CN102061666A - Special earthquake isolation and damping support seat for railways and bridges - Google Patents
Special earthquake isolation and damping support seat for railways and bridges Download PDFInfo
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- CN102061666A CN102061666A CN 201010587204 CN201010587204A CN102061666A CN 102061666 A CN102061666 A CN 102061666A CN 201010587204 CN201010587204 CN 201010587204 CN 201010587204 A CN201010587204 A CN 201010587204A CN 102061666 A CN102061666 A CN 102061666A
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Abstract
The invention discloses a special earthquake isolation and damping support seat which is suitable for railways and bridges and comprises a lead core lamination rubber support seat and an X-shaped mild steel damper, wherein the X-shaped mild steel damper consists of more than three X-shaped mild steel damper single sheets which are sequentially parallel and is arranged at the left side and the right side of the lead core lamination rubber support seat, and the upper end and the lower end of both sides of the X-shaped mild steel damper are respectively fixed on an upper connecting plate and a lower connecting plate of the lead core lamination rubber support seat with high-strength bolts. The special earthquake isolation and damping support seat disclosed by the invention can increase the initial rigidity, enhance the yield strength, efficiently limit displacement of the bridge during small earthquake and middle earthquake, ensure the safety of train running and fulfill the function of better earthquake isolation and damping during large earthquake.
Description
Technical field
The present invention relates to a kind of combined isolation bearing, particularly relate to a kind of special-purpose earthquake isolation bearing that is applicable to railway, bridge.
Background technology
Destruction of bridge will cause interruption of communication in the earthquake, this not only can influence people's normal life and economical operation, cause serious economy loss, and will seriously influence disaster relief work after the shake, personnel can not be evacuated safely smoothly, and hinder and promptly carry rescue personnel and disaster relief supplies, thereby aggravation earthquake disaster to the disaster area.Therefore, in the bridge earthquake resistance research field, seeking more effective antidetonation means, to resist earthquake be the major subjects of bridge earthquake resistance research to structural damage.Since modern, seismic isolation technology are introduced in the bridge earthquake resistance engineering, have obtained effect preferably.The neoprene bearing seismic isolation technology is as a kind of technology the most ripe in the isolation structure, obtained a large amount of application in some actual engineerings of the U.S., Japan, in the application of China also more and more widely.Lead core rubber support is a shock insulation member the most frequently used in the earthquake isolation engineering, be mainly used in structure and the highway bridge, can play the effect that structural seismic energy is passed in isolation earthquake and consumption, effectively reduce the acceleration responsive of structure under the geological process, but lead core rubber support seldom is applied in the railroad bridge always, mainly due to comparing with highway bridge, railroad bridge is the rail circuit, and its vehicle structure, classification type and running velocity all are very different.Especially constantly carry out the contemporary China of speed raising at train, train requires strict more to the ride comfort of track, the lead-rubber shock isolating pedestal that obtains by traditional isolation design method, because the yield load of bearing is less, shock isolating pedestal enters the surrender stage when little shake and middle shake, surrender back development of deformation is very fast, will cause track deformation, can't guarantee the safety that vehicle moves on bridge when small earthquakes takes place.
Summary of the invention
The object of the present invention is to provide a kind of initial stiffness that can increase shock isolating pedestal, improve the yield strength of bearing, effectively restriction bridge displacement guarantees the safety of train operation when satisfying little shake and middle shake, plays the special-purpose earthquake isolation bearing of railroad bridge of earthquake isolation effect preferably when shaking greatly.
Purpose of the present invention is achieved by the following technical programs:
The special-purpose earthquake isolation bearing of a kind of railroad bridge, it is characterized in that: it comprises lead rubber bearing and X type mild steel damper, described X type mild steel damper is positioned at the left and right sides of lead rubber bearing, and the upper and lower side of X type mild steel damper both sides is fixed on the joint cover up and down of lead rubber bearing with high-strength bolt respectively.After big shake, be convenient to change mild steel damper.
