CN107881906B - Bridge anti-seismic steel support - Google Patents
Bridge anti-seismic steel support Download PDFInfo
- Publication number
- CN107881906B CN107881906B CN201711337280.5A CN201711337280A CN107881906B CN 107881906 B CN107881906 B CN 107881906B CN 201711337280 A CN201711337280 A CN 201711337280A CN 107881906 B CN107881906 B CN 107881906B
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- CN
- China
- Prior art keywords
- steel plate
- cylindrical lead
- lead core
- plate
- upper steel
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Classifications
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- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention discloses a bridge anti-seismic steel support, which comprises a lower steel plate and an intermediate steel plate which are mutually connected into a whole; an annular groove is formed in the middle steel plate, and elastic sheets are adhered to two side walls of the groove; a plurality of cylindrical lead cores are arranged in the grooves; the upper steel plate is positioned above the middle steel plate and is fixedly connected with the top of the cylindrical lead core; a sliding layer is arranged between the upper steel plate and the middle steel plate and comprises a stainless steel plate and a planar polytetrafluoroethylene plate. The lower steel plate, the middle steel plate and the upper steel plate are all made of steel materials, and the sliding layer formed by the stainless steel plate and the planar polytetrafluoroethylene plate has smaller friction force. The invention has the advantages of higher vertical bearing capacity, uniform damping distribution, simple and convenient manufacturing process, and bidirectional shock resistance, and when an earthquake occurs, the cylindrical lead core can rapidly react and yield and deform after being stressed, thereby effectively relieving the impact of the earthquake on the main beam and avoiding beam falling disasters.
Description
Technical Field
The invention relates to the field of bridge supports, in particular to a bridge anti-seismic steel support.
Background
The seismic isolation and reduction technology is a simple, convenient, economical and effective engineering seismic technology in bridge engineering, the structural period is prolonged by arranging the seismic isolation and reduction device, damping is increased to reduce the energy transferred to the main structure by the earthquake, and the damage of the main structure is avoided.
The vibration reduction and insulation devices commonly used in bridge engineering at present are vibration reduction and insulation supports, and most of the vibration reduction and insulation supports are natural rubber supports, lead rubber supports and friction pendulum supports. The natural rubber support and the lead rubber support have the problems of unreliable force transmission, poor stability, uneven damping distribution and the like because rubber is adopted as a main bearing material; and the special sliding surface of the friction pendulum support sets high requirements for the manufacturing process. These problems limit the application range of the existing support, and there is an urgent need for a novel bridge anti-seismic support which has higher bearing capacity, uniform damping distribution and simple and convenient manufacture.
Disclosure of Invention
The invention provides a bridge anti-seismic steel support, which has the characteristics of higher vertical bearing capacity, uniform damping distribution, simple and convenient manufacturing process and bidirectional anti-seismic property, and can effectively relieve the impact of earthquakes on a girder.
In order to solve the technical problems, the invention adopts the following technical scheme:
a bridge anti-seismic steel support comprises a lower steel plate and an intermediate steel plate which are connected into a whole; an annular groove is formed in the middle steel plate, and elastic sheets are adhered to two side walls of the groove; a plurality of cylindrical lead cores are arranged in the grooves; the upper steel plate is positioned above the middle steel plate and is fixedly connected with the top of the cylindrical lead core; a sliding layer is arranged between the upper steel plate and the middle steel plate and comprises stainless steel plates and planar polytetrafluoroethylene plates which are stacked up and down.
According to the scheme, the outer surface of the middle steel plate is fixedly connected with an annular steel baffle; the edge of the upper steel plate protrudes downwards to form a limiting frame, the bottom of the limiting frame is in contact with the steel baffle plate, and a rubber ring is arranged between the limiting frame and the middle steel plate.
According to the scheme, the outer surface of the cylindrical lead core is wrapped with the rubber protection layer.
Compared with the prior art, the invention has the beneficial effects that: the upper steel plate connected with the main beam slides through the sliding layer under the action of the earthquake, so that the cylindrical lead core is deformed in yield after being stressed, the horizontal acting force of the earthquake on the main beam is effectively relieved, and the beam falling disaster is avoided. The elastic sheet can enable the deformed cylindrical lead core to recover and deform, and the rubber ring can further ensure the recovery and deformation of the cylindrical lead core, so that the invention has reusability. The lower steel plate, the middle steel plate and the upper steel plate are all made of steel materials, have higher vertical bearing capacity, and can bear a beam body with larger mass; the invention can be provided with a cylindrical lead core longitudinally and transversely, so that the invention has the characteristic of bidirectional shock resistance.
