CN206591421U - Adjustable rigidity particle damping shock absorber - Google Patents
Adjustable rigidity particle damping shock absorber Download PDFInfo
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- CN206591421U CN206591421U CN201621475202.2U CN201621475202U CN206591421U CN 206591421 U CN206591421 U CN 206591421U CN 201621475202 U CN201621475202 U CN 201621475202U CN 206591421 U CN206591421 U CN 206591421U
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- damping spring
- spring
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Abstract
Adjustable rigidity particle damping shock absorber, is related to damper.Provided with structure fixed case, damping case, damping particle, big rigidity damping spring, small rigidity damping spring；The adjustable rigidity particle damping shock absorber by fixing bolt be connected with shock-damping structure or carry out civil engineering when be directly installed on bridge pier, abutment, beam body and it is each across superstructure in or beam bottom fulcrum at；The big rigidity damping spring and small rigidity damping spring are connected with structure fixed case, big rigidity damping spring and small rigidity damping spring are located at top and the surrounding of damping case, big rigidity damping spring and small rigidity damping spring are placed on inside damping case with stiffness variable damping spring, damping particle is combined into.Without external energy supply, install simple and easy to apply, it is easy to maintenance quick, with good economy and universality.
Description
Technical field
The utility model is related to damper, more particularly, to adjustable rigidity particle damping shock absorber.
Background technology
Current Bridge Seismic field is widely used to be had using vibration absorption and isolation support, utilizes the methods such as bridge pier ductility damping.Mesh
It is preceding study more subtract, earthquake isolating equipment mainly has laminated rubber bases, polytetrafluoroethylene bearing, lead core rubber support etc..It is poly-
Tetrafluoroethene bearing does not have the resilience performance to equilbrium position, and it is difficult control to make the relative displacement between beam body and pier, platform.
Laminated rubber bases can reduce bridge pier, platform by earthquake load, but also increase relative displacement between beam body and pier, platform, tool
There is certain limitation.Using the ductility damping of bridge pier be in current Bridge Earthquake Resistance Design frequently with method.Bridge pier ductility damping
It is that some positions of bridge pier are designed to enough ductility, is allowed to extending structure cycle, dissipation seismic energy, but this mode
The design difficulty and construction cost of bridge can be greatly increased.
Particle damping is a passive vibration control new technology, is using damping energy dissipation mechanism as theoretical foundation, mainly
Inelastic collision and rubbing action offer damping effect are passed through by the particle being filled in structural cavities.Particle damping has
Inhibition of vibration significantly, high temperature resistant adverse circumstances, to original structure change it is small, produce additional mass it is small the advantages of.Particle damping
Mechanism of production refers to the ability that vibrational energy is lost from the angle of energy, that is, by mechanical oscillation and the energy of sound and vibration
Amount, is transformed into heat energy or other energy that can be consumed.Particle damping is introduced into Bridge Seismic field can extend top
The natural vibration period of structure simultaneously gives structure larger damping, and bridge can be made to enter the plastic stage with the cycle of extending structure, increase
The flexible natural vibration period with extending structure of structure, the strong displacement power of earthquake effectively is born instead of bridge structure, reaches and subtracts
The purpose of the small earthquake load due to produced by earthquake motion；Increase structure damping or energy dissipation capability to reduce due to earthquake
Caused structural response, is particularly suitable for use in Bridge Seismic.
Chinese patent CN201801813U discloses a kind of bridge shock absorber, is arranged at the bridge cable root of drag-line bridge,
Play cushioning effect.The damper includes quoit and rubber ring, and the quoit is left by left semimetal circle and right semimetal circle
Right pairing is constituted, and rubber ring is made up of left half rubber ring and right half rubber ring or so pairing, set on the quoit internal face
There is a circle groove, corresponding to the groove, to be provided with one with matching convex for corresponding position in the rubber ring outside wall surface
Edge；The rubber ring is compound in quoit inner ring, and the flange is embedded in the groove.By pacifying in the root of drag-line
Fill the utility model bridge shock absorber, thus it is possible to vary the resonant frequency of drag-line, control amplitude, suppress the propagation of vibration wave, reduce
The fatigue of material, alleviates the factor influence such as vibrations that drag-line bridge is produced due to wind-force and vehicle, improves the use of drag-line
Life-span.
