CN203160284U - Saturation multi-hole rubber vibration reducing and isolating device - Google Patents
Saturation multi-hole rubber vibration reducing and isolating device Download PDFInfo
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- CN203160284U CN203160284U CN 201320024117 CN201320024117U CN203160284U CN 203160284 U CN203160284 U CN 203160284U CN 201320024117 CN201320024117 CN 201320024117 CN 201320024117 U CN201320024117 U CN 201320024117U CN 203160284 U CN203160284 U CN 203160284U
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Abstract
The utility model provides a saturation multi-hole rubber vibration reducing and isolation device, belongs to the technical field of vibration reducing and isolation devices, and aims at providing the saturation multi-hole rubber vibration reducing and isolation device which is composed of a sand cushion layer (1) and a multi-hole rubber board (2). The multi-hole rubber board (2) is a multi-hole board with an inner layer which is made of rubber, through holes are formed in the inner layer, the holes are filled with vibration reducing liquid, the surfaces of the holes are in a sealed state, a plurality of types of materials are combined to form the rubber, and the rubber has certain damping performance due to the friction among molecules inside the rubber. Due to the friction energy consumption of the sand cushion layer, the energy consumption caused by mutual coupling of liquid and solid in the saturation multi-hole rubber board and the fact that liquid saturation materials effectively absorb fluctuant energy, vibration is effectively prevented from spreading outwards, and therefore an aim of reducing and isolating the vibration is achieved.
Description
Technical field
The utility model belongs to vibration damping and vibration isolation device technique field, is specifically related to a kind of saturated expanded rubber vibration damping and vibration isolation device.
Background technology
Along with the fast development of modern society and science and technology, the use power of various machines constantly promotes, and volume develops to miniaturization, and speed is also more and more faster, and the thing followed is to vibrate having a strong impact on of causing.In vibrationproof vibration damping field, rubber engenders in people's the visual field.Elastomeric material is because specific modality and the performance that himself has, the modular ratio that can align is lower, intrinsic damp is again than higher, can do not destroyed under the big strain, under certain mode of texturing, can bear high load capacity simultaneously, thereby be widely used in every field such as industrial production and living facilities, especially it shows the distinguishing feature that cushions and alleviate the vibration aspect, and it is used aspect vibration damping fully.
Vibration damping is the main means that prevent hazard of vibration on the engineering, and vibration damping can be divided into active damping and passive vibration damping.Active damping is energy or the frequency of just considering the elimination vibration source or reduce vibration source when design, in precision instrument, aerospace equipment, large turbo-type generator group and high-speed rotating machine, use more, but expense costliness, use less in the common engineering machinery, vibration isolation can be divided into active vibration isolation and passive vibration isolation again, and passive vibration damping has vibration isolation and absorbing etc.Suitable increase damping (damping shock absorption) wherein refers to the energy of damping absorption system vibration, and the amplitude of free vibration is decayed rapidly, for the amplitude of forced vibration inhibitory action is arranged, and is especially very remarkable in resonance region.
Subway has following advantage as a kind of mode of transportation: large conveying quantity, safety, quick, punctual, convenient, comfortable; No air pollution meets the metropolis principle of sustainable development; And there is the good interaction relation between urban economy and the social development.But along with the fast development of subway construction, some negative effects are found in succession, wherein it is worth noting most the vibration that the subway operation is brought out.The general buried depth of subway tunnel is more shallow relatively, and the vibration that the subway operation produces passes to tunnel support structure (pier of tunnel basis and lining cutting or bridge and basis thereof) by track, and then outwards propagates by rock soil medium, brings out the secondary vibration of building.The subway in part location moves on the ground, vibrates more violent.
Therefore, subway railway roadbed material adopts the concrete cast usually, and it is thick that the thickness of ballast bed height in subway interval is generally 70-80cm, road, basis bed height is approximately 35cm, usually railway roadbed adopts the concrete cast of C35, belongs to the rigidity railway roadbed, and what effect vibration damping and vibration isolation is not just had.General subway engineering mainly adopts measures such as floating slab railway roadbed, elastic short rail sleeper formula monolithic roadbed track, shock absorber fastener to carry out damping, but these measures are difficult to reach vibration damping and vibration isolation effect well, vibration attenuation 10-15 dB.
