CN113882544B - Spatial multidirectional viscoelastic-shape memory alloy damping system - Google Patents
Spatial multidirectional viscoelastic-shape memory alloy damping system Download PDFInfo
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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
- 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
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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
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
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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
- E04H9/022—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising laminated structures of alternating elastomeric and rigid layers
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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
- E04H9/0235—Anti-seismic devices with hydraulic or pneumatic damping
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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
- E04H9/0237—Structural braces with damping devices
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- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
A spatial multidirectional viscoelastic-shape memory alloy shock absorption system comprises an annular inner cylinder, an arc middle plate, an arc outer plate, a viscoelastic material layer, a shape memory alloy rope and a force transmission connection unit; a plurality of arc-shaped middle plates and a plurality of arc-shaped outer plates are arranged on the outer side of the annular inner cylinder from inside to outside, and viscoelastic material layers are arranged between the annular inner cylinder and the arc-shaped middle plates and between the arc-shaped middle plates and the arc-shaped outer plates; a plurality of shape memory alloy ropes are arranged in the annular inner cylinder, and two ends of each shape memory alloy rope penetrate out and are fixed on the outer surface of the arc-shaped outer plate; the outer surface of the arc-shaped outer plate is symmetrically connected with a plurality of force transmission connecting units by the central axis of the annular inner cylinder, and the outer ends of the force transmission connecting units and the two ends of the annular inner cylinder are used for connecting buildings. The invention has the technical advantage of good damping effect on vibration in any direction in space, greatly widens the damping frequency domain of the damper and has good deformation resistance and recoverability.
Description
Technical Field
The invention relates to the technical field of building structure shock absorption, in particular to a spatial multidirectional viscoelastic-shape memory alloy shock absorption system.
Background
With the development of the times, building structures gradually develop in high, large and complex directions, and earthquakes and strong wind pose great threats to the complex building structures. Under the conditions of earthquake and strong wind, the complex (super) high-rise structure is damaged and destroyed in different degrees, even overturns or collapses, and huge casualties and economic losses are caused. Viscoelastic damping technology is used in building structures for earthquake and wind resistance.
For example, a published patent application multi-direction high energy consumption self-resetting shape memory alloy double-layer extrusion-lead damper (CN 106013498A) adopts a sleeve type structure, wherein a shape memory alloy is arranged, and the self-resetting effect is achieved on the whole device, but the device only achieves the shock absorption effect in the axial direction of the sleeve, but cannot achieve the shock absorption effect in the circumferential direction or the radial direction of the sleeve, and the arrangement of the shape memory alloy can only enable a connecting rod in the device to reset in time when the connecting rod is twisted. Under the action of earthquake and strong wind, complex (super) high-rise structures often generate combined space three-dimensional multi-directional deformation and vibration on the structures, such as tension, compression, bending shear, torsion and the like. At this time, the conventional viscoelastic damper or damper containing shape memory alloy is difficult to perform spatial three-dimensional multidirectional shock absorption and energy consumption on the structure, which often results in that the structure generates excessive displacement deformation in the direction (including the torsion direction of the whole structure) in which shock absorption is not performed, so that the local part of the structure is seriously damaged and destroyed, and the irreversible damage and even the collapse of the whole structure are caused. And the frequency dependence of the damping effect of the traditional viscoelastic damper is strong, and the damping effect is good only in a certain frequency domain.
Disclosure of Invention
The invention aims to solve the problems of the traditional damper, and provides a space multidirectional viscoelastic-shape memory alloy damping system which has the technical advantage of good damping effect on vibration in any direction in space, greatly widens the damping frequency domain of the damper, and has good deformation resistance and restorable capacity.