The content of the invention
The purpose of this utility model is to provide adjustable rigidity particle damping shock absorber.
The utility model is provided with structure fixed case, damping case, damping particle, big rigidity damping spring, small rigidity damping bullet
Spring；The adjustable rigidity particle damping shock absorber be connected by fixing bolt with shock-damping structure or carry out civil engineering when it is direct
Installed in bridge pier, abutment, beam body and it is each across superstructure in or beam bottom fulcrum at；The big rigidity damping spring and it is small just
Degree damping spring is connected with structure fixed case, big rigidity damping spring and small rigidity damping spring be located at the top of damping case with
Surrounding, big rigidity damping spring and small rigidity damping spring are placed on resistance with stiffness variable damping spring, damping particle is combined into
Inside Buddhist nun's case.
The rigidity of the big rigidity damping spring can be 600~2000kg/cm, and the rigidity of the small rigidity damping spring can
For 20~600kg/cm.
The damping particle can use antifriction metal (AFM), wear-resisting nonmetallic or wear-resistant macromolecule material, damp the particle diameter of particle
Can be 0.5~30mm, the section horizontal projected area of damping particle accounts for the 20%~90% of the respective partition gross area, damps particle
Density can be (1.5~18.5) × 103kg/m3。
A number of damping grain can be placed in subspace with steel plate partition into some subspaces inside the damping case
Son.
When shaking, damping case drives spring that mechanical energy is converted into elastic potential energy and dissipated, while internal resistance
Buddhist nun's particle collides the further dissipative system vibration energy of friction., can be effectively to coming because damping particle has universal property
Play a part of damping from the vibrations of all directions.Using variation rigidity damping spring can effectively mitigate wind shake and earthquake zone come
Vibrations.
When bridge vibration induced by wind, the bridge structure displacement that wind load is caused is smaller, is known by formula f=kx, if damping bullet
The damper displacement x that the excessive then bridges of coefficient of stiffiness k of spring drive also can be smaller, then cannot play effective damping and make
With.Therefore, in order to effectively mitigate wind shake, then should using the small damping springs of coefficient of stiffiness k so that damper can produce it is larger
Displacement, damping particle is effectively played cushioning effect.But when occurring earthquake, in order to accomplish that " no collapsing with strong earthquake, small shake are not
It is bad ", then the coefficient of stiffiness k of damping spring should be made to try one's best greatly.If if coefficient of stiffiness k is small, being known by formula f=kx, earthquake
The damper displacement x of drive is excessive, can be allowed to the length that can not affranchise beyond the elastic limit of damping spring, make and damping
The damper of spring connection can not produce reciprocating motion, greatly reduce the efficiency of damper damping.
The rigidity of big rigidity damping spring should be chosen in the range of 600~2000kg/cm, the rigidity of small rigidity damping spring
It should be chosen in the range of 20~600kg/cm.Such as big rigidity damping spring is selected not in above-mentioned range in stiffness, then can not be over the ground
Effective cushioning effect is played in shake；If small rigidity damping spring is selected not in above-mentioned range in stiffness, wind shake can not be played
Imitate cushioning effect.Symmetrical mode is taken to arrange during the damping spring combination of the same side arrangement different-stiffness.
The utility model has the advantage of：
The particle damping shock absorption technology for being mainly used in mechanical vibration damping field is applied in the damping of bridge, with damping
Bandwidth and the fast advantage of energy dissipation, especially with the damping spring of variation rigidity, the wind shake that can be faced for bridge and
Effective damping effect is played in the two distinct types of vibrations of earthquake, vibrations mechanical energy effectively can be converted into interparticle friction
Power consumption and the elastic potential energy of spring.Without external energy supply, install simple and easy to apply, it is easy to maintenance quick, with good warp
Ji property and universality.
Brief description of the drawings
Fig. 1 is profilograph of the present utility model.
Fig. 2 is sectional view of the present utility model of bowing.
