中小跨径板式橡胶支座梁桥新型隔震系统
|
摘要
为了解决中国采用板式橡胶支座中小跨径桥梁梁体移位震害严重的问题,在分析汶川地震中这类桥梁横桥向震害现象及破坏过程的基础上,总结板式橡胶支座摩擦试验及X形板弹塑性挡块拟静力试验成果,提出了中小跨径板式橡胶支座梁桥横桥向新型隔震系统。该隔震系统由板式橡胶支座和X形板弹塑性挡块组成,强震作用下通过板式橡胶支座滑动效应和X形板弹塑性挡块屈服减小地震能量输入,同时利用X形板弹塑性挡块传力可靠、滞回耗能能力稳定等特点,控制墩梁相对位移。选择一典型板式橡胶支座简支梁桥为研究原型,对采用新型隔震系统的简支梁桥抗震性能进行了振动台试验验证。结果表明:地震过程中新型隔震系统可大量耗散地震能量,有效控制墩梁相对位移,同时控制传递至下部结构的地震力,确保桥墩及基础免受严重损伤。
In order to overcome the deficiency of small and medium span girder bridges on laminated rubber bearings in China,in which serious girder displacement tends to take place during earthquake excitation,a new isolation system was presented based on the damage investigation and damage process analysis of the bridges during Wenchuan Earthquake and relevant experimental results.The new isolation system was composed of laminated rubber bearings and X-shaped steel hysteretic dampers.When suffering a large earthquake,the sliding between girder and bearing,and the yield of X-shaped steel hysteretic damper would reduce seismic energy input,while X-shaped steel hysteretic damper could also be used to control the displacement between the pier and girder based on its characteristics of reliable load-transmitting ability and stable hysteresis energy dissipation capacity.In order to evaluate the performance of the bridge with the new isolation system,a typical simple supported girder bridge on laminated rubber bearings was selected as the prototype and a shaking table test was conducted.The results show that the new isolation system can dissipate significant amount of earthquake energy,control the displacement between the pier and girder,and control the earthquake force transmitted tosubstructure,so as to protect piers and foundation from serious damage.
In order to overcome the deficiency of small and medium span girder bridges on laminated rubber bearings in China,in which serious girder displacement tends to take place during earthquake excitation,a new isolation system was presented based on the damage investigation and damage process analysis of the bridges during Wenchuan Earthquake and relevant experimental results.The new isolation system was composed of laminated rubber bearings and X-shaped steel hysteretic dampers.When suffering a large earthquake,the sliding between girder and bearing,and the yield of X-shaped steel hysteretic damper would reduce seismic energy input,while X-shaped steel hysteretic damper could also be used to control the displacement between the pier and girder based on its characteristics of reliable load-transmitting ability and stable hysteresis energy dissipation capacity.In order to evaluate the performance of the bridge with the new isolation system,a typical simple supported girder bridge on laminated rubber bearings was selected as the prototype and a shaking table test was conducted.The results show that the new isolation system can dissipate significant amount of earthquake energy,control the displacement between the pier and girder,and control the earthquake force transmitted tosubstructure,so as to protect piers and foundation from serious damage.
引文
[1]LI Jian-zhong,PENG Tian-bo,XU Yan.Damage Investigation of Girder Bridges Under the Wenchuan Earthquake and Corresponding Seismic Design Recommendations[J].Earthquake Engineering and Engineering Vibration,2008,7(4):337-344.
[2]汤虎,李建中.连续梁桥固定墩减震设计方法研究[J].土木工程学报,2011,44(12):64-72.TANG Hu,LI Jian-zhong.Study of Earthquake-reduction Design for the Fixed Pier of Continuous Bridge[J].China Civil Engineering Journal,2011,44(12):64-72.
[3]范立础,李建中.汶川桥梁震害分析与抗震设计对策[J].公路,2009(5):122-128.FAN Li-chu,LI Jian-zhong.Earthquake Induced Damage Analysis of Bridge in Wenchuan Earthquake and Designing Countermeasures[J].Highway,2009(5):122-128.