Described steel damper is made up of three above X type mild steel damper monolithics, described each X type mild steel damper monolithic is arranged side by side successively, the two ends up and down of described X type mild steel damper are cascaded each X type mild steel damper monolithic by rigidity bigger angle steel and high-strength bolt, on the joint cover up and down that the upper and lower side of X type mild steel damper both sides is fixed on lead rubber bearing by bigger angle steel of rigidity and high-strength bolt respectively.
Have a negative impact for avoiding interacting between the X type mild steel damper monolithic, the billet of 8mm ~ 12mm thickness is installed between two fixed ends up and down of adjacent X type mild steel damper monolithic;
For avoiding producing slippage between the X type mild steel damper monolithic, high-strength bolt is applied pretightning force, for X type mild steel damper monolithic, its up and down two anchor portion can think by build-in fully.
The special-purpose earthquake isolation bearing of railroad bridge of the present invention has the following advantages: (1) provides bigger initial stiffness and yield strength by X type mild steel damper, under the train load effect, under little shake and the middle shake effect, mild steel damper is in stretch section, effectively the displacement of restriction bridge superstructure guarantees the safety of train operation.(2) mild steel damper rate when big shake is introduced into the surrender stage; the lead for retractable pencil of lead core rubber support is surrendered subsequently; thereby lead core rubber support and mild steel damper co-operation; play the function of shock insulation while preferably; can effectively reduce the displacement of bridge superstructure under the big shake effect, the protection bridge does not destroy.
Description of drawings
Fig. 1 is the elevation of railroad bridge combined isolation bearing of the present invention;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the A-A sectional drawing of Fig. 1;
Fig. 4 is the B-B sectional drawing of Fig. 2;
Fig. 5 is the power and the deformation pattern of the special-purpose earthquake isolation bearing of railroad bridge of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Shown in Fig. 1 ~ 4, it comprises lead rubber bearing 1 and X type mild steel damper 2 the special-purpose earthquake isolation bearing of the railroad bridge of present embodiment, described X type mild steel damper 2 is positioned at the left and right sides of lead rubber bearing 1, described X type mild steel damper 2 is made up of three above X type mild steel damper monolithics 3, described each X type mild steel damper monolithic 3 is arranged side by side successively, the two ends up and down of described X type mild steel damper 2 are cascaded each X type mild steel damper monolithic 3 by rigidity bigger angle steel 4 and high-strength bolt 5, on the joint cover up and down 6 that the upper and lower side of X type mild steel damper 2 both sides is fixed on lead rubber bearing 1 by bigger angle steel 4 of rigidity and high-strength bolt 5 respectively; Have a negative impact for avoiding interacting between the X type mild steel damper monolithic 3, the billet 7 of 8mm ~ 12mm thickness is installed between two fixed ends up and down of adjacent X type mild steel damper monolithic 3, preferred thickness is the billet of 10mm; For avoiding producing slippage between the X type mild steel damper monolithic 3, high-strength bolt 5 is applied pretightning force, for X type mild steel damper monolithic 3, its up and down two anchor portion can think by build-in fully.
As shown in Figure 5, the special-purpose earthquake isolation bearing of railroad bridge of the present invention, move to A point back steel plate stop by the O point and begin to enter the surrender stage, lead core rubber support still is in elastic stage, begin to enter the surrender stage by the B point to C point lead core rubber support, the CD section is the unloading path of combined isolator, and the elastic stiffness along combined isolator during unloading unloads.
The present invention is not limited to above embodiment, so long as the scheme of putting down in writing in this specification and claims book all can be implemented.
Claims (4)
1. the special-purpose earthquake isolation bearing of a railroad bridge, it is characterized in that: it comprises lead rubber bearing and X type mild steel damper, described X type mild steel damper is positioned at the left and right sides of lead rubber bearing, and the upper and lower side of X type mild steel damper both sides is fixed on the joint cover up and down of lead rubber bearing with high-strength bolt respectively.
