CN111395157A - Annular rubber multi-dimensional damping support - Google Patents
Annular rubber multi-dimensional damping support Download PDFInfo
- Publication number
- CN111395157A CN111395157A CN201910004088.7A CN201910004088A CN111395157A CN 111395157 A CN111395157 A CN 111395157A CN 201910004088 A CN201910004088 A CN 201910004088A CN 111395157 A CN111395157 A CN 111395157A
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- China
- Prior art keywords
- damping
- foamed aluminum
- annular
- support
- annular rubber
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Links
- 238000013016 damping Methods 0.000 title claims abstract description 44
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 11
- 230000035939 shock Effects 0.000 claims description 17
- 238000010521 absorption reaction Methods 0.000 claims description 16
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 230000000452 restraining effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 6
- 239000004411 aluminium Substances 0.000 abstract 2
- 239000006260 foam Substances 0.000 abstract 2
- 238000005265 energy consumption Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/041—Elastomeric bearings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention belongs to the technical field of bridge structure vibration control, and provides an annular rubber multidimensional damping support which comprises an anti-seismic pin, an annular steel partition plate, a foamed aluminum damping layer and a high-damping rubber annular rubber body. The temperature change causes the motion of girder for the pier, and the antidetonation round pin can extrude foam aluminium shock-absorbing shell and high damping rubber body around it, because the elastic modulus of rubber and foam aluminium is all less, therefore the temperature deformation causes the extrusion force of antidetonation round pin also less, can not cause the damage of pier and support. When an earthquake occurs, the main beam generates large movement relative to the bridge pier in a short time, the anti-seismic pin can rapidly extrude the foamed aluminum shock-absorbing layer, foamed aluminum has a strong energy-consuming and vibration-absorbing effect, when the extrusion stress of the anti-seismic pin on the foamed aluminum shock-absorbing layer is outwards transmitted to the annular rubber area, the stress is weakened, the high-damping rubber body continuously consumes the residual kinetic energy of the structure and releases the extrusion stress, so that the impact of the earthquake on the main beam is buffered, and the bridge pier and the support are protected from being damaged more greatly.
Description
Technical Field
The invention belongs to the technical field of vibration control of bridge structures, relates to a damping technology of bridges, and particularly relates to an annular rubber multi-dimensional damping support.
Background
When the temperature of the curve beam bridge changes, the main beam not only generates longitudinal displacement, but also generates transverse displacement. Therefore, in the design of the multi-span continuous curve beam, the main beam is generally allowed to stretch in the longitudinal bridge direction and the transverse bridge direction, and the support is accordingly allowed to have a gap in the longitudinal direction and the transverse direction. However, when an earthquake occurs, the displacement and the direction of the main beam are uncertain, which causes the collision at the gap of the support, causes the damage of the support and even crises the safety of the bridge pier.
The current common damping methods are: (1) adopting a shear-resistant multilayer high-damping rubber support; (2) adopting a lead core anti-seismic energy-consumption support; (3) and a limit stop is adopted. Although the method has a certain shock absorption function, the shear-resistant multilayer high-damping rubber support is generally high in size, and rubber is easy to age to reduce the shock absorption performance; the lead core anti-seismic energy-consumption support can cause pollution to the environment; the main effect of limit stop is the roof beam that falls when preventing the earthquake, but can take place serious collision, damage the pier.
Disclosure of Invention
The invention provides an annular rubber multidimensional damping support for bridge damping, which comprises an anti-seismic pin, an annular steel partition plate, a foamed aluminum damping layer and a high-damping rubber annular rubber body. Under the condition of forming a bridge, a small gap is reserved between the anti-seismic pin and the foamed aluminum, temperature change causes the main beam to stretch, the main beam moves relative to the bridge pier, the anti-seismic pin can extrude the foamed aluminum shock-absorbing layer around the anti-seismic pin, the foamed aluminum shock-absorbing layer diffuses stress outwards after deformation, the extrusion stress reaches a high-damping rubber area to cause deformation of a rubber body, and the extrusion force of the anti-seismic pin caused by temperature deformation is small due to the fact that the elastic modulus of the rubber and the elastic modulus of the foamed aluminum are small, and the bridge pier and the support cannot be damaged. When an earthquake occurs, the main beam generates large movement relative to the bridge pier in a short time, the anti-seismic pin can rapidly extrude the foamed aluminum shock-absorbing layer, foamed aluminum has a strong energy-consuming and vibration-absorbing effect, when the extrusion stress of the anti-seismic pin on the foamed aluminum shock-absorbing layer is outwards transmitted to the annular rubber area, the stress is weakened, the high-damping rubber body continuously consumes the residual kinetic energy of the structure and releases the extrusion stress, so that the impact of the earthquake on the main beam is buffered, and the bridge pier and the support are protected from being damaged more greatly. The invention has the advantages that the foamed aluminum and the annular high-damping rubber body have good elasticity and energy consumption characteristics, only generate small thrust to a pier when the temperature changes, have excellent vibration damping characteristics when an earthquake occurs, and particularly have good vibration damping effect on the earthquake in any direction.