Drawings
FIG. 1 is a schematic view of the present invention partially in section;
FIG. 2 is a schematic view of the structure of the present invention in a forward cut;
FIG. 3 is a schematic top view of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings, in which reference numerals are used to illustrate the invention by way of illustration: 1-upper steel plate, 2-rubber protective layer, 3-cylinder lead core, 4-stainless steel plate, 5-plane polytetrafluoroethylene plate, 6-steel baffle, 7-middle steel plate, 8-lower steel plate, 9-elastic sheet, 10-rubber ring and 11-groove.
The present invention includes a lower steel plate 8 and an intermediate steel plate 7 welded to each other as a single body.
An annular groove 11 is arranged in the middle steel plate 7 near the edge, and elastic sheets 9 are adhered to two side walls of the groove 11. The groove 11 is also internally provided with a cylindrical lead core 3, and the outer surface of the cylindrical lead core 3 is wrapped with a rubber protection layer 2.
The upper steel plate 1 is positioned above the middle steel plate 7, and the upper steel plate 1 is connected with the top of the cylindrical lead core 3 to form a whole.
A sliding layer is arranged between the upper steel plate 1 and the middle steel plate 7, and comprises a stainless steel plate 4 and a planar polytetrafluoroethylene plate 5.
An annular steel baffle 6 is welded on the outer surface of the middle steel plate 7. The edge of the upper steel plate 1 protrudes downwards to form a limit frame, the bottom of the limit frame is contacted with the steel baffle 6, and a rubber ring 10 is arranged between the limit frame and the middle steel plate 7.
The lower steel plate 8 is fixed to the pier, and the upper steel plate 1 is fixedly connected with the girder. When seismic waves come out, the sliding layer between the upper steel plate 1 and the middle steel plate 7 slides, the stainless steel plate 4 and the planar polytetrafluoroethylene plate 5 slide relatively, and the cylindrical lead core 3 generates hysteresis-damped plastic deformation and absorbs seismic energy. After the earthquake is finished, the cylindrical lead core 3 is restored to the original position by the horizontal restoring force provided by the elastic sheet 9. The rubber ring 10 provides further horizontal restoring force to the cylindrical lead core 3, and meanwhile, the rubber ring 10 can also avoid the direct impact between the middle steel plate 7 and the limiting frame of the upper steel plate 1, so that the reliability of the whole support is improved.
The rubber protective layer 2 can prevent the cylindrical lead core 3 from directly colliding with the side wall of the groove 11, and prevent the cylindrical lead core 3 from directly colliding with the rigid middle steel plate 7 to damage the cylindrical lead core 3 and influence the shock absorption performance; on the other hand, the rubber protective layer 2 can also play a role in buffering plastic deformation of the cylindrical lead core 3, and the cylindrical lead core 3 is prevented from being deformed too severely to be damaged.
The specific number of cylindrical lead cores 3 in the grooves 11 can be set according to the highest earthquake level of the local calendar year, and the larger the number of cylindrical lead cores 3 is, the stronger the earthquake resistance is. Accordingly, the thickness of the rubber ring 10 may be set to be different depending on the level of the earthquake, and the thicker the rubber ring 10, the stronger the cushioning and restoring ability.
The lower steel plate 8, the middle steel plate 7 and the upper steel plate 1 are all made of steel materials, have higher vertical bearing capacity, and can bear a beam body with larger mass. The sliding layer formed by the stainless steel plate 4 and the planar polytetrafluoroethylene plate 5 has small friction force, so that when an earthquake occurs, the cylindrical lead core 3 can rapidly react, and after being stressed, the cylindrical lead core is deformed in a yielding way, thereby effectively relieving the impact of the earthquake on a main beam and avoiding beam falling disasters.