In order to achieve the purpose, the invention adopts the following technical scheme:
a space multidirectional viscoelastic-shape memory alloy shock absorption system comprises an annular inner cylinder, an arc middle plate, an arc outer plate, a viscoelastic material layer, a shape memory alloy rope and a force transmission connection unit;
a plurality of arc-shaped middle plates are arranged on the outer side of the annular inner cylinder along the circumferential direction of the annular inner cylinder, a plurality of arc-shaped outer plates are arranged on the outer side of the arc-shaped middle plates along the circumferential direction of the annular inner cylinder, a first viscoelastic material layer is arranged between the annular inner cylinder and the arc-shaped middle plates, and a second viscoelastic material layer is arranged between the arc-shaped middle plates and the arc-shaped outer plates;
a plurality of shape memory alloy ropes are arranged in the annular inner cylinder along the radial direction of the annular inner cylinder, and two ends of each shape memory alloy rope respectively penetrate through the annular inner cylinder, the first viscoelastic material layer, the arc middle plate, the second viscoelastic material layer and the arc outer plate and are fixed on the outer surface of the arc outer plate;
the outer surface of the arc-shaped outer plate is connected with a plurality of force transmission connecting units by taking the central shaft of the annular inner cylinder as the center, and the outer ends of the force transmission connecting units and the two ends of the annular inner cylinder are used for connecting buildings.
Furthermore, each arc middle plate is arranged at intervals, each arc outer plate is arranged at intervals, and the arc middle plates are as long as the arc outer plates and are arranged in an internally-externally staggered manner.
Furthermore, the interval between two adjacent arc middle plates is 30-80 mm, and the interval between two adjacent arc outer plates is 40-90 mm.
Further, the thickness of the arc middle plate and the thickness of the arc outer plate are both 10 mm-30 mm, the thickness of the first viscoelastic material layer is 1.5-3 times of that of the arc middle plate, and the thickness of the second viscoelastic material layer is 1.5-3 times of that of the arc outer plate.
Furthermore, the annular inner cylinder comprises a left annular inner cylinder and a right annular inner cylinder which are symmetrically arranged, and the interval between opposite ends of the left annular inner cylinder and the right annular inner cylinder is 80-150 mm; the opposite ends of the left annular inner cylinder and the right annular inner cylinder both exceed the arc middle plate and the arc outer plate, and the exceeding length is 80-150 mm.
Further, the force transmission connecting unit is of a multi-section detachable tubular structure.
Furthermore, the force transmission connecting unit can rotate along the circumferential surface of the annular inner cylinder or on a plane vertical to the circumferential surface of the annular inner cylinder by taking the joint of the arc-shaped outer plate and the arc-shaped outer plate as a fulcrum.
Preferably, the annular inner cylinder, the arc middle plate, the arc outer plate and the force transmission connecting unit are made of steel pipes and/or plates.
Preferably, the viscoelastic material layer is connected by high-temperature high-pressure vulcanization or strong adhesive.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
1. when the structure generates multi-directional spatial vibration (vibration) under the excitation action of an earthquake and strong wind (horizontal, vertical and spatial torsion coupling), the damping system can transmit vibration energy to the viscoelastic material layer and the shape memory alloy rope through a superior transmission path for common dissipation, greatly improves the energy consumption capability of the whole damping system, and ensures that the whole damping system has good damping effect on the vibration (vibration) in any spatial direction.
2. The viscoelastic material has stronger frequency dependence on energy consumption and shock absorption, the energy consumption and shock absorption efficiency exerted in a high-rise building structure with lower natural vibration frequency and a high-flexibility structure (such as a pagoda, a chimney and a water tower) is lower, and the frequency has little influence on the energy consumption and shock absorption effect of the shape memory alloy material; the two materials are organically combined to perform common energy dissipation and shock absorption, so that the shock absorption frequency domain of the damper is greatly widened.
3. This shock mitigation system can be according to shock attenuation direction demand and the structure allowable mounted position, can be nimble install on whole space dimension.
4. According to the damping requirement, a certain pre-pressure can be applied to the viscoelastic material layer through the shape memory alloy rope, so that the damping force can be flexibly adjusted, meanwhile, good connecting force can be provided between the viscoelastic material layer and the steel cylinder and between the viscoelastic material layer and the arc-shaped plate, and the viscoelastic material layer can be effectively prevented from being subjected to tensile damage and shearing damage.
