CN202688866U - Viscoelastic damping seismic isolation and reduction basin type rubber support - Google Patents
Viscoelastic damping seismic isolation and reduction basin type rubber support Download PDFInfo
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- CN202688866U CN202688866U CN2012204178739U CN201220417873U CN202688866U CN 202688866 U CN202688866 U CN 202688866U CN 2012204178739 U CN2012204178739 U CN 2012204178739U CN 201220417873 U CN201220417873 U CN 201220417873U CN 202688866 U CN202688866 U CN 202688866U
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- shearing
- plate
- viscoelastic damping
- steel basin
- shock insulation
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Abstract
The utility model belongs to the technical field of a basin type rubber support, and discloses a viscoelastic damping seismic isolation and reduction basin type rubber support. The support is characterized by comprising an upper base plate, a rubber bearing plate, a steel basin and a bottom base plate. A shear-resistant bloc is fixedly arranged on the bottom base plate on two sides of the steel basin, and shock-isolating friction pairs are arranged between the steel basin and the bottom base plate. When work state is normal or lower than fortification intensity, upper structure horizontal loading caused by earthquake force is smaller than shearing-resistant property of the shearing-resistant block, and the shock-isolating friction pairs do not slide relatively. Support vertical bearing force, support horizontal bearing force, displacement and rotating functional principles correspond to the functional principles of a normal basin type rubber support. When the upper structure horizontal loading caused by earthquake force is larger than the shearing-resistant property of the shearing-resistant block, the shearing-resistant block is sheared, the shock-isolating friction pairs slide relatively, and the upper structure horizontal loading is only equal to sliding friction resistance between the shock-isolating friction pairs. Therefore, effect on the upper structure due to the earthquake force larger than the sliding friction pairs is isolated.
Description
Technical field
The utility model belongs to the pot rubber bearing technical field, relates to concretely a kind of viscoelastic damping and subtracts the shock insulation pot rubber bearing.
Background technology
All adopt pot rubber bearing on the bridges such as railway, highway, in order to arrive shockproof requirements, the intensity that mainly has by structure and member self is come antidetonation, that is to say the very high of the Intensity Design of bearing own, is enough to resist large shake, can not destroy.And in practice, the damage of many local bridge constructions is not that the damage of bridge pad causes, but because traffic has been broken off in the bridge beam body landing, has hindered rescue, and caused larger casualties and property loss, for example Wenchuan County in Sichuan earthquake.In order to reach damping and isolation effect, the pot rubber bearing of using in the bridge engineering at present subtract isolation measure such as leaf spring structure, can only say that a kind of bradyseism measure can not play effective energy-dissipating and shock-absorbing effect, because experiment shows that the hysteresis loop of said structure is similar to fusiformis, there is no energy dissipation capacity, and do not comprise said structure in " Seismic Design of Highway Bridges detailed rules and regulations " (JTG/T B02-01 2008) seismic measures yet, existing antidetonation pot rubber bearing is not truly vibration absorption and isolation support in the bridge engineering thus, and the complex structure cost is high, is difficult to spread.
The utility model content
The technical problem that the utility model solves with regard to provide a kind of normally use under little shake and the service load, in middle shake, avoid the landing of beam body, viscoelastic damping simple in structure, that damping and isolation effect is good to subtract the shock insulation pot rubber bearing under shake and the severe earthquake action greatly.
For solving the problems of the technologies described above, the technical scheme that the utility model proposes is: comprise upper base plate, rubber bearing plate, steel basin and bed plate, bed plate in described steel basin both sides is fixed with shearing-resistance blocks, is provided with the shock insulation friction pair between described steel basin and described bed plate.
Its additional technical feature is:
Be provided with wear-resisting board slot at described bed plate upper surface, be provided with the steel plate groove in described steel basin bottom surface, described shock insulation friction pair comprises the wearing plate that is positioned at described wear-resisting board slot and is positioned at the corrosion resistant plate of described steel plate groove.
Be provided with spacer pin in described steel basin soffit center, in the middle of described bed plate, be provided with width greater than the spacing hole of described spacer pin; Described spacer pin inserts in the described spacing hole, lower end at described spacer pin is fixed with shearing steel plate by connecting bolt, be provided with shearing in the both sides of described spacing hole and pull groove, insert in the described shearing board slot at the two ends of described shearing steel plate, pulls in the upper and lower end face of described shear plate and described shearing and be respectively arranged with the first viscoelastic damping rubber layer and the second viscoelastic damping rubber layer between the groove.