Claims (1)
1. The utility model provides a bridge antidetonation steel support which characterized in that: comprises a lower steel plate (8) and an intermediate steel plate (7) which are connected into a whole; an annular groove is formed in the middle steel plate (7), and elastic sheets (9) are adhered to two side walls of the groove; a plurality of cylindrical lead cores (3) are arranged in the grooves; the upper steel plate (1) is positioned above the middle steel plate (7), and the upper steel plate (1) is fixedly connected with the top of the cylindrical lead core (3); a sliding layer is arranged between the upper steel plate (1) and the middle steel plate (7), and comprises stainless steel plates (4) and plane polytetrafluoroethylene plates (5) which are stacked up and down; the outer surface of the middle steel plate (7) is fixedly connected with an annular steel baffle (6); the edge of the upper steel plate (1) protrudes downwards to form a limit frame, the bottom of the limit frame is contacted with the steel baffle (6), and a rubber ring (10) is arranged between the limit frame and the middle steel plate (7); the outer surface of the cylindrical lead core (3) is wrapped with a rubber protection layer (2); the lower steel plate (8) is fixed on the bridge pier, and the upper steel plate (1) is fixedly connected with the girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711337280.5A CN107881906B (en) | 2017-12-14 | 2017-12-14 | Bridge anti-seismic steel support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711337280.5A CN107881906B (en) | 2017-12-14 | 2017-12-14 | Bridge anti-seismic steel support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107881906A CN107881906A (en) | 2018-04-06 |
| CN107881906B true CN107881906B (en) | 2023-07-18 |
Family
ID=61774389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711337280.5A Active CN107881906B (en) | 2017-12-14 | 2017-12-14 | Bridge anti-seismic steel support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107881906B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024252B (en) * | 2018-06-28 | 2021-04-06 | 台州中知英健机械自动化有限公司 | Bridge anti-seismic support |
| CN109024253A (en) * | 2018-06-28 | 2018-12-18 | 广西驰胜农业科技有限公司 | A kind of bridge girder anti-seismic bearing |
| CN109972503B (en) * | 2019-05-17 | 2024-04-09 | 柳州东方工程橡胶制品有限公司 | Energy-saving convenient shock insulation support |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694111A (en) * | 2009-09-30 | 2010-04-14 | 无锡圣丰建筑新材料有限公司 | Lead core cladding vibration isolating rubber bearing |
| CN101761029A (en) * | 2009-12-11 | 2010-06-30 | 招商局重庆交通科研设计院有限公司 | Sliding lead-core shock absorption and insulation rubber support for bridge |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2272458Y (en) * | 1996-10-15 | 1998-01-14 | 铁道部科学研究院铁道建筑研究所 | Lead core rubber support |
| JP2000280249A (en) * | 1999-03-30 | 2000-10-10 | Tokai Rubber Ind Ltd | Rubber support and production thereof |
| JP4524862B2 (en) * | 2000-06-01 | 2010-08-18 | オイレス工業株式会社 | Manufacturing method of laminated rubber bearing body with lead strut and structure supported by seismic isolation with laminated rubber bearing body with lead strut manufactured by this manufacturing method |
| KR100574405B1 (en) * | 2003-04-14 | 2006-04-27 | 협성실업 주식회사 | Apparatus for preventing from lead rubber bearing distortion |
| CN201574488U (en) * | 2009-09-30 | 2010-09-08 | 无锡圣丰建筑新材料有限公司 | Lead-coated shock absorbing rubber support |
| KR20130043855A (en) * | 2011-10-21 | 2013-05-02 | 김재욱 | Lead rubber bearing for controlling stability of bridge |
| CN104120651A (en) * | 2014-08-06 | 2014-10-29 | 南京工业大学 | Unidirectional lead core rubber vibration insulation support |
| CN204199168U (en) * | 2014-09-26 | 2015-03-11 | 柳州东方工程橡胶制品有限公司 | Lead for retractable pencil damper |
| CN107217586B (en) * | 2016-03-21 | 2019-02-15 | 株洲时代新材料科技股份有限公司 | Lead for retractable pencil damps pot rubber bearing and its damping method |
| CN205474810U (en) * | 2016-03-24 | 2016-08-17 | 济南大学 | Increase formula shock attenuation pot rubber bearing |
| CN105649210A (en) * | 2016-04-09 | 2016-06-08 | 中国地震局工程力学研究所 | Porous lead rubber bearing with high damping capacity and large bearing capacity |
| CN107268426B (en) * | 2017-05-26 | 2018-12-04 | 同济大学 | Adaptive damping properties of lead-core rubber damper |
| CN107237254B (en) * | 2017-08-14 | 2018-06-19 | 四川大学 | A kind of high pier bridge vibration absorption and isolation support of chute-type friction pendulum |
| CN207760717U (en) * | 2017-12-14 | 2018-08-24 | 西南交通大学 | A kind of bridge earthquake resistance bridle iron |
-
2017
- 2017-12-14 CN CN201711337280.5A patent/CN107881906B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694111A (en) * | 2009-09-30 | 2010-04-14 | 无锡圣丰建筑新材料有限公司 | Lead core cladding vibration isolating rubber bearing |
| CN101761029A (en) * | 2009-12-11 | 2010-06-30 | 招商局重庆交通科研设计院有限公司 | Sliding lead-core shock absorption and insulation rubber support for bridge |
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| Publication number | Publication date |
|---|---|
| CN107881906A (en) | 2018-04-06 |
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