2. the special-purpose earthquake isolation bearing of railroad bridge according to claim 1, it is characterized in that: described steel damper is made up of three above X type mild steel damper monolithics, described each X type mild steel damper monolithic is arranged side by side successively, the two ends up and down of described X type mild steel damper are cascaded each X type mild steel damper monolithic by rigidity bigger angle steel and high-strength bolt, on the joint cover up and down that the upper and lower side of X type mild steel damper both sides is fixed on lead rubber bearing by bigger angle steel of rigidity and high-strength bolt respectively.
3. the special-purpose earthquake isolation bearing of railroad bridge according to claim 2 is characterized in that: the billet that 8mm ~ 12mm thickness is installed between two fixed ends up and down of adjacent X type mild steel damper monolithic.
4. according to claim 2 or the special-purpose earthquake isolation bearing of 3 described railroad bridges, it is characterized in that: high-strength bolt is applied pretightning force, and for X type mild steel damper monolithic, two anchor portion are by build-in about it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010587204 CN102061666A (en) | 2010-12-14 | 2010-12-14 | Special earthquake isolation and damping support seat for railways and bridges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010587204 CN102061666A (en) | 2010-12-14 | 2010-12-14 | Special earthquake isolation and damping support seat for railways and bridges |
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| Publication Number | Publication Date |
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| CN102061666A true CN102061666A (en) | 2011-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201010587204 Pending CN102061666A (en) | 2010-12-14 | 2010-12-14 | Special earthquake isolation and damping support seat for railways and bridges |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286946A (en) * | 2011-09-06 | 2011-12-21 | 同济大学 | Constant strength elastic-plastic shock absorption stop block |
| CN102839750A (en) * | 2012-09-11 | 2012-12-26 | 北京工业大学 | Soft steel-rolling seismic isolation bearing |
| CN103276666A (en) * | 2013-06-13 | 2013-09-04 | 北京国道通公路设计研究院股份有限公司 | Soft steel damping support |
| CN103850174A (en) * | 2014-02-17 | 2014-06-11 | 中交公路规划设计院有限公司 | Three-tower suspension bridge with seism-isolating foundations |
| CN104790292A (en) * | 2015-05-06 | 2015-07-22 | 西南交通大学 | High-damping rubber ring limiting one-way movable pot type rubber bearing |
| CN104846736A (en) * | 2015-05-06 | 2015-08-19 | 西南交通大学 | Steel damping limiting unidirectional moving pot type rubber support seat |
| CN105464237A (en) * | 2015-12-16 | 2016-04-06 | 上海大学 | Nested type shear locking apparatus on rubber shock insulation support |
| CN105887668A (en) * | 2016-05-31 | 2016-08-24 | 山东省交通规划设计院 | Bridge shock reduction and isolation supporting base and cable-stayed bridge and suspension bridge supporting structure |
| CN106087723A (en) * | 2016-08-10 | 2016-11-09 | 山东省交通规划设计院 | Flabellum shape steel damper and vibration absorption and isolation support |
| CN106320559A (en) * | 2016-10-27 | 2017-01-11 | 沈阳建筑大学 | Spacing power consumption of improvement type subtracts isolation bearing |
| CN106436955A (en) * | 2016-11-30 | 2017-02-22 | 中国地震局工程力学研究所 | Modular high-performance soft steel lead-core rubber energy dissipater |
| CN107060128A (en) * | 2017-06-07 | 2017-08-18 | 山西大学 | A kind of shock insulation limit protection device |
| CN107701647A (en) * | 2017-11-07 | 2018-02-16 | 陈楚贵 | A kind of automobile shock pedestal |
