limiting plate 8, the two parts are locked to move together and do not deform, the first viscoelastic body 7 is prevented from being deformed and damaged too much, meanwhile, the first friction structure is started to enter a working state, the piston rod 1 drives the inner viscoelastic upper barrel 3, the inner friction upper limiting plate 8 and the upper friction plate 10 to move downwards together and slide relative to the fixed guide plate 9 and the upper fixed barrel 2, energy is consumed through the friction effect, the first limit protruding part 26 generates an extrusion effect on the spring 4 in the downward movement process of the inner friction upper limiting plate 8, providing a self-restoring force to the support member.
Referring to fig. 1, 4 and 5, when the viscoelastic friction type energy-consumption self-resetting buckling restrained brace is in a tensioned state, when the brace is subjected to external excitation action (wind vibration, machine vibration, subway vibration, small earthquake action and the like), the structural deformation is small, the brace member mainly consumes energy, only small rigidity and restoring force need to be added to the structure, at the moment, the piston rod 1 is pulled by external tension to move upwards, the fixed end plate 6 is abutted to the inner viscoelastic lower tube 5 and moves upwards together with the piston rod 1, the thickened part 24 of the piston rod 1 is separated from the inner viscoelastic upper tube 3, the second viscoelastic body 11 is subjected to shear deformation, and the energy consumption capacity and the self-resetting capacity are provided through the shear deformation of the second viscoelastic body 11; when the structure is subjected to external excitation increase (major earthquake, rare earthquake and the like), the structure deformation is increased and even damaged, the supporting member needs to provide larger rigidity and self-resetting force while consuming energy, when the deformation of the supporting member is increased along with the tensile deformation of the supporting member and reaches the deformation limit of the second viscoelastic body 11, the inner viscoelastic lower tube 5 moves upwards to abut against the second limit protruding part 23 of the inner friction lower limit plate 12, the two parts are locked to move together and do not generate relative displacement any more, the second viscoelastic body 11 is prevented from being deformed and damaged too much, meanwhile, the second friction structure is started to enter a working state, the piston rod 1 drives the inner viscoelastic lower tube 5, the inner friction lower limit plate 12 and the lower friction plate 13 to move upwards together to slide relative to the fixed guide plate 9 and the lower fixed tube 14, energy is consumed through friction, the second limit protruding part 23 generates extrusion action on the spring 4 in the upward movement process of the inner friction lower limit plate 12, providing a self-restoring force to the support member.
In this embodiment, the self-resetting spring structure design in the supporting member can ensure that the spring 4 is under the pressure action no matter the whole supporting member is in a pressed state or a pulled state, so as to provide the self-resetting capability for the support, and the energy dissipation component and the self-resetting member in the support can be automatically and correspondingly adjusted according to the external excitation action and the whole support deformation condition of the structure, so as to provide the reliable and efficient energy dissipation capability and the self-resetting capability, and prevent the first viscoelastic body 7 or the second viscoelastic body 11 in the support from being damaged and failed.
The viscoelastic friction type energy-consumption self-resetting buckling-restrained brace comprises a first viscoelastic energy-consumption component, a second viscoelastic energy-consumption component and a spring 4 arranged in the middle, wherein the spring 4 can be a spiral spring, a wave spring or a disc spring, and the self-resetting force and the deformation required by the brace component are assembled by combining the spring 4 in different forms such as superposition, involution or mixing.
Referring to fig. 6, a viscoelastic friction type energy dissipation self-resetting buckling restrained brace according to a second embodiment of the present invention has a structure substantially the same as that of the first embodiment, and the difference is that a reinforcing rib 25 is formed on one side of the fixed guide plate 9 adjacent to the piston rod 1 to increase the overall stability of the brace member.
The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.
