CN108457384A - A kind of three-dimensional isolation of the adaptive stiffness characteristics of band/shake bearing - Google Patents
A kind of three-dimensional isolation of the adaptive stiffness characteristics of band/shake bearing Download PDFInfo
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- CN108457384A CN108457384A CN201810049553.4A CN201810049553A CN108457384A CN 108457384 A CN108457384 A CN 108457384A CN 201810049553 A CN201810049553 A CN 201810049553A CN 108457384 A CN108457384 A CN 108457384A
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- compressed spring
- plate
- spring
- bearing
- upper junction
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Classifications
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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
- E04B1/36—Bearings or like supports allowing movement
-
- 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
- E04H9/022—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising laminated structures of alternating elastomeric and rigid layers
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- Architecture (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The present invention be a kind of adaptive stiffness characteristics of band three-dimensional isolation/shake bearing, major part includes upper junction plate, middle makees plate, lower connecting plate, disk spring, compressed spring, pre-compressed spring, lamination lead core rubber support and fluid linking damper.Upper junction plate, middle plate and the lower connecting plate made are made of high strength low-carbon steel, have higher bearing capacity.Upper junction plate and in be mutually twisted as plate, play the role of motion guide.Disk spring, compressed spring, pre-compressed spring, lamination lead core rubber support and fluid linking damper collectively constitute vertical earthquake isolating/vibrating system.Lamination lead core rubber support, pre-compressed spring and fluid linking damper composition horizontal direction shock insulation/vibrating system.The invention belongs to a kind of passive adaptivity vibration control means, can be used for being built by influence of ambient vibration, and can have the effect of isolation earthquake motion while isolation environment vibrates.
Description
Technical field
The present invention relates to the three-dimensional isolation of the adaptive stiffness characteristics of a kind of band/shake bearing, belong to building structure shock insulation/shake neck
Domain.
Background technology
Base Isolation Technology is counted as one of most important technological progress in 20th century earthquake engineering field, in world wide
Inside has obtained relatively broad application.The basic principle of seismic isolation technology is by the way that shock isolating pedestal is arranged in construction bottom, obtains water
The smaller Seismic Isolation of Isolation Layer of flat rigidity reduces the response of superstructure seismic acceleration by filter effect.And by being arranged in Seismic Isolation of Isolation Layer
Energy-consuming device absorbs consumption earthquake energy.Modern seismic isolation technology has nearly 60 years history, belongs to a kind of passive vibration control
Technology processed.
However, there are deficiencies below for existing traditional architecture shock isolating pedestal at present：First, vertical seismic action/shake cannot be isolated
Dynamic and horizontal direction micro-vibration.A large amount of earthquake observations and finite element analysis show that Vertical Earthquake Loads can cause structure vertically to be held
Press component compression damage.With Urban Rail Transit Development, the ambient vibrations such as subway, the especially vertical component of micro-vibration can be right
The residence comfort of people generates more serious influence.Second is that traditional shock isolating pedestal in the horizontal direction there is obtain compared with
The contradiction of good isolating affection and control Seismic Isolation of Isolation Layer extreme displacement.Usually, the smaller Seismic Isolation of Isolation Layer of horizontal rigidity is set, can be taken
Obtain better isolating affection.But meanwhile too small horizontal rigidity can lead to excessive Seismic Isolation of Isolation Layer displacement, and lower structure is acted in big shake
Safety be difficult to ensure.
Invention content
It is an object of the invention to overcome the deficiencies in the prior art, propose a kind of adaptive stiffness characteristics of band it is three-dimensional every
Bearing is shaken/shaken, to vertical seismic action and environment micro-vibration and horizontally vibrations etc. there can be good shock insulation/effect of shaking.