| CN110644641A (en) * | 2019-10-09 | 2020-01-03 | 广州大学 | Combined shock insulation rubber support with super large deformation capacity |
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| US4713917A (en) * | 1984-05-11 | 1987-12-22 | Dfc New Zealand Limited | Frictional energy absorbing device and/or methods of absorbing energy |
| CN2763375Y (en) * | 2004-12-30 | 2006-03-08 | 北京工业大学 | Composite lead energy dissipation device with built-in steel board |
| CN2763376Y (en) * | 2004-12-30 | 2006-03-08 | 北京工业大学 | Energy dissipation device of lead grouted steel pipe bundle |
| CN101748685A (en) * | 2008-12-05 | 2010-06-23 | 同济大学 | Slippage cylindrical soft steel damping device and application thereof on bridge girder |
-
2010
- 2010-12-14 CN CN 201010587204 patent/CN102061666A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713917A (en) * | 1984-05-11 | 1987-12-22 | Dfc New Zealand Limited | Frictional energy absorbing device and/or methods of absorbing energy |
| CN2763375Y (en) * | 2004-12-30 | 2006-03-08 | 北京工业大学 | Composite lead energy dissipation device with built-in steel board |
| CN2763376Y (en) * | 2004-12-30 | 2006-03-08 | 北京工业大学 | Energy dissipation device of lead grouted steel pipe bundle |
| CN101748685A (en) * | 2008-12-05 | 2010-06-23 | 同济大学 | Slippage cylindrical soft steel damping device and application thereof on bridge girder |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286946A (en) * | 2011-09-06 | 2011-12-21 | 同济大学 | Constant strength elastic-plastic shock absorption stop block |
| CN102839750A (en) * | 2012-09-11 | 2012-12-26 | 北京工业大学 | Soft steel-rolling seismic isolation bearing |
| CN103276666A (en) * | 2013-06-13 | 2013-09-04 | 北京国道通公路设计研究院股份有限公司 | Soft steel damping support |
| CN103850174A (en) * | 2014-02-17 | 2014-06-11 | 中交公路规划设计院有限公司 | Three-tower suspension bridge with seism-isolating foundations |
| CN103850174B (en) * | 2014-02-17 | 2015-10-14 | 中交公路规划设计院有限公司 | A kind of three-tower suspension bridge that shock insulating foundation is set |
| CN104790292A (en) * | 2015-05-06 | 2015-07-22 | 西南交通大学 | High-damping rubber ring limiting one-way movable pot type rubber bearing |
| CN104846736A (en) * | 2015-05-06 | 2015-08-19 | 西南交通大学 | Steel damping limiting unidirectional moving pot type rubber support seat |
| CN105464237A (en) * | 2015-12-16 | 2016-04-06 | 上海大学 | Nested type shear locking apparatus on rubber shock insulation support |
| CN105887668A (en) * | 2016-05-31 | 2016-08-24 | 山东省交通规划设计院 | Bridge shock reduction and isolation supporting base and cable-stayed bridge and suspension bridge supporting structure |
| CN105887668B (en) * | 2016-05-31 | 2018-08-17 | 山东省交通规划设计院 | Bridge vibration absorption and isolation support and cable-stayed bridge, suspension bridge support construction |
| CN106087723A (en) * | 2016-08-10 | 2016-11-09 | 山东省交通规划设计院 | Flabellum shape steel damper and vibration absorption and isolation support |
| CN106320559A (en) * | 2016-10-27 | 2017-01-11 | 沈阳建筑大学 | Spacing power consumption of improvement type subtracts isolation bearing |
| CN106436955A (en) * | 2016-11-30 | 2017-02-22 | 中国地震局工程力学研究所 | Modular high-performance soft steel lead-core rubber energy dissipater |
| CN107060128A (en) * | 2017-06-07 | 2017-08-18 | 山西大学 | A kind of shock insulation limit protection device |
| CN107701647A (en) * | 2017-11-07 | 2018-02-16 | 陈楚贵 | A kind of automobile shock pedestal |
| CN110644641A (en) * | 2019-10-09 | 2020-01-03 | 广州大学 | Combined shock insulation rubber support with super large deformation capacity |
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| PB01 | Publication | ||
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Application publication date: 20110518 |