Claims (10)
1. The utility model provides a viscoelastic friction type power consumption is from restoring to throne buckling restrained brace which characterized in that includes: the energy-saving damper comprises an upper fixed cylinder, a lower fixed cylinder, at least one fixed guide plate, a piston rod, a fixed end plate, at least one spring, a first viscoelastic energy-consuming component, a second viscoelastic energy-consuming component, at least one first friction structure, at least one second friction structure, an upper connecting piece and a lower connecting piece; a first through hole is formed in the middle of the top surface of the upper fixed cylinder, two ends of the fixed guide plate are respectively inserted into the upper fixed cylinder and the lower fixed cylinder and are fixedly connected in the upper fixed cylinder and the lower fixed cylinder, and the fixed guide plate is parallel to the axis of the first through hole; the piston rod is arranged between the upper fixed cylinder and the lower fixed cylinder along the axis, and the first end of the piston rod penetrates out of the first through hole; the first viscoelastic energy consumption assembly and the second viscoelastic energy consumption assembly are respectively sleeved at two ends of the piston rod, the first viscoelastic energy consumption assembly is connected with the upper fixed barrel through the first friction structure, and the second viscoelastic energy consumption assembly is connected with the lower fixed barrel through the second friction structure; the spring is arranged between the first viscoelastic energy consumption assembly and the second viscoelastic energy consumption assembly; the first end of the piston rod limits the first viscoelastic energy consumption assembly and is connected with the upper connecting piece; the second end of the piston rod is connected with the fixed end plate, and the fixed end plate limits the second viscoelastic energy consumption assembly; the lower fixed cylinder is connected with the lower connecting piece.
2. The viscoelastic friction type energy-consuming self-resetting buckling restrained brace as claimed in claim 1, wherein the first viscoelastic energy-consuming component comprises an inner viscoelastic upper barrel, at least one first viscoelastic body and at least one inner friction upper limiting plate; the inner viscoelastic upper barrel is sleeved outside the piston rod, and the inner friction upper limiting plate is connected with the upper fixed barrel through the first friction structure; the first viscoelastic body is bonded between the inner viscoelastic upper barrel and the inner friction upper limiting plate, one end of the inner friction upper limiting plate, which is far away from the upper fixed barrel, protrudes inwards to form at least one first limiting protruding part, and the first limiting protruding part limits the inner viscoelastic upper barrel;
the second viscoelastic energy consumption assembly comprises an inner viscoelastic lower barrel, at least one second viscoelastic body and at least one inner friction lower limiting plate; the inner viscoelastic lower barrel is sleeved outside the piston rod, and the inner friction lower limiting plate is connected with the lower fixed barrel through the second friction structure; the second viscoelastic body is bonded between the inner viscoelastic lower tube and the inner friction lower limiting plate, one end, far away from the lower fixed tube, of the inner friction lower limiting plate protrudes inwards to form at least one second limiting protruding part, and the second limiting protruding part limits the inner viscoelastic lower tube.
3. The viscoelastic-friction energy-consuming self-resetting buckling restrained brace according to claim 2, wherein the first friction structure comprises a first friction component and a second friction component, the first friction component comprises the inner-friction upper limiting plate and at least one upper friction plate; the second friction assembly comprises the fixed guide plate and the side wall of the upper fixed cylinder; the inner friction upper limiting plate, the fixed guide plate, the upper friction plate and the side wall of the upper fixed cylinder are sequentially stacked; the fixed guide plate is provided with at least one first long hole, and the upper friction plate is provided with at least one second long hole; the inner friction upper limiting plate and the upper friction plate are fixed through bolt threads penetrating through the first long hole; the fixed guide plate and the side wall of the upper fixed cylinder are fixed in a threaded manner through bolts penetrating through the second long holes;
the second friction structure comprises a third friction assembly and a fourth friction assembly, and the third friction assembly comprises the inner friction lower limiting plate and at least one lower friction plate; the fourth friction assembly comprises the fixed guide plate and the side wall of the lower fixed cylinder; the inner friction lower limiting plate, the fixed guide plate, the lower friction plate and the side wall of the lower fixed cylinder are sequentially stacked; the fixed guide plate is provided with at least one third long hole, and the lower friction plate is provided with at least one fourth long hole; the inner friction lower limiting plate and the lower friction plate are fixed through bolt threads penetrating through the third long hole; the fixed guide plate and the side wall of the lower fixed cylinder are fixed through bolt threads penetrating through the fourth long hole; the first long hole, the second long hole, the third long hole, and the fourth long hole have a length direction parallel to an axial direction of the first through hole.
4. The viscoelastic friction energy-consuming self-resetting buckling restrained brace according to claim 3, wherein a reinforcing rib is formed on one side of the fixed guide plate adjacent to the piston rod.