A kind of three-dimensional isolation of the adaptive stiffness characteristics of band proposed by the present invention/shake bearing, including upper junction plate 1, middle work
Plate 2, lower connecting plate 3, disk spring 4, compressed spring 5, lamination lead core rubber support 6, pre-compressed spring 7 and fluid linking damper 8,
In：Lamination lead core rubber support 6 be located at lower connecting plate 3 and in make plate 2 between, it is middle to make to be provided with the first groove, compressed spring on plate 2
2 first groove position of plate is made in 5 one end in stretching into, disk spring 4 is placed on outside compressed spring 5, and disk spring 4 makees plate 2 in being positioned over
Top, 1 bottom of upper junction plate are provided with the second groove, and 5 other end of compressed spring stretches into 1 second groove of upper junction plate, middle to make plate 2
Both sides have been arranged symmetrically fluid linking damper 8, and 1 bottom of upper junction plate is fixed in the both ends of fluid linking damper 8 by spherical shape hinge 9 respectively
With 3 top of lower connecting plate, pre-compressed spring 7 is placed on outside fluid linking damper 8, and pre-compressed spring 7 can realize upper junction plate 1 and lower connection
Bi-directional horizontal movement between plate 3；The middle part of lamination lead core rubber support 6 is provided with lead for retractable pencil, and can dissipate horizontal movement and perpendicular simultaneously
To the energy of movement；Vertical in the three-dimensional isolation/bearing that shakes, disk spring 4 and compressed spring 5 are in parallel, when operating, disk spring
4 provide vertical negative stiffness, and compressed spring 5 provides positive rigidity, system can be made vertically to be in zero stiffness after the two superposition；Three
Shock insulation/bearing horizontal direction of shaking is tieed up, lamination lead core rubber support 6 and pre-compressed spring 7 are in parallel, three-dimensional isolation/bearing horizontal direction of shaking fortune
When dynamic smaller, horizontal negative stiffness can be provided for system, to reduce the horizontal rigidity of system；When three-dimensional isolation/shake support displacement compared with
When big, pre-compressed spring 7 provides positive rigidity, the horizontal direction shock insulation/vibrating system by being pre-designed the decrement of pre-compressed spring 7,
So that horizontal direction shock insulation/vibrating system has and the relevant adaptive stiffness characteristics of horizontal displacement.
In the present invention, fluid linking damper 8 and lead for retractable pencil can be simultaneously the vertical and horizontal direction of bearing movement consumption energy.
In the present invention, upper junction plate 1 and in make plate 2 and be mutually twisted, realize motion guide design.
In the present invention, in static and motion state, disk spring 4, compressed spring 5 and pre-compressed spring 7 are held bearing jointly
Carry superstructure.
In the present invention, 7 both ends of pre-compressed spring are welded to connect with 9 ends of spherical shape hinge respectively, and pre-compressed spring 7 can tension.
In the present invention, upper junction plate and the middle relative horizontal displacement made between plate and corner are locked, are only capable of generating vertical
Displacement, the decoupling for making bearing vertical motion and horizontal direction move.Realize that the purpose one of mobile decoupling is to make vertical earthquake isolating/shaking is
System and horizontal direction shock insulation/relatively independent work of vibrating system, second is that make bearing under geological process, on make plate and in make not having between plate
There is relative level to displacement and corner, avoids the effect of waving that bearing is excessive.
It is vertical in bearing in the present invention, by Hookean spring（Compressed spring 5）With the carrying in parallel of disk spring 4, have higher
Vertical bearing capacity.When bearing is installed to shock insulation/shake layer, for disk spring 4 close to flattening, bearing 6 is in running order.At this point,
Disk spring 4 provides vertical negative stiffness, and Hookean spring provides positive rigidity, system can be made vertically to be in zero stiffness after the two superposition
State.System in vertical zero stiffness state being capable of efficiently separating building ambient vibration and vertical seismic action.