[4]庄卫林,刘振宇,蒋劲松.汶川大地震公路桥梁震害分析及对策[J].岩石力学与工程学报,2009,28(7):1377-1387.ZHUANG Wei-lin,LIU Zhen-yu,JIANG Jin-song.Earthquake-induced Damage Analysis of Highway Bridges in Wenchuan Earthquake and Countermeasures[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(7):1377-1387.
[5]王东升,王吉英,孙治国,等.汶川大地震简支梁桥落梁震害与设计对策[J].防灾减灾工程学报,2011,31(5):595-602.WANG Dong-sheng,WANG Ji-ying,SUN Zhi-guo,et al.Unseating Damage to Simply Supported Bridges During Wenchuan Earthquake and Design Countermeasures[J].Journal of Disaster Prevention and Mitigation Engineering,2011,31(5):595-602.
[6]范立础,聂利英,李建中.地震作用下板式橡胶支座滑动的动力性能分析[J].中国公路学报,2003,16(4):30-35.FAN Li-chu,NIE Li-ying,LI Jian-zhong.Dynamic Characteristic Analysis of Laminated Rubber Bearing Sliding Under Earthquake[J].China Journal of Highway and Transport,2003,16(4):30-35.
[7]汤虎,李建中.地震动特性对公路桥梁板式橡胶支座滑动反应影响[J].工程力学,2013,30(10):154-161,170.TANG Hu,LI Jian-zhong.Effect of Ground Motion Characteristics on Sliding Response of Elastomeric Pad Bearings in Highway Bridges[J].Engineering Mechanics,2013,30(10):154-161,170.
[8]AIKEN I D,NIMS D K,WHITTAKER A S,et al.Testing of Passive Energy Dissipation Systems[J].Earthquake Spectra,1993,9(3):335-370.
[9]XIA C,HANSON R D.Influence of ADAS Element Parameters on Building Seismic Response[J].Journal of Structural Engineering,1992,118(7):1903-1918.
[10]DARGUSH G F,SOONG T T.Behavior of Metallic Plate Dampers in Seismic Passive Energy Dissipation Systems[J].Earthquake Spectra,1995,11(4):545-568.
[11]WHITTAKER A S,BERTERO V V,THOMPSON C L,et al.Seismic Testing of Steel Plate Energy Dissipation Devices[J].Earthquake Spectra,1991,7(4):563-604.
[12]黄小国.连续梁桥防落梁装置试验和理论研究[D].上海:同济大学,2009.HUANG Xiao-guo.Experimental and Theoretical Research on Unseating-prevention Device for Continuous Bridges[D].Shanghai:Tongji University,2009.
[13]VASSEGHI A.Energy Dissipating Shear Key for Precast Concrete Girder Bridges[J].Scientia Iranica,2011,18(3):296-303.
[14]GSID-3:2010,Guide Specifications for Seismic Isolation Design[S].
[15]周颖,吕西林.建筑结构振动台模型试验方法与技术[M].北京:科学出版社,2012.ZHOU Ying,LU Xi-lin.Method and Technology for Shaking Table Model Test of Building Structures[M].Beijing:Science Press,2012.
[16]JTG/T B02-01—2008,公路桥梁抗震设计细则[S].JTG/T B02-01—2008,Guidelines for Seismic Design of Highway Bridges[S].
[17]傅志方,华宏星.模态分析理论与应用[M].上海:上海交通大学出版社,2000.FU Zhi-fang,HUA Hong-xing.Modal Analysis Theory and Application[M].Shanghai:Shanghai Jiao Tong University Press,2000.
[2]汤虎,李建中.连续梁桥固定墩减震设计方法研究[J].土木工程学报,2011,44(12):64-72.TANG Hu,LI Jian-zhong.Study of Earthquake-reduction Design for the Fixed Pier of Continuous Bridge[J].China Civil Engineering Journal,2011,44(12):64-72.