5. Because the shape memory alloy rope has better self-recovery capability, the residual deformation of the whole damping system can be effectively reduced, and the capability of resisting deformation and recovering after vibration (vibration) of the whole damping system is improved.
6. The force transmission connecting unit adopts a multi-section detachable structure, so that the device is more convenient to transport and construct, and the flexibility of the length adjustment of the force transmission connecting unit can be well enhanced.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1;
FIG. 3 is a sectional view taken along line B-B of FIG. 1;
FIG. 4 is a schematic view of a force transfer coupling unit according to the present invention;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;
FIG. 6 is a schematic structural view of the outer end of the annular inner cylinder;
in the figure: 1 shape memory alloy rope, 2-1 left annular inner cylinder, 2-2 right annular inner cylinder, 3 first viscoelastic material layer, 4 arc middle plates, 5 second viscoelastic material layers, 6 arc outer plates, 7 shock pads, 8 clamps, 9 screws, 10 force transmission connecting pieces, 11 bolts, 12 force transmission connecting units, 12-1 annular steel pipe connecting units, 12-2 annular steel pipe units, 13-1 left sealing plate, 13-2 right sealing plate, 14-1 left end connecting piece and 14-2 right end connecting piece
Detailed Description
The invention will be better understood from the following examples. However, those skilled in the art will readily appreciate that the description of the embodiments is only for illustrating the present invention and should not be taken as limiting the invention as detailed in the claims.
In the following examples, reference is made to fig. 1 to 6:
the invention relates to a spatial multidirectional viscoelastic-shape memory alloy damping system, which structurally comprises a spatial multidirectional cylindrical viscoelastic damping unit, a plurality of shape memory alloy ropes for applying pretightening force and energy consumption, and a plurality of force transmission connecting units for connecting a structure and the spatial multidirectional cylindrical viscoelastic damping unit.
The spatial multi-directional cylindrical viscoelastic damping unit is of a symmetrical structure, all parts of the spatial multi-directional cylindrical viscoelastic damping unit are coaxially arranged from inside to outside, two annular inner cylinders are symmetrically arranged inside the spatial multi-directional cylindrical viscoelastic damping unit, the two annular inner cylinders are respectively a left annular inner cylinder 2-1 and a right annular inner cylinder 2-2, and a certain interval is formed at the opposite ends of the two annular inner cylinders. A plurality of arc-shaped middle plates 4 distributed along the circumferential direction of the annular inner cylinder are uniformly arranged on the outer side of the annular inner cylinder, and a certain movable gap is formed between every two adjacent arc-shaped middle plates 4. A plurality of arc-shaped outer plates 6 distributed along the circumferential direction of the annular inner cylinder are uniformly arranged on the outer side of the arc-shaped middle plate 4, and a certain movable gap is reserved between every two adjacent arc-shaped outer plates 6. And a corresponding first viscoelastic material layer 3 is filled between the annular inner cylinder and the arc middle plate 4, and the first viscoelastic material layer 3 and the arc middle plate 4 have equal length and equal width. And a corresponding second viscoelastic material layer 5 is filled between the arc middle plate 4 and the arc outer plate 6, and the second viscoelastic material layer 5 and the arc outer plate 6 have equal length and equal width. A certain movable gap is correspondingly formed between each two adjacent viscoelastic material layers.