Fig. 3 is side view of the present utility model.
Fig. 4 is the sectional view of damping case.
Embodiment
As shown in figures 1-4, the utility model embodiment is provided with structure fixed case 1, damping case 2, damping particle 3, big rigidity
Damping spring 4, small rigidity damping spring 5；The adjustable rigidity particle damping shock absorber passes through fixing bolt and shock-damping structure phase
Even or carry out civil engineering when be directly installed on bridge pier, abutment, beam body and it is each across superstructure in or beam bottom fulcrum at；
The big rigidity damping spring 4 and small rigidity damping spring 5 are connected with structure fixed case 1, big rigidity damping spring 4 and it is small just
Degree damping spring 5 is located at top and the surrounding of damping case 2, and big rigidity damping spring 4 and small rigidity damping spring 5 are be combined into can
Variation rigidity damping spring, damping particle 3 is placed on inside damping case 2.
The rigidity of the big rigidity damping spring 4 can be 600~2000kg/cm, the rigidity of the small rigidity damping spring 5
Can be 20~600kg/cm.
The damping particle 3 can use antifriction metal (AFM), wear-resisting nonmetallic or wear-resistant macromolecule material, damp the grain of particle 3
Footpath can be 0.5~30mm, and the section horizontal projected area of damping particle 3 accounts for the 20%~90% of the respective partition gross area, damping
The density of particle 3 can be 1.5~18.5 × 103kg/m3。
A number of damping grain can be placed in subspace with steel plate partition into some subspaces inside the damping case
Son.
Structure fixed case 1 be steel, be connected by fixing bolt with shock-damping structure or progress civil engineering when it is direct
Installed in bridge pier, abutment, beam body and it is each across superstructure in or beam bottom fulcrum at.Fixed according to bolt, then suggestion choosing
Use frictional high-strength bolts.Advise simultaneously, if conditions permit should be furnished with enough transverse steels in ductility areas of plasticity hinge,
It is unlikely to produce excessive shearing crack.When bridge shakes, bridge driving structure fixed case 1 shakes, and makes connection
Elastic deformation occurs for big rigidity damping spring 4, small rigidity damping spring 5 between structure fixed case 1 and damping case 2, will shake
The mechanical energy of generation is converted into the elastic potential energy of spring, while big rigidity damping spring 4, small rigidity damping spring 5 are with dynamic damping
Damping particle 3 in case 2 shakes, further will vibrations mechanical energy by damping Friction dissipation between particle.It is by thickness to damp case 2
Spend and be welded for 4mm stainless steel plate, size is determined according to actual conditions, in figure to the separation mode inside damping case 2 only
For one kind in practice, it should be determined during practice according to after engineering concrete condition simulation calculation.Damp the wear-resisting gold of particle 3
Category, wear-resisting nonmetallic or wear-resistant macromolecule material, selected particle diameter is between 0.5~30mm, different particles and mix and match, damping
The horizontal projected area of particle 3 accounts for the 20%~90% of respective regions, and density is set to (1.5~18.5) × 103kg/m3.Big rigidity
The rigidity of damping spring 4 should be chosen in the range of 600~2000kg/cm, the rigidity of small rigidity damping spring 5 should 20~
Chosen in the range of 600kg/cm.Symmetrical mode is taken to arrange during the damping spring combination of the same side arrangement different-stiffness.Work as bridge
When beam meets with wind shake, elastic deformation occurs for small rigidity damping spring 5, effectively mitigates bridge vibrations；When occurring earthquake, big rigidity
Elastic deformation occurs for damping spring 4, can effectively mitigate bridge vibrations.
Claims (5)
1. adjustable rigidity particle damping shock absorber, it is characterised in that provided with structure fixed case, damping case, damping particle, big rigidity
Damping spring, small rigidity damping spring；The adjustable rigidity particle damping shock absorber is connected by fixing bolt with shock-damping structure
Or carry out science of bridge building when be directly installed on bridge pier, abutment, beam body and it is each across superstructure in or beam bottom fulcrum at；Institute
State big rigidity damping spring and small rigidity damping spring is connected with structure fixed case, big rigidity damping spring and small rigidity damping
Spring is located at top and the surrounding of damping case, and big rigidity damping spring and small rigidity damping spring, which are matched somebody with somebody, is combined into stiffness variable damping
Spring, damping particle is placed on inside damping case.