It is in parallel by lamination lead core rubber support 6 and Hookean spring (pre-compressed spring 7) in bearing horizontal direction in the present invention.By
Precompression in spring exists, and when the movement of bearing horizontal direction is smaller, horizontal negative stiffness can be provided for system and reduces system
Horizontal rigidity is conducive to obtain good shock insulation/effect of shaking；When shock insulation/layer displacement of shaking is larger, compressed spring provides horizontal just rigid
Degree, system stiffness is larger at this time is conducive to control shock insulation/structural limits of shaking state bottom offset.
In the present invention, fluid linking damper 8 is arranged vertically, connects upper and lower connecting plate, and can dissipate horizontal movement and perpendicular simultaneously
To the energy of movement.
In the present invention, fluid linking damper 8 is positioned among pre-compressed spring 7, prevents 7 unstability of pre-compressed spring.
The principle of the present invention is：
The present invention is in lamination lead rubber laminated bearing（This is already belonging to the prior art）On the basis of, by the way that adaptive rigidity is arranged
Device solves the deficiency of traditional shock isolating pedestal.Adaptive rigidity, which refers to the rigidity of system, to be generated with the displacement of system
Variation, belongs to a kind of passive non-linear attributes.The rigidity adaptive of bearing is specifically referred to when displacement is smaller in the present invention, branch
Seat provides smaller rigidity；When displacement is larger, bearing provides greater stiffness.
It is vertical in bearing, pass through disk spring 4 in parallel and Hookean spring（Compressed spring 5）, obtain with rigidity adaptive
Quasi- zero stiffness shock insulation/vibration body system of property.Quasi- zero stiffness system refers to the system close to zero in system balancing position stiffness.Standard zero is just
Degree shock insulation/vibrating system be a kind of shock insulation/vibrating system of strong linear Stiffness, can well solve normal linear vibrating isolation system every
Shake/shake the contradiction between initial frequency and bearing capacity.Meanwhile quasi- zero stiffness shock insulation/vibration body system be it is a kind of it is passive it is non-linear every
Shake/vibrating system does not need extraneous offer energy, can also obtain lower static rigidity by regulating system parameter appropriate
With higher dynamic rate, on the basis of ensureing bearing capacity with good low frequency shock insulation/performance of shaking, for subway etc.
Ambient vibration and earthquake motion vertical component have preferable shock insulation/effect of shaking.Simultaneously because its provided in big displacement state it is larger
Rigidity, thus can well under control limit state displacement.
It is obtained adaptive with rigidity by lamination lead core rubber support 6 in parallel and pre-compressed spring 7 in bearing horizontal direction
The shock insulation of answering property/vibration body system.Lamination lead core rubber support 6 provides horizontal direction linear rigidity while vertical pressure-bearing, when shock insulation/
When layer displacement of shaking is smaller, compressed spring 5 provides horizontal negative stiffness for system, at this time system stiffness it is smaller be conducive to obtain it is good
Shock insulation/effect of shaking；When shock insulation/layer displacement of shaking is larger, compressed spring 5 provides horizontal positive rigidity, and system stiffness is larger at this time has
Conducive to control shock insulation/structural limits of shaking state bottom offset.
In the present invention, the disk spring in vertical earthquake isolating/vibrating system, Hookean spring etc. and horizontal direction shock insulation/vibrating system
In lamination lead core rubber support and pre-compressed spring etc. size and performance parameter, can be according to Practical Project situation and different
Earthquake fortification level and vibration control demand are designed.There are stronger flexibility and future in engineering applications.
The three-dimensional isolation of the adaptive stiffness characteristics of novel belt/shake bearing and traditional shock isolating pedestal (such as rubber earthquake isolation support,
Friction-pendulum shock-insulation support etc.) it compares, it is an advantage of the invention that：
(1) vertical earthquake isolating/vibrating system can rise with adaptive stiffness characteristics and in characteristic of the equilbrium position with quasi- zero stiffness
To the effect of good isolation environment vibration and vertical seismic motion.
(2) there are horizontal direction shock insulation/vibrating system adaptive stiffness characteristics, energy level of isolation ambient vibration simultaneously to provide more
Safety under superior horizontal seismic isolation effect and the big shake effect of guarantee.