The arc middle plates 4, the arc outer plates 6, the first viscoelastic material layers 3 and the second viscoelastic material layers 5 are correspondingly provided with movable gaps, wherein the movable gaps with the same number are arranged between the arc middle plates 4 and between the arc outer plates 6, and the inner layer and the outer layer are uniformly distributed in a staggered manner. The movable gap between the arc middle plates 4 corresponds to the middle position of the arc outer plates 6, the movable gap between the arc outer plates 6 corresponds to the middle position of the arc middle plates 4, and the positions and the number of the movable gaps formed between the first viscoelastic material layers 3 and the arc middle plates 4 are the same; the number of the movable gaps formed in the second viscoelastic material layer 5 is twice that of the arc-shaped middle plate 4, the positions of half of the movable gaps are the same as those of the movable gaps of the first viscoelastic material layer 3, and the positions of the other half of the movable gaps are the same as those of the arc-shaped outer plate 6, so that all parts of the spatial multi-directional cylindrical viscoelastic damping unit can work cooperatively.
The left side of the left annular inner cylinder 2-1 is provided with a left circular sealing plate 13-1, the right side of the right annular inner cylinder 2-2 is provided with a right circular sealing plate 13-2, the left side of the left circular sealing plate 13-1 is provided with a left end connecting piece 14-1, and the right side of the right circular sealing plate 13-2 is provided with a right end connecting piece 14-2.
According to the shock attenuation demand, annular inner tube 2 all corresponds with arc planking 6 and is opened small circle hole a plurality of, shape memory alloy rope 1 both ends all pass first viscoelastic material layer 3 clearance, the clearance of second viscoelastic material layer 5, the clearance and the small circle hole of arc medium plate 4, the outside of arc planking 6 sets up anchor clamps 8, fixes shape memory alloy rope 1. The shape memory alloy rope threading 1 can apply appropriate pretightening force according to the damping requirement, a viscoelastic damping pad 7 is arranged between the clamp 8 and the arc-shaped outer plate 6, and the damping pad 7 is provided with a corresponding round hole for the shape memory alloy rope 1 to pass through.
Referring to fig. 1 and 2, a plurality of force transmission connectors 10 are symmetrically arranged on the outer side of the arc-shaped outer plate 6 with respect to the central axis of the annular inner cylinder, and the force transmission connection unit 12 is assembled and connected with the arc-shaped outer plate 6 through the force transmission connectors 10 by bolts 11. Wherein, a part of force transmission connectors are parallel to the central shaft of the annular inner cylinder, and the force transmission connecting units 12 assembled and connected on the force transmission connectors can rotate along the circumferential surface of the annular inner cylinder by taking the force transmission connectors as pivots; the other part of the force transmission connecting pieces are vertical to the central shaft of the annular inner cylinder, and the force transmission connecting units 12 assembled and connected on the force transmission connecting pieces can rotate on a plane vertical to the circumferential surface of the annular inner cylinder by taking the force transmission connecting pieces as pivots.
Referring to fig. 3 and 6, the distance between the inner ends of the left annular inner cylinder 2-1 and the right annular inner cylinder 2-2 is 80-150 mm, and the left annular inner cylinder 2-1 and the left sealing plate 13-1, the right annular inner cylinder 2-2 and the right sealing plate 13-1, the left sealing plate 13-1 and the left end connecting piece 14-1, and the right sealing plate 13-2 and the right end connecting piece 14-2 are fixedly connected in a welding mode. The left sealing plate 13-1 and the right sealing plate 13-2 are provided with a plurality of connecting holes along the peripheries of the sealing plates, and the left end connecting piece 14-1 and the right end connecting piece 14-2 are provided with a plurality of connecting holes.
Referring to fig. 3, the distance between the left end surface of the left annular inner cylinder 2-1 and the left sides of the arc middle plate 4 and the arc outer plate 6 is 80 mm-150 mm, and the distance between the right end surface of the right annular inner cylinder 2-2 and the right sides of the arc middle plate 4 and the arc outer plate 6 is 80 mm-150 mm. The thickness of the arc middle plate 4 and the arc outer plate 6 is 10-30 mm, the thickness of the first viscoelastic material layer 3 is 1.5-3 times of that of the arc middle plate, and the thickness of the second viscoelastic material layer 5 is 1.5-3 times of that of the arc outer plate.