A kind of viscoelastic damping that the utility model provides subtracts the shock insulation pot rubber bearing, compare with prior art and to have the following advantages: one, owing to comprise upper base plate, rubber bearing plate, steel basin and bed plate, bed plate in described steel basin both sides is fixed with shearing-resistance blocks, between described steel basin and described bed plate, be provided with the shock insulation friction pair, in normal operating conditions and when being lower than fortification intensity, the superstructure horizontal loading that seismic forces produces is less than the shear resistance of shearing-resistance blocks, relative sliding does not occur in the shock insulation friction pair, the bearing vertical bearing capacity, the bearing horizontal bearing capacity, displacement and rotating function principle are with conventional pot rubber bearing corresponding function principle; The superstructure horizontal loading that produces when earthquake motion is during greater than the shearing-resistance blocks shear resistance, shearing-resistance blocks will be cut off, relative sliding will occur in the shock insulation friction pair, at this moment the superstructure horizontal loading is sliding-frictional resistance between the shock insulation friction pair only, thereby has separated greater than the impact on superstructure of the seismic forces of this sliding-frictional resistance;
Its two owing to be provided with spacer pin in described steel basin soffit center, in the middle of described bed plate, be provided with width greater than the spacing hole of described spacer pin; Described spacer pin inserts in the described spacing hole, lower end at described spacer pin is fixed with shearing steel plate by connecting bolt, be provided with shearing in the both sides of described spacing hole and pull groove, insert in the described shearing board slot at the two ends of described shearing steel plate, on described shear plate, lower surface and described shearing are pulled and are respectively arranged with the first viscoelastic damping rubber layer and the second viscoelastic damping rubber layer between the groove, bed plate is in the same place with the second viscoelastic damping rubber layer integrated vulcanizing with shearing steel plate and the first viscoelastic damping rubber layer, shearing steel plate will produce the shear action that moves in circles to the first viscoelastic damping rubber layer and the second viscoelastic damping rubber layer, because visco-elastic damping material has very large Hysteretic Type Damping under the pulsating stress effect, also with the dissipative part seismic energy, thus, realize the energy-dissipating and shock-absorbing function of bearing; When the first viscoelastic damping rubber layer and the second viscoelastic damping rubber layer generation shear strain, because visco-elastic damping material has good elasticity, the the first viscoelastic damping rubber layer and the second viscoelastic damping rubber layer that produce shear strain will produce certain horizontal restoring force, thus, realize certain horizontal reset function of bearing; In order to control the horizontal movement of bearing, be provided with the Horizontal limiting pin in the bottom of steel basin, namely when the shearing strain of the first viscoelastic damping rubber layer and the generation of the second viscoelastic damping rubber layer has surpassed the shearing strain of design, the Horizontal limiting pin of the bottom of steel basin blocks limited hole, thereby prevents that bearing from producing excessive horizontal movement.
Description of drawings
Fig. 1 is the structural representation that a kind of viscoelastic damping subtracts the shock insulation pot rubber bearing;
Fig. 2 is A place enlarged drawing;
Fig. 3 is B place enlarged drawing.
The specific embodiment
The structure that a kind of viscoelastic damping that the utility model is proposed below in conjunction with accompanying drawing subtracts the shock insulation pot rubber bearing is described further.
As shown in Figure 1, subtract the structural representation of shock insulation pot rubber bearing for a kind of viscoelastic damping.Its structure comprises upper base plate 1, rubber bearing plate 2, steel basin 3 and bed plate 6, and the bed plate 6 in the both sides of steel basin 3 is fixed with shearing-resistance blocks 4, is provided with shock insulation friction pair 5 between steel basin 3 and bed plate 6.In normal operating conditions and when being lower than fortification intensity, the superstructure horizontal loading that seismic forces produces is less than the shear resistance of shearing-resistance blocks 4, relative sliding does not occur in shock insulation friction pair 5, and bearing vertical bearing capacity, bearing horizontal bearing capacity, displacement and rotating function principle are with conventional pot rubber bearing corresponding function principle; The superstructure horizontal loading that produces when earthquake motion is during greater than the shearing-resistance blocks shear resistance, shearing-resistance blocks 4 will be cut off, relative sliding will occur in shock insulation friction pair 5, at this moment the superstructure horizontal loading only is 5 sliding-frictional resistances of shock insulation friction pair, thereby has separated greater than the impact on superstructure of the seismic forces of this sliding-frictional resistance.
As shown in Figure 3, be provided with wear-resisting board slot 61 at bed plate 6 upper surfaces, be provided with steel plate groove 32 in steel basin 3 bottom surfaces, shock insulation friction pair 5 comprises the wearing plate 52 that is positioned at wear-resisting board slot 61 and the corrosion resistant plate 51 that is positioned at steel plate groove 32.