(3) fluid linking damper and lead for retractable pencil can consume inputting seismic energy.
The three-dimensional isolation of the adaptive stiffness characteristics of novel belt/shake bearing and conventional building construction vibration isolation measure (such as thick meat
Vibration isolating suspension, vibration isolation ditch etc.) it compares, it is an advantage of the invention that：
(1) three-dimensional ambient vibration can be more effectively isolated in vertical and horizontal direction in the present invention.It is embodied in：Work as system
It is acted on by micro-vibration in equilbrium position, displacement is smaller.Due to adaptive stiffness characteristics, system stiffness at this time is smaller, system
Intrinsic frequency is smaller or even close to zero, to have lower vibration isolation initial frequency.It is substantially superior to traditional linear vibration isolation
Measure.
(2) present invention has higher safety when meeting with judder effect (such as violent earthquake, vehicular impact etc.).
It is embodied in：When system compared with strong vibration by acting on, displacement is larger.Due to adaptive stiffness characteristics, system stiffness at this time
It is larger, can limiting structure there is over-large displacement.
(3) fluid linking damper and lead for retractable pencil can consume vibration input energy.
Description of the drawings
Fig. 1 is the sectional view that the present invention is in original state；
Fig. 2 is the three-dimensional installation diagram of the present invention；
Fig. 3 be the present invention installation and shock insulation/shake a layer schematic diagram；
Fig. 4 is fluid linking damper organigram；
Fig. 5 is lamination lead core rubber support organigram；
Figure label：1 upper junction plate makees plate, 3 lower connecting plates, 4 disk springs, 5 compressed springs, 6 lamination lead for retractable pencil rubbers in 2
Glue bearing, 7 pre-compressed springs, 8 fluid linking dampers, 9 spherical shapes are cut with scissors, built-in fitting on 10,11 times built-in fittings, and 12 shock insulations/shake layer
Upper styletable, styletable under the 13 shock insulations/layer that shakes, 14 guide rods, 15 pistons, 16 damping holes, 17 resisting mediums, 18 lamination lead for retractable pencil rubbers
Glue bearing upper sealing plate, 19 lead for retractable pencils, sealing plate under 20 lamination lead core rubber supports, 21 rubber layers, 22 steel plate layers, 23 rubber are protected
Sheath.
Specific implementation mode
The invention will be further described for illustrated embodiment below in conjunction with the accompanying drawings.
Embodiment 1：
Shown in Fig. 1, the present invention by upper junction plate 1, middle make plate 2, lower connecting plate 3, disk spring 4, compressed spring 5, lamination lead for retractable pencil
Rubber support 6,9 composition of pre-compressed spring 7, fluid linking damper 8 and spherical hinge.Lamination lead core rubber support 6 and disk spring 4 and pressure
The Cascade System that contracting spring 5 forms is pressurized；Fluid linking damper 8 is positioned among pre-compressed spring 7；Fluid linking damper 8 and precompressed bullet
7 upper and lower ends of spring are two-way hinged with upper junction plate 1 and lower connecting plate 3 respectively using spherical hinge.
Upper junction plate 1 is made plate 2 in and is mutually twisted, and can only realize relative vertical motion.
The gravity of top shock insulation/structure of shaking is conducted by upper junction plate 1, by disk spring 4, compressed spring 5 and precompressed bullet
7 shared of spring, fluid linking damper 8 do not stress when static.Compressed spring 5 and upper junction plate 1 and in make plate 2, pre-compressed spring
It is welded to connect with 9 ends of spherical shape hinge, pre-compressed spring can tension.Fluid linking damper 8, which is placed in pre-compressed spring 7, prevents spring unstability,
And it is welded to connect with 9 ends of spherical shape hinge.9 are cut with scissors by the combination of pre-compressed spring 7 and fluid linking damper 8 and upper junction plate 1 using spherical shape
It is realized with lower connecting plate 3 two-way hinged.Lamination lead core rubber support 6 makees plate 2 in and lower connecting plate 3 is close by built-in bolt
Connection.