[3]范立础,李建中.汶川桥梁震害分析与抗震设计对策[J].公路,2009(5):122-128.FAN Li-chu,LI Jian-zhong.Earthquake Induced Damage Analysis of Bridge in Wenchuan Earthquake and Designing Countermeasures[J].Highway,2009(5):122-128.
[4]庄卫林,刘振宇,蒋劲松.汶川大地震公路桥梁震害分析及对策[J].岩石力学与工程学报,2009,28(7):1377-1387.ZHUANG Wei-lin,LIU Zhen-yu,JIANG Jin-song.Earthquake-induced Damage Analysis of Highway Bridges in Wenchuan Earthquake and Countermeasures[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(7):1377-1387.
[5]王东升,王吉英,孙治国,等.汶川大地震简支梁桥落梁震害与设计对策[J].防灾减灾工程学报,2011,31(5):595-602.WANG Dong-sheng,WANG Ji-ying,SUN Zhi-guo,et al.Unseating Damage to Simply Supported Bridges During Wenchuan Earthquake and Design Countermeasures[J].Journal of Disaster Prevention and Mitigation Engineering,2011,31(5):595-602.
[6]范立础,聂利英,李建中.地震作用下板式橡胶支座滑动的动力性能分析[J].中国公路学报,2003,16(4):30-35.FAN Li-chu,NIE Li-ying,LI Jian-zhong.Dynamic Characteristic Analysis of Laminated Rubber Bearing Sliding Under Earthquake[J].China Journal of Highway and Transport,2003,16(4):30-35.
[7]汤虎,李建中.地震动特性对公路桥梁板式橡胶支座滑动反应影响[J].工程力学,2013,30(10):154-161,170.TANG Hu,LI Jian-zhong.Effect of Ground Motion Characteristics on Sliding Response of Elastomeric Pad Bearings in Highway Bridges[J].Engineering Mechanics,2013,30(10):154-161,170.
[8]AIKEN I D,NIMS D K,WHITTAKER A S,et al.Testing of Passive Energy Dissipation Systems[J].Earthquake Spectra,1993,9(3):335-370.
[9]XIA C,HANSON R D.Influence of ADAS Element Parameters on Building Seismic Response[J].Journal of Structural Engineering,1992,118(7):1903-1918.
[10]DARGUSH G F,SOONG T T.Behavior of Metallic Plate Dampers in Seismic Passive Energy Dissipation Systems[J].Earthquake Spectra,1995,11(4):545-568.
[11]WHITTAKER A S,BERTERO V V,THOMPSON C L,et al.Seismic Testing of Steel Plate Energy Dissipation Devices[J].Earthquake Spectra,1991,7(4):563-604.
[12]黄小国.连续梁桥防落梁装置试验和理论研究[D].上海:同济大学,2009.HUANG Xiao-guo.Experimental and Theoretical Research on Unseating-prevention Device for Continuous Bridges[D].Shanghai:Tongji University,2009.
[13]VASSEGHI A.Energy Dissipating Shear Key for Precast Concrete Girder Bridges[J].Scientia Iranica,2011,18(3):296-303.
[14]GSID-3:2010,Guide Specifications for Seismic Isolation Design[S].
[15]周颖,吕西林.建筑结构振动台模型试验方法与技术[M].北京:科学出版社,2012.ZHOU Ying,LU Xi-lin.Method and Technology for Shaking Table Model Test of Building Structures[M].Beijing:Science Press,2012.
[16]JTG/T B02-01—2008,公路桥梁抗震设计细则[S].JTG/T B02-01—2008,Guidelines for Seismic Design of Highway Bridges[S].
[17]傅志方,华宏星.模态分析理论与应用[M].上海:上海交通大学出版社,2000.FU Zhi-fang,HUA Hong-xing.Modal Analysis Theory and Application[M].Shanghai:Shanghai Jiao Tong University Press,2000.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心