The technical scheme of the invention is as follows:
an annular rubber multidimensional damping support is characterized in that on the basis of a basic component of a conventional bridge support consisting of an upper bearing plate 1, a polytetrafluoroethylene plate 2 and a lower bearing plate 3, an anti-seismic pin 4, a foamed aluminum damping layer 5, an annular steel partition plate 6 and a high-damping annular rubber body 7 are additionally arranged; the anti-seismic pin 4 is positioned below the basic component and fixedly connected with the lower bearing plate 3; the anti-seismic pin 4 is of a solid cylindrical steel structure, and an annular steel partition plate 6 and a foamed aluminum shock absorption layer 5 are arranged on the periphery of the anti-seismic pin; a plurality of layers of high-damping annular rubber bodies 7 are arranged outside the foamed aluminum shock absorption layer 5 and are separated by annular steel partition plates 6 in a layered mode; the annular steel clapboard 6 has certain restraining and protecting functions on the foamed aluminum shock absorption layer 5 and the high-damping annular rubber body 7. The energy dissipation and shock absorption functions of the foamed aluminum shock absorption layer 5 are utilized, and the high-damping annular rubber body 7 has energy dissipation and shock absorption performance and strong deformability, so that a composite structure is formed, and the advantages of two materials are fully exerted. Under the condition of forming a bridge, a small gap is reserved between the anti-seismic pin 4 and the foamed aluminum shock-absorbing layer 5, the temperature change causes the main beam to stretch, the main beam moves relative to a pier, the anti-seismic pin 4 can extrude the annular steel partition plate 6 and the foamed aluminum shock-absorbing layer 5 around the annular steel partition plate, the foamed aluminum shock-absorbing layer 5 diffuses stress outwards after deformation, the extrusion stress reaches the high-damping annular rubber body area 7 to cause the deformation of the rubber body, and the elastic modulus of the rubber and the foamed aluminum is small, so that the extrusion force of the anti-seismic pin 4 caused by temperature deformation is small, and the pier and the support cannot be damaged. When an earthquake occurs, the main beam generates larger movement relative to the bridge pier in a short time, the anti-seismic pin 4 can rapidly extrude the annular steel partition plate 6 and the foamed aluminum shock absorption layer 5, foamed aluminum has a strong energy dissipation and vibration reduction effect, when the extrusion stress of the anti-seismic pin 4 to the foamed aluminum shock absorption layer 5 is outwards transmitted to the area of the high-damping annular rubber body 7, the stress is weakened, and the high-damping annular rubber body 7 continuously consumes the residual kinetic energy of the structure and releases the extrusion stress to buffer the impact of the earthquake on the main beam and the bridge pier, so that the bridge pier and the support are protected from being damaged more greatly. When the main beam vertically vibrates due to an earthquake, the foamed aluminum shock absorption layer 5 and the high-damping annular rubber body 7 have good shock absorption and shock isolation functions, so that the vertical vibration of the main beam is reduced.
The invention has the advantages that: the foamed aluminum has excellent energy consumption and vibration reduction performance, the high-damping annular rubber body has the energy consumption and vibration reduction performance and stronger deformability, a composite structure is formed, and the advantages of two materials are fully exerted. The energy-saving vibration-damping device only generates small thrust to a pier when the temperature changes, has excellent energy-consuming vibration-damping characteristics when an earthquake occurs, and particularly has good vibration-damping effect on the earthquake in any direction.
Drawings
FIG. 1 is a schematic view of an annular rubber multi-dimensional damping mount.
Fig. 2 is a schematic plan view of the principle of the support.
In the figure: 1, an upper bearing plate; 2, a polytetrafluoroethylene plate; 3, a lower bearing plate; 4, anti-knock pins; 5, a foamed aluminum shock absorption layer; 6, an annular steel clapboard; 7 high damping ring rubber body.
Detailed Description
The following detailed description of the invention refers to the accompanying drawings.
Examples
The span of a bridge in a multi-span curve continuous beam bridge is 3 × 40 meters, the radius of a curve is 100 meters, the width of the curve is 23 meters, a main beam is a concrete box girder, the bridge has 4 rows of piers, 8 supports are installed, one support on the second row of piers is a bidirectional fixed support, the other support is a damping support, and the rest piers are all provided with the damping support of the invention.