Fig. 2 is the three-dimensional installation diagram of the present invention, illustrates the correlation between each component.
Fig. 3 is the organigram that the present invention is installed on the shock insulation/layer that shakes.Upper built-in fitting 10 and lower built-in fitting 11 pass through respectively
The mode poured is embedded in shock insulation/styletable 12 and shock insulation on the layer that shakes/styletable under the layer that shakes.By bearing capacity deformation design, at this time
Disk spring 4, which is in, to be flattened near position.Compressed spring 5 and pre-compressed spring 7 are in artesian condition.
Fig. 4 is fluid linking damper construction signal.Guide rod 14 is fastenedly connected with piston 15, and band piston 15 is situated between in viscous damping
It is moved in matter 17, plays the role of energy consumption.
Fig. 5 is lamination lead core rubber support organigram.Upper sealing plate 18 and lower sealing plate 20 play bearing and other components
Connection function.Rubber protective layer 23 plays isolation support body (lead for retractable pencil 19, rubber layer 21 and steel plate layer 22) and external environment
Effect, enhance bearing durability.
It is the representative instance of the present invention above, implementation of the invention is without being limited thereto.
Claims (4)
1. a kind of three-dimensional isolation of the adaptive stiffness characteristics of band/shake bearing, including upper junction plate (1), middle make plate (2), lower connection
Plate (3), disk spring（4）, compressed spring（5）, lamination lead core rubber support（6）, pre-compressed spring (7) and fluid linking damper（8）,
It is characterized in that：Lamination lead core rubber support（6）Positioned at lower connecting plate (3) and in make plate (2) between, it is middle to make to be provided on plate (2)
(2) first groove position of plate, disk spring are made in first groove, compressed spring (5) one end in stretching into（4）It is placed on compressed spring (5)
Outside, disk spring (4) is made in being placed directly in above plate (2), and upper junction plate (1) bottom is provided with the second groove, compressed spring (5)
The other end stretches into (1) second groove of upper junction plate, and middle plate (2) both sides of making have been arranged symmetrically fluid linking damper（8）, viscous damping
Device（8）Both ends (9) cut with scissors by spherical shape be respectively fixed at the top of upper junction plate (1) bottom and lower connecting plate (3), pre-compressed spring
(7) it is placed on fluid linking damper（8）Outside, pre-compressed spring (7) can be realized two-way between upper junction plate (1) and lower connecting plate (3)
Horizontal movement；Lamination lead core rubber support（6）Middle part is provided with lead for retractable pencil, the energy of can dissipate simultaneously horizontal movement and vertical motion
Amount；Vertical in the three-dimensional isolation/bearing that shakes, disk spring (4) and compressed spring (5) are in parallel, and when operating, disk spring (4) carries
For vertical negative stiffness, compressed spring (5) provides positive rigidity, system can be made vertically to be in zero stiffness after the two superposition；Three
Tie up shock insulation/bearing horizontal direction of shaking, lamination lead core rubber support（6）With pre-compressed spring (7) parallel connection, three-dimensional isolation/bearing level of shaking
To when moving smaller, horizontal negative stiffness can be provided for system, to reduce the horizontal rigidity of system；When three-dimensional isolation/branch of shaking seat
When moving larger, pre-compressed spring (7) provides positive rigidity, and the horizontal direction shock insulation/vibrating system is by being pre-designed pre-compressed spring (7)
Decrement so that horizontal direction shock insulation/vibrating system has and the relevant adaptive stiffness characteristics of horizontal displacement.
2. the three-dimensional isolation of the adaptive stiffness characteristics of band according to claim 1/shake bearing, it is characterised in that：Viscid resistance
Buddhist nun's device（8）Can be the vertical and horizontal direction movement consumption energy of bearing simultaneously with lead for retractable pencil.
