汶川地震桥梁震害经验及抗震研究若干新进展
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摘要
2008年5月12日我国四川省汶川县发生8.0级大地震,造成大量公路桥梁破坏,并为桥梁抗震研究留下了众多资料。总结了汶川地震桥梁震害经验,认为宜重视桥梁近断层地震动响应及防落梁措施、小半径曲线梁桥地震防倒塌设计、桥梁延性抗震设计及细部配筋和深水高桥墩地震损伤及控制等抗震问题。综述了课题组近些年对桥梁抗震研究的若干新进展,包括梁式桥防落梁抗震设计理念及方法、钢筋混凝土桥墩地震抗剪强度及变形能力研究、曲线梁桥地震破坏机理数值分析与小半径曲线梁桥地震防倒塌设计对策等。
The great Wenchuan earthquake,which measured as 8.0 Ms and occurred on May 12,2008 in Sichuan province of China,has caused severe damage to many highway bridges and also left us with valuable information that can be analyzed to reduce potential losses associated with future earthquakes.The Lessons learned from Wenchuan seismic damages of highway bridges were summarized.It is believed that special attention should be paid to(1) bridge seismic response and unseating damages subjected to near-fault ground motions;(2) preventive design of collapse damage of curved girder bridges with small radius;(3) ductility and seismic design,detailed reinforcement of bridges and seismic damage control of high-rise piers under deep water.The recent research progress of our research team on seismic performance of highway bridges was summarized.It includes design idea and method of unseating protection of highway bridges,deformation capacity and shear strength of PC bridge piers,numerical simulation of seismic damage mechanism of curved girder bridges,and countermeasures to prevent collapse of curved girder bridges with small radius.
The great Wenchuan earthquake,which measured as 8.0 Ms and occurred on May 12,2008 in Sichuan province of China,has caused severe damage to many highway bridges and also left us with valuable information that can be analyzed to reduce potential losses associated with future earthquakes.The Lessons learned from Wenchuan seismic damages of highway bridges were summarized.It is believed that special attention should be paid to(1) bridge seismic response and unseating damages subjected to near-fault ground motions;(2) preventive design of collapse damage of curved girder bridges with small radius;(3) ductility and seismic design,detailed reinforcement of bridges and seismic damage control of high-rise piers under deep water.The recent research progress of our research team on seismic performance of highway bridges was summarized.It includes design idea and method of unseating protection of highway bridges,deformation capacity and shear strength of PC bridge piers,numerical simulation of seismic damage mechanism of curved girder bridges,and countermeasures to prevent collapse of curved girder bridges with small radius.
引文
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[12]姚红兵.庙子坪岷江大桥设计及特色[J].西南公路,2003(1):31-33YAO Hongbing.Structural Design Special and Features ofMiaoziping Bridge[J].Southwest Highway,2003(1):31-33.
[13]LIU K Y,CHANG K C.Parametric Study on Performanceof Bridge Retrofitted by Unseating Prevention Devices[J].Earthquake Engineering and Engineering Vibration,2006,5(1):111-118.
[14]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 ofHighway Bridges[S].
[15]TADA-AKI T.Comparative Performance of Seismic DesignCodes for Concrete Structures[M].Boulevard,UK:Elsevier Science Ltd.,2000.
[16]毕桂平.城市大型复杂立交工程抗震关键性问题研究[D].上海:同济大学,2004.BI Guiping.Study on Some Key Issues on Seismic Designof Large-scale Complicated Interchanges[D].Shanghai:Tongji University,2004.
[17]孙治国,王东升,杜修力,等.钢筋混凝土桥墩塑性铰区约束箍筋用量研究[J].中国公路学报,2010,23(3):48-57.SUN Zhiguo,WANG Dongsheng,DU Xiuli,et al.Research on Amount of Confining Reinforcement inPotential Plastic Hinge Regions of RC Bridge Columns[J].China Journal of Highway and Transport,2010,23(3):48-57.
[2]王克海,孙永红,韦韩,等.汶川地震后对我国结构工程抗震的几点思考[J].公路交通科技,2008,25(11):54-59.WANG Kehai,SUN Yonghong,WEI Han,et al.Comments on Seismic Strengthening for StructuralEngineering in China after Wenchuan Earthquake[J].Journal of Highway and Transportation Research andDevelopment,2008,25(11):54-59.
[3]王东升,郭迅,孙治国,等.汶川大地震公路桥梁震害初步调查[J].地震工程与工程振动,2009,29(3):84-94.WANG Dongsheng,GUO Xun,SUN Zhiguo,et al.Damage to Highway Bridges during Wenchua Earthquake[J].Earthquake Engineering and Engineering Vibration,2009,29(3):84-94.
[4]CHANG K C,CHANG D W,TSAI M H,et al.SeismicPerformance of Highway Bridges[J].EarthquakeEngineering and Engineering Seismology,2000,2(1):55-77.
[5]王东升,杨海红,王国新.考虑邻梁碰撞的多跨长简支梁桥落梁震害分析[J].中国公路学报,2005,18(3):54-59.WANG Dongsheng,YANG Haihong,WANG Guoxin.Seismic Analysis of Girders Falling Down in Multi-SpanLong Simply Supported Bridges with Adjacent PoundingEffects[J].China Journal of Highway and Transport,2005,18(3):54-59.
[6]KAWASHIMA K,TAKAHASHI Y,GE H,et al.Reconnaissance Report on Damage of Bridges in 2008Wenchuan,China,Earthquake[J].Journal ofEarthquake Engineering,2009,13(7):965-996.
[7]孙治国,王东升,郭迅,等.汶川大地震绵竹市回澜立交桥震害调查[J].地震工程与工程振动,2009,29(4):132-138.SUN Zhiguo,WANG Dongsheng,GUO