Referring to fig. 2, the movement gap between the first viscoelastic material layers 3 is 30 to 80mm, the movement gap between the second viscoelastic materials 5 is 40 to 90mm, the movement gap between the arc middle plates 4 is 30 to 80mm, and the movement gap between the arc outer plates 6 is 40 to 90mm.
Referring to fig. 1 and 2, the diameters of circular holes formed in the annular inner cylinder, the arc-shaped outer plate 6 and the shock pad 7 are slightly larger than the diameter of the shape memory alloy rope 1, the shape memory alloy rope 1 can be arranged in proper numbers from different angles according to shock absorption requirements, and the optimal multi-direction shock absorption effect is achieved.
According to the requirement of multidirectional shock absorption in space, a plurality of force transmission connecting units 12 with proper quantity can be arranged on the outer side of the arc-shaped outer plate 6 from different positions and different directions.
Referring to fig. 4, the two ends of the force transmission connection unit 12 are annular steel pipe connection units 12-1, the end parts are provided with a plurality of connection holes, the middle part is formed by assembling and connecting a plurality of annular steel pipe units 12-2 in a threaded manner, and threads matched with each other are arranged between two adjacent units.
The annular inner cylinder 2, the first viscoelastic material layer 3, the arc middle plate 4, the second viscoelastic material layer 5 and the arc outer plate 6 are connected through high-temperature high-pressure vulcanization or strong adhesive.
The annular inner cylinder, the arc middle plate 4, the arc outer plate 6, the force transmission connecting unit 12, the end connecting piece and the like are made of steel pipes and/or plates.
When in use: according to the space structure form of a building needing damping and the characteristics of being excited by external load, the main vibration direction (the direction with most intense vibration) of the structure space is determined, the axes of the cylindrical viscoelastic damping units are arranged in parallel with the main vibration direction, the force transmission connecting units 12 with proper quantity and length are determined, and the connecting positions and the damping angles of the force transmission connecting units 12 are adjusted reasonably.
When earthquake or strong wind occurs, the structure generates multidirectional (horizontal, vertical and space torsion coupled) vibration (vibration) in space, the multidirectional vibration (vibration) energy in space can be transmitted to the viscoelastic damping unit and the shape memory alloy rope 1 through each force transmission connection 12 unit, and the vibration (vibration) capacity is dissipated.
The vibration (vibration) energy in the main vibration direction of the structural space is mainly dissipated by the shearing deformation of the first viscoelastic material layer 3 along the axial direction, the stretching deformation of the shape memory alloy rope 1 and the tension and compression deformation of the second viscoelastic material layer 5, so that the dynamic response of the structural main vibration direction is reduced; the vibration (vibration) energy in other space directions is mainly dissipated through the simultaneous annular and axial shear deformation of the first viscoelastic material layer 3 and the second viscoelastic material layer 5 and the stretching deformation of the shape memory alloy rope 1. The whole damping system is ensured to have good energy dissipation and vibration reduction effects on the vibration (vibration) in any direction of the structural space.
The shape memory alloy rope 1 has good self-recovery capability, can effectively reduce the residual deformation of the whole damping system, and increases the deformation resistance and the recovery capability after the shock (vibration) of the whole damping system.