People generally reduce the subway vibrations by following several method: adopt the above heavy rail of 60kg/m, and adopt gapless track, gapless track can eliminate wheel to the bump of rail joint as far as possible; Alleviate the unsprung mass of vehicle, avoid vehicle and track to produce resonance, can reduce oscillation intensity 10-15dB like this; Suitably increase the subway buried depth, make vibration amplitude add high attenuation with distance (degree of depth); Adopt heavier tunnel structure also can reduce Oscillation Amplitude; Adopt suitable railway roadbed and track structure pattern, increase the elasticity of track, set up the less rubber mat plate of quiet stiffness factor, vibration attenuation reaches 10-15dB.Though obtain certain effect though above glissando has, long-term periodic vibration causes that still subway ground accumulative total becomes the continuous increase of distortion.
How to solve effectively because a series of problems such as the foundation vibration that dynamic loading causes and noise have great significance.After subway puts into effect, the tunnel will bear periodically dynamic load function, consequent low frequency vibration in ground the rate of decay much smaller than dither, its propagation distance is farther, influence basin is wider, adjacent structure and underground utilities, precision instrument and equipment etc. are had very important influence, and the secondary vibration of the surrounding structure that brings out thus and noise have played showing great attention to of people; In addition, in ground was handled, it was to adopt the method for dynamic reinforcement to handle that many measures are arranged, and as dynamic compaction, vibration sinking tube method, power driving method etc., the ground that causes thus and the vibration of surrounding environment have had a strong impact on people's normal life.Traditional vibration isolating method such as vibration isolate ditch, diaphragm wall etc. have the better damping effect to dither, and the slower low frequency vibration of decay is then needed enough degree of depth, often are difficult to realize making effectiveness in vibration suppression not good.
Summary of the invention
The purpose of this utility model provides a kind of saturated expanded rubber vibration damping and vibration isolation device, because power consumption is closed in the mutual coupling of stream-solid phase in the friction energy-dissipating of sand cushion and the saturated expanded rubber plate, and the hold-up material has absorbed the energy of fluctuation effectively, can stop vibration outwards to be propagated effectively, thereby reach the purpose of vibration damping and vibration isolation.
The utility model is achieved through the following technical solutions:
A kind of saturated expanded rubber vibration damping and vibration isolation device is characterized in that: be made of sand cushion 1 and expanded rubber plate 2, described expanded rubber plate 2 is made internal layer by the porous plate of porosity communication for rubber, is filled by damping fluid in the hole, and the surface is sealing state.
Described sand cushion 1 is two-layer up and down, and middle one deck is expanded rubber plate 2.
Described sand cushion 1 thickness is 20 ~ 30mm.
Described sand cushion 1 is sand pocket bed course, sand-gravel cushion, earth bag accumulation horizon, modified bitumen shock insulation pad or reinforcing bar-pitch composite shock insulation layer.
The beneficial effects of the utility model:
Described expanded rubber vibration damping and vibration isolation device, the expanded rubber plate 2 that is had damping fluid by up and down two-layer sand cushion 1 and middle one deck constitutes, and rubber is formed by multiple combination of materials, and the friction between the rubber interior molecules makes it have certain damping capacity.Because power consumption is closed in the mutual coupling of stream-solid phase in the friction energy-dissipating of sand cushion and the saturated expanded rubber plate, reach the energy that the hold-up material has absorbed fluctuation effectively, can stop vibration outwards to be propagated effectively, thereby reach the purpose of vibration damping and vibration isolation.
Description of drawings
Fig. 1 is the utility model preferred embodiment plane of structure sectional view.
Fig. 2 is the utility model preferred embodiment expanded rubber plate elevation.
Among the figure, sand cushion 1, expanded rubber plate 2, damping fluid 3, ground 4.