2. adjustable rigidity particle damping shock absorber as claimed in claim 1, it is characterised in that the big rigidity damping spring it is firm
Spend for 600~2000kg/cm, the rigidity of the small rigidity damping spring is 20~600kg/cm.
3. adjustable rigidity particle damping shock absorber as claimed in claim 1, it is characterised in that the particle diameter of the damping particle is 0.5
~30mm.
4. adjustable rigidity particle damping shock absorber as claimed in claim 1, it is characterised in that the density of the damping particle is 1.5
~18.5 × 103kg/m3。
5. adjustable rigidity particle damping shock absorber as claimed in claim 1, it is characterised in that with steel plate point inside the damping case
Some subspaces are cut into, damping particle is placed in subspace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621475202.2U CN206591421U (en) | 2016-12-30 | 2016-12-30 | Adjustable rigidity particle damping shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621475202.2U CN206591421U (en) | 2016-12-30 | 2016-12-30 | Adjustable rigidity particle damping shock absorber |
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| Publication Number | Publication Date |
|---|---|
| CN206591421U true CN206591421U (en) | 2017-10-27 |
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ID=60131253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621475202.2U Active CN206591421U (en) | 2016-12-30 | 2016-12-30 | Adjustable rigidity particle damping shock absorber |
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| CN (1) | CN206591421U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702886A (en) * | 2016-12-30 | 2017-05-24 | 厦门大学 | Variable-rigidity particle damping shock absorption device suitable for bridge |
| GB2583164A (en) * | 2019-01-25 | 2020-10-21 | Univ Shijiazhuang Tiedao | Negative stiffness vibration reduction and isolation device for continuous beam |
| CN113356023A (en) * | 2021-05-27 | 2021-09-07 | 中冶华成(武汉)工程有限公司 | Combined anti-seismic connecting structure for bridge construction |
| CN114350138A (en) * | 2022-02-21 | 2022-04-15 | 南京大德减震科技有限公司 | Damping material and multidimensional damping damper |
-
2016
- 2016-12-30 CN CN201621475202.2U patent/CN206591421U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702886A (en) * | 2016-12-30 | 2017-05-24 | 厦门大学 | Variable-rigidity particle damping shock absorption device suitable for bridge |
| CN106702886B (en) * | 2016-12-30 | 2019-03-15 | 厦门大学 | A kind of stiffness variable particle damping device suitable for bridge |
| GB2583164A (en) * | 2019-01-25 | 2020-10-21 | Univ Shijiazhuang Tiedao | Negative stiffness vibration reduction and isolation device for continuous beam |
| GB2583164B (en) * | 2019-01-25 | 2021-09-08 | Univ Shijiazhuang Tiedao | Negative stiffness vibration reduction and isolation device for continuous beam |
| CN113356023A (en) * | 2021-05-27 | 2021-09-07 | 中冶华成(武汉)工程有限公司 | Combined anti-seismic connecting structure for bridge construction |
| CN114350138A (en) * | 2022-02-21 | 2022-04-15 | 南京大德减震科技有限公司 | Damping material and multidimensional damping damper |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20210802 Address after: 361000 room 520, 5 / F, Chuangye building, 1302 Jimei Avenue, Jimei District, Xiamen, Fujian Patentee after: Xiamen Lizi Technology Co.,Ltd. Address before: Xiamen City, Fujian Province, 361005 South Siming Road No. 422 Patentee before: XIAMEN University |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230706 Address after: 361000 unit 208, 2nd floor, No.3, Chengyi North Street, phase III, software park, Xiamen City, Fujian Province Patentee after: XIAMEN ZHENWEI TECHNOLOGY Co.,Ltd. Address before: 361000 room 520, 5 / F, Chuangye building, 1302 Jimei Avenue, Jimei District, Xiamen, Fujian Patentee before: Xiamen Lizi Technology Co.,Ltd. |