Be provided with spacer pin 31 such as Fig. 1 and Fig. 2 in the soffit center of steel basin 3, in the middle of bed plate 6, be provided with width greater than the spacing hole 65 of spacer pin 31; Spacer pin 31 inserts in the described spacing hole 65, lower end at spacer pin 31 is fixed with shearing steel plate 63 by connecting bolt 7, be provided with shearing in the both sides of spacing hole 65 and pull groove 66, the two ends of shearing steel plate 63 are inserted and are sheared in the board slot 66, on shear plate 63, lower surface and shearing are pulled and are respectively arranged with the first viscoelastic damping rubber layer 62 and the second viscoelastic damping rubber layer 64 between the groove, bed plate 6 is in the same place with the second viscoelastic damping rubber layer 64 integrated vulcanizings with shearing steel plate 63 and the first viscoelastic damping rubber layer 62, shearing steel plate 63 will produce the shear action that moves in circles to the first viscoelastic damping rubber layer 62 and the second viscoelastic damping rubber layer 64, because visco-elastic damping material has very large Hysteretic Type Damping under the pulsating stress effect, also with the dissipative part seismic energy, thus, realize the energy-dissipating and shock-absorbing function of bearing.
When the first viscoelastic damping rubber layer 62 and the 64 generation shear strains of the second viscoelastic damping rubber layer, because visco-elastic damping material has good elasticity, produce the first viscoelastic damping rubber of shear strain, the 62 and second viscoelastic damping rubber layer 64 will produce certain horizontal restoring force, thus, realize certain horizontal reset function of bearing.
In order to control the horizontal movement of bearing, when the shearing strain of the first viscoelastic damping rubber layer 62 and 64 generations of the second viscoelastic damping rubber layer has surpassed the shearing strain of design, the Horizontal limiting pin 31 of the bottom of steel basin 3 blocks limited hole 65, thereby prevents that bearing from producing excessive horizontal movement.
Protection domain of the present utility model not only is confined to above-described embodiment, and is identical as long as structure and a kind of viscoelastic damping of the utility model subtract shock insulation pot rubber bearing structure, just drops on the scope that the utility model is protected.
Claims (3)
1. a viscoelastic damping subtracts the shock insulation pot rubber bearing, comprise upper base plate, rubber bearing plate, steel basin and bed plate, it is characterized in that: the bed plate in described steel basin both sides is fixed with shearing-resistance blocks, is provided with the shock insulation friction pair between described steel basin and described bed plate.
2. a kind of viscoelastic damping according to claim 1 subtracts the shock insulation pot rubber bearing, it is characterized in that: be provided with wear-resisting board slot at described bed plate upper surface, be provided with the steel plate groove in described steel basin bottom surface, described shock insulation friction pair comprises the wearing plate that is positioned at described wear-resisting board slot and is positioned at the corrosion resistant plate of described steel plate groove.
3. a kind of viscoelastic damping according to claim 1 subtracts the shock insulation pot rubber bearing, it is characterized in that: be provided with spacer pin in described steel basin soffit center, be provided with width greater than the spacing hole of described spacer pin in the middle of described bed plate; Described spacer pin inserts in the described spacing hole, lower end at described spacer pin is fixed with shearing steel plate by connecting bolt, be provided with shearing in the both sides of described spacing hole and pull groove, insert in the described shearing board slot at the two ends of described shearing steel plate, pulls in the upper and lower end face of described shear plate and described shearing and be respectively arranged with the first viscoelastic damping rubber layer and the second viscoelastic damping rubber layer between the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204178739U CN202688866U (en) | 2012-08-22 | 2012-08-22 | Viscoelastic damping seismic isolation and reduction basin type rubber support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204178739U CN202688866U (en) | 2012-08-22 | 2012-08-22 | Viscoelastic damping seismic isolation and reduction basin type rubber support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202688866U true CN202688866U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204178739U Expired - Fee Related CN202688866U (en) | 2012-08-22 | 2012-08-22 | Viscoelastic damping seismic isolation and reduction basin type rubber support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202688866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790548A (en) * | 2014-01-17 | 2015-07-22 | 周中哲 | Vibration damper |
| CN115492254A (en) * | 2022-09-27 | 2022-12-20 | 上海市市政公路工程检测有限公司 | Sliding shock insulation support with lead core |
-
2012
- 2012-08-22 CN CN2012204178739U patent/CN202688866U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790548A (en) * | 2014-01-17 | 2015-07-22 | 周中哲 | Vibration damper |
| CN115492254A (en) * | 2022-09-27 | 2022-12-20 | 上海市市政公路工程检测有限公司 | Sliding shock insulation support with lead core |
| CN115492254B (en) * | 2022-09-27 | 2023-11-10 | 上海市市政公路工程检测有限公司 | Set up plumbous core and slide shock insulation support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20170822 |