3. the three-dimensional isolation of the adaptive stiffness characteristics of band according to claim 1/shake bearing, it is characterised in that：Upper connection
Plate (1) and in make plate (2) and be mutually twisted, realize motion guide design.
4. the three-dimensional isolation of the adaptive stiffness characteristics of band according to claim 1/shake bearing, it is characterised in that：Precompressed bullet
Spring (7) both ends are welded to connect with spherical shape hinge (9) end respectively, and pre-compressed spring (7) can tension.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810049553.4A CN108457384B (en) | 2018-01-18 | 2018-01-18 | A kind of three-dimensional isolation/vibration support of the adaptive stiffness characteristics of band |
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| CN201810049553.4A CN108457384B (en) | 2018-01-18 | 2018-01-18 | A kind of three-dimensional isolation/vibration support of the adaptive stiffness characteristics of band |
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| CN108457384A true CN108457384A (en) | 2018-08-28 |
| CN108457384B CN108457384B (en) | 2019-10-18 |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594673A (en) * | 2019-01-25 | 2019-04-09 | 黄淮学院 | One kind linking two-way shock isolating pedestal system |
| CN109610668A (en) * | 2018-12-26 | 2019-04-12 | 深圳防灾减灾技术研究院 | The disk spring group of shock isolating pedestal |
| CN109667356A (en) * | 2018-12-26 | 2019-04-23 | 深圳防灾减灾技术研究院 | Spring friction isolation support |
| CN109763581A (en) * | 2019-03-06 | 2019-05-17 | 李鑫 | Building structure basic module with three-dimensional isolation vibration damping |
| CN110094445A (en) * | 2019-03-28 | 2019-08-06 | 沈阳远大装备科技有限公司 | Quasi- zero stiffness vibrating isolation system |
| CN110159691A (en) * | 2019-06-05 | 2019-08-23 | 西北工业大学 | A kind of big damping isolator of complex stiffness |
| CN110360065A (en) * | 2019-07-15 | 2019-10-22 | 大连理工大学 | A kind of vibration absorber for Large Scale Oceanic Wind Power Generation machine tower top |
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| CN110645312A (en) * | 2019-10-09 | 2020-01-03 | 广州大学 | Vertical damping support of multifrequency section |
| CN110924550A (en) * | 2019-11-25 | 2020-03-27 | 华北理工大学 | Shock insulation support with normal damping characteristic and tensile function |
| CN111156287A (en) * | 2019-12-31 | 2020-05-15 | 武汉理工大学 | Vibration isolation device with adjustable horizontal rigidity and vertical rigidity |
| CN111336204A (en) * | 2020-02-14 | 2020-06-26 | 同济大学 | Vertical vibration isolation device |
| CN111828734A (en) * | 2020-07-24 | 2020-10-27 | 哈尔滨工业大学 | Vibration isolator for pipeline support |
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| CN115030983A (en) * | 2022-05-18 | 2022-09-09 | 广东明阳电气股份有限公司 | Shock insulation support and transformer with same |
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| CN115324205A (en) * | 2022-09-15 | 2022-11-11 | 株洲时代新材料科技股份有限公司 | Quasi-zero-rigidity vertical shock isolator, design method thereof and three-dimensional shock isolation device |
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| CN109610668A (en) * | 2018-12-26 | 2019-04-12 | 深圳防灾减灾技术研究院 | The disk spring group of shock isolating pedestal |
| CN109667356A (en) * | 2018-12-26 | 2019-04-23 | 深圳防灾减灾技术研究院 | Spring friction isolation support |
| CN109594673A (en) * | 2019-01-25 | 2019-04-09 | 黄淮学院 | One kind linking two-way shock isolating pedestal system |
| CN109763581A (en) * | 2019-03-06 | 2019-05-17 | 李鑫 | Building structure basic module with three-dimensional isolation vibration damping |
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