Claims (5)
1. A spatial multidirectional viscoelastic-shape memory alloy damping system, comprising: the device comprises an annular inner cylinder, an arc middle plate, an arc outer plate, a viscoelastic material layer, a shape memory alloy rope and a force transmission connecting unit;
a plurality of arc-shaped middle plates are arranged on the outer side of the annular inner cylinder along the circumferential direction of the annular inner cylinder, a plurality of arc-shaped outer plates are arranged on the outer side of the arc-shaped middle plates along the circumferential direction of the annular inner cylinder, a first viscoelastic material layer is arranged between the annular inner cylinder and the arc-shaped middle plates, and a second viscoelastic material layer is arranged between the arc-shaped middle plates and the arc-shaped outer plates;
a plurality of shape memory alloy ropes are arranged in the annular inner cylinder along the radial direction of the annular inner cylinder, and two ends of each shape memory alloy rope respectively penetrate through the annular inner cylinder, the first viscoelastic material layer, the arc middle plate, the second viscoelastic material layer and the arc outer plate and are fixed on the outer surface of the arc outer plate;
the outer surface of the arc-shaped outer plate is connected with a plurality of force transmission connecting units by taking the central shaft of the annular inner cylinder as the center, and the outer ends of the force transmission connecting units and the two ends of the annular inner cylinder are used for connecting a building; the arc middle plates are arranged at intervals, the arc outer plates are arranged at intervals, the arc middle plates are as long as the arc outer plates, and the arc middle plates and the arc outer plates are arranged in an internally-externally staggered manner;
the force transmission connecting unit is of a multi-section detachable tubular structure; the force transmission connecting unit can rotate along the circumferential surface of the annular inner cylinder or on a plane vertical to the circumferential surface of the annular inner cylinder by taking the joint of the arc-shaped outer plate and the arc-shaped outer plate as a fulcrum;
the annular inner cylinder, the arc middle plate, the arc outer plate and the force transmission connecting unit are made of steel pipes and/or plates.
2. The system of claim 1, wherein the damping system comprises: the interval between two adjacent arc middle plates is 30-80 mm, and the interval between two adjacent arc outer plates is 40-90 mm.
3. The system of claim 1, wherein the damping system comprises: the thickness of the arc middle plate and the thickness of the arc outer plate are both 10 mm-30 mm, the thickness of the first viscoelastic material layer is 1.5-3 times of that of the arc middle plate, and the thickness of the second viscoelastic material layer is 1.5-3 times of that of the arc outer plate.
4. The system of claim 1, wherein the damping system comprises: the annular inner cylinder comprises a left annular inner cylinder and a right annular inner cylinder which are symmetrically arranged, and the interval between the opposite ends of the left annular inner cylinder and the right annular inner cylinder is 80-150 mm; one end of the left annular inner cylinder, which is opposite to the other end of the right annular inner cylinder, exceeds the arc middle plate and the arc outer plate, and the exceeding length is 80-150 mm.
5. The system of claim 1, wherein the damping system comprises: the viscoelastic material layers are connected through high-temperature high-pressure vulcanization or strong adhesive.
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| CN202111214070.3A CN113882544B (en) | 2021-10-19 | 2021-10-19 | Spatial multidirectional viscoelastic-shape memory alloy damping system |
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| CN202111214070.3A CN113882544B (en) | 2021-10-19 | 2021-10-19 | Spatial multidirectional viscoelastic-shape memory alloy damping system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4307751A (en) * | 1979-11-29 | 1981-12-29 | Edison International, Inc. | Plate valve |
| MY176114A (en) * | 2014-12-15 | 2020-07-24 | Univ Putra Malaysia | Wall panel damping device |
| CN107514069A (en) * | 2017-09-26 | 2017-12-26 | 苏州科技大学 | Low frequency marmem intelligent Nonlinear tuned mass damper and preparation method thereof |
| CN108468394A (en) * | 2018-05-03 | 2018-08-31 | 南京林业大学 | A kind of sealing plate prefabricated PC viscoelastic damper |
| CN110080592A (en) * | 2019-04-26 | 2019-08-02 | 湖北文理学院 | A kind of multidimensional hinged ball drum type brake viscoplasticity Self-resetting shock-absorption device and its shock-dampening method |
| CN210713320U (en) * | 2019-07-25 | 2020-06-09 | 黄淮学院 | Cylindrical pulling-pressing-twisting type shape memory alloy damper |
| CN111350291B (en) * | 2020-03-23 | 2021-08-03 | 湖北文理学院 | Variable-damping variable-rigidity viscoelastic-friction composite damper |
| CN112942610B (en) * | 2021-01-29 | 2022-08-23 | 同济大学 | Composite damper based on chiral structure |
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