The specific embodiment
Below in conjunction with accompanying drawing the utility model preferred embodiment is described further:
A kind of saturated expanded rubber vibration damping and vibration isolation device, as shown in Figure 1, the excavation pit filling thickness is the sand cushion 1 of 20 ~ 30mm, place one deck expanded rubber plate 2 behind the vibration compacting thereon, described expanded rubber plate 2 is made internal layer by the porous plate of porosity communication for rubber, as shown in Figure 2, is filled by damping fluid in the hole, the surface is sealing state, re-lays one deck 20 ~ 30mm sand cushion 1 then on expanded rubber plate 2.
Its device vibration damping and vibration isolation operating principle is, ground sand cushion 1 has the damper performance under certain condition, be arranged with one deck expanded rubber plate 2 at ground sand cushion 1, interior by damping fluid 3 fillings, when saving cost, utilize or increase the partly flexibility of basic unit, increase the damping of ground, part is shaken and can be dissipated in the ground by hysteresis and the wave radiation effect of foundation soil, distortion when making foundation vibration focuses on the flexible ground, energy avoided the destruction of building structure to guarantee building safety to the transmission of superstructure when the acceleration response of minimizing superstructure was vibrated.Ground sand cushion 1 refers to the foundation soil of bordering on the structural rigidity basis, when it bears horizontal loading, load is evenly distributed on rubbing surface, changes the frictional force size between rigid foundation and the ground.Can be as ground vibration damping and vibration isolation layer material be sand cushion 1, sand pocket bed course, sand-gravel cushion, earth bag accumulation body, modified bitumen shock insulation pad or reinforcing bar-materials such as pitch composite shock insulation layer.
Claims (4)
1. saturated expanded rubber vibration damping and vibration isolation device, it is characterized in that: constituted by sand cushion (1) and expanded rubber plate (2), described expanded rubber plate (2) is made internal layer by the porous plate of porosity communication for rubber, is filled by damping fluid in the hole, and the surface is sealing state.
2. a kind of saturated expanded rubber vibration damping and vibration isolation device according to claim 1 is characterized in that: described sand cushion (1) is for two-layer up and down, and middle one deck is expanded rubber plate (2).
3. a kind of saturated expanded rubber vibration damping and vibration isolation device according to claim 1, it is characterized in that: described sand cushion (1) thickness is 20 ~ 30mm.
4. a kind of saturated expanded rubber vibration damping and vibration isolation device according to claim 1 is characterized in that: described sand cushion (1) is sand pocket bed course, sand-gravel cushion, earth bag accumulation horizon, modified bitumen shock insulation pad or reinforcing bar-pitch composite shock insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320024117 CN203160284U (en) | 2013-01-17 | 2013-01-17 | Saturation multi-hole rubber vibration reducing and isolating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320024117 CN203160284U (en) | 2013-01-17 | 2013-01-17 | Saturation multi-hole rubber vibration reducing and isolating device |
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| Publication Number | Publication Date |
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| CN203160284U true CN203160284U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320024117 Expired - Fee Related CN203160284U (en) | 2013-01-17 | 2013-01-17 | Saturation multi-hole rubber vibration reducing and isolating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695974A (en) * | 2015-03-06 | 2015-06-10 | 北京城建设计发展集团股份有限公司 | Shock absorbing method and structure for rail traffic underground engineering |
| CN107366200A (en) * | 2017-08-03 | 2017-11-21 | 华东交通大学 | A kind of particle damping energy dissipation vibration damping railway ballast pad |
| CN114687385A (en) * | 2022-03-16 | 2022-07-01 | 浙江工业大学 | Periodic cushion layer of vibration reduction and isolation barrier of subway tunnel |
-
2013
- 2013-01-17 CN CN 201320024117 patent/CN203160284U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695974A (en) * | 2015-03-06 | 2015-06-10 | 北京城建设计发展集团股份有限公司 | Shock absorbing method and structure for rail traffic underground engineering |
| CN107366200A (en) * | 2017-08-03 | 2017-11-21 | 华东交通大学 | A kind of particle damping energy dissipation vibration damping railway ballast pad |
| CN107366200B (en) * | 2017-08-03 | 2023-08-15 | 华东交通大学 | Particle damping energy-dissipation vibration reduction ballast pad |
| CN114687385A (en) * | 2022-03-16 | 2022-07-01 | 浙江工业大学 | Periodic cushion layer of vibration reduction and isolation barrier of subway tunnel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20140117 |