5. The viscoelastic friction type energy-consuming self-resetting buckling restrained brace according to claim 3 or 4, wherein the first end of the piston rod is formed with an enlarged portion, and the enlarged portion limits the first viscoelastic energy-consuming component and is connected with the upper connecting piece; the second end of piston rod forms the external screw thread, fixed end plate forms the first screw with external screw thread complex, fixed end plate with the second end spiro union of piston rod.
6. The viscoelastic friction energy-consuming self-resetting buckling restrained brace according to claim 5, wherein the spring comprises a coil spring, a wave spring or a disc spring.
7. The viscoelastic friction type energy-consuming self-resetting buckling restrained brace as claimed in claim 5, wherein the brace comprises two fixed guide plates, or the fixed guide plates are cylindrical.
8. The viscoelastic friction type energy-consuming self-resetting buckling restrained brace as claimed in claim 5, wherein an outer radius of the spring is smaller than distances from the inner friction upper limiting plate and the inner friction lower limiting plate to the central axis of the piston rod.
9. The viscoelastic friction type energy-consuming self-resetting buckling restrained brace according to claim 5, wherein the first viscoelastic energy-consuming component and the second viscoelastic energy-consuming component are respectively integrally formed.
10. The viscoelastic friction type energy-consumption self-resetting buckling-restrained brace as claimed in claim 5, wherein the inner friction upper limiting plate is provided with a second screw hole, the upper friction plate is provided with a second through hole corresponding to the second screw hole, and the inner friction upper limiting plate and the upper friction plate are fixed by bolts sequentially penetrating through the second screw hole, the first long hole and the second through hole;
the fixed guide plate is provided with a third screw hole, the side wall of the upper fixed barrel is provided with a third through hole corresponding to the third screw hole in position, and the fixed guide plate and the side wall of the upper fixed barrel are fixed through bolts sequentially penetrating through the third screw hole, the second long hole and the third through hole in a screwed mode;
the inner friction lower limiting plate is provided with a fourth screw hole, the lower friction plate is provided with a fourth through hole corresponding to the fourth screw hole in position, and the inner friction lower limiting plate and the lower friction plate are fixed through bolts sequentially penetrating through the fourth screw hole, the third long hole and the fourth through hole in a screwed mode;
the fixed guide plate is provided with a fifth screw hole, the side wall of the lower fixed cylinder is provided with a fifth through hole corresponding to the fifth screw hole in position, and the fixed guide plate and the side wall of the lower fixed cylinder are fixed through bolts sequentially penetrating through the fifth screw hole, the fourth long hole and the fifth through hole in a screwed mode.
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| CN202020023436.3U CN211851139U (en) | 2020-01-06 | 2020-01-06 | Viscoelastic friction type energy-consumption self-resetting buckling-restrained brace |
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| CN202020023436.3U CN211851139U (en) | 2020-01-06 | 2020-01-06 | Viscoelastic friction type energy-consumption self-resetting buckling-restrained brace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111005613A (en) * | 2020-01-06 | 2020-04-14 | 上海市建筑科学研究院有限公司 | Viscoelastic friction type energy-consumption self-resetting buckling-restrained brace |
| CN113846775A (en) * | 2021-10-22 | 2021-12-28 | 上海天华崧易建筑设计有限公司 | Corrugated steel plate clad cold-bending thin-walled shear wall with self-resetting energy dissipation support |
| CN116290375A (en) * | 2023-05-24 | 2023-06-23 | 中铁城建集团第一工程有限公司 | Anti-seismic buckling support system and support method thereof |
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2020
- 2020-01-06 CN CN202020023436.3U patent/CN211851139U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111005613A (en) * | 2020-01-06 | 2020-04-14 | 上海市建筑科学研究院有限公司 | Viscoelastic friction type energy-consumption self-resetting buckling-restrained brace |
| CN113846775A (en) * | 2021-10-22 | 2021-12-28 | 上海天华崧易建筑设计有限公司 | Corrugated steel plate clad cold-bending thin-walled shear wall with self-resetting energy dissipation support |
| CN116290375A (en) * | 2023-05-24 | 2023-06-23 | 中铁城建集团第一工程有限公司 | Anti-seismic buckling support system and support method thereof |
| CN116290375B (en) * | 2023-05-24 | 2023-08-18 | 中铁城建集团第一工程有限公司 | Anti-seismic buckling support system and support method thereof |
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