Claims (1)
1. The annular rubber multi-dimensional damping support is characterized in that an anti-seismic pin (4), a foamed aluminum damping layer (5), an annular steel partition plate (6) and a high-damping annular rubber body (7) are additionally arranged on the basis of a basic component of a conventional bridge support consisting of an upper bearing plate (1), a polytetrafluoroethylene plate (2) and a lower bearing plate (3); the anti-seismic pin (4) is positioned below the basic component and fixedly connected with the lower bearing plate (3); the anti-seismic pin (4) is of a solid cylindrical steel structure, and an annular steel partition plate (6) and a foamed aluminum shock absorption layer (5) are arranged on the periphery of the anti-seismic pin; a plurality of layers of high-damping annular rubber bodies 7 are arranged outside the foamed aluminum shock absorption layer (5) and are separated by annular steel partition plates (6) in a layered mode; the annular steel clapboard (6) has certain restraining and protecting functions on the foamed aluminum shock absorption layer (5) and the high-damping annular rubber body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910004088.7A CN111395157A (en) | 2019-01-03 | 2019-01-03 | Annular rubber multi-dimensional damping support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910004088.7A CN111395157A (en) | 2019-01-03 | 2019-01-03 | Annular rubber multi-dimensional damping support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111395157A true CN111395157A (en) | 2020-07-10 |
Family
ID=71426972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910004088.7A Pending CN111395157A (en) | 2019-01-03 | 2019-01-03 | Annular rubber multi-dimensional damping support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111395157A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116693949A (en) * | 2023-08-01 | 2023-09-05 | 中裕铁信交通科技股份有限公司 | Rubber material, preparation method thereof and shock-absorbing and isolating rubber support structure |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010004815A (en) * | 1999-06-29 | 2001-01-15 | 신형인 | The building method of bridge excluding earthquake effect by means of utilizing laminated rubber bearing and port supporter |
| JP2001131914A (en) * | 1999-11-02 | 2001-05-15 | Bridgestone Corp | Seismic control supporting structure of bridge girder |
| CN201381476Y (en) * | 2009-04-17 | 2010-01-13 | 衡水中铁建工程橡胶有限责任公司 | Shock-resistant spherical rotating supporting base |
| CN201610518U (en) * | 2010-02-03 | 2010-10-20 | 上海英谷桥梁科技有限公司 | Friction type high-damping rubber bridge damping support |
| CN101962934A (en) * | 2010-09-28 | 2011-02-02 | 成都市新筑路桥机械股份有限公司 | One-way movable damper for bridge |
| CN104372758A (en) * | 2014-11-24 | 2015-02-25 | 南京工业大学 | Light high-efficiency composite buffering collision-reducing device |
| CN106677368A (en) * | 2017-03-01 | 2017-05-17 | 北京建筑大学 | Anti-drawing rubber shock-insulating supporting seat with foamed aluminum core |
| CN106758791A (en) * | 2016-12-14 | 2017-05-31 | 石家庄铁道大学 | Spacing energy-dissipating type vibration absorption and isolation support of bridge and preparation method thereof |
| CN107313375A (en) * | 2017-07-31 | 2017-11-03 | 佛山科学技术学院 | A kind of separate type pier anticollision system |
| CN209923758U (en) * | 2019-01-03 | 2020-01-10 | 大连理工大学 | Annular rubber multi-dimensional damping support |
-
2019
- 2019-01-03 CN CN201910004088.7A patent/CN111395157A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010004815A (en) * | 1999-06-29 | 2001-01-15 | 신형인 | The building method of bridge excluding earthquake effect by means of utilizing laminated rubber bearing and port supporter |
| JP2001131914A (en) * | 1999-11-02 | 2001-05-15 | Bridgestone Corp | Seismic control supporting structure of bridge girder |
| CN201381476Y (en) * | 2009-04-17 | 2010-01-13 | 衡水中铁建工程橡胶有限责任公司 | Shock-resistant spherical rotating supporting base |
| CN201610518U (en) * | 2010-02-03 | 2010-10-20 | 上海英谷桥梁科技有限公司 | Friction type high-damping rubber bridge damping support |
| CN101962934A (en) * | 2010-09-28 | 2011-02-02 | 成都市新筑路桥机械股份有限公司 | One-way movable damper for bridge |
| CN104372758A (en) * | 2014-11-24 | 2015-02-25 | 南京工业大学 | Light high-efficiency composite buffering collision-reducing device |
| CN106758791A (en) * | 2016-12-14 | 2017-05-31 | 石家庄铁道大学 | Spacing energy-dissipating type vibration absorption and isolation support of bridge and preparation method thereof |
| CN106677368A (en) * | 2017-03-01 | 2017-05-17 | 北京建筑大学 | Anti-drawing rubber shock-insulating supporting seat with foamed aluminum core |
| CN107313375A (en) * | 2017-07-31 | 2017-11-03 | 佛山科学技术学院 | A kind of separate type pier anticollision system |
| CN209923758U (en) * | 2019-01-03 | 2020-01-10 | 大连理工大学 | Annular rubber multi-dimensional damping support |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116693949A (en) * | 2023-08-01 | 2023-09-05 | 中裕铁信交通科技股份有限公司 | Rubber material, preparation method thereof and shock-absorbing and isolating rubber support structure |
| CN116693949B (en) * | 2023-08-01 | 2023-10-27 | 中裕铁信交通科技股份有限公司 | Rubber material, preparation method thereof and shock-absorbing and isolating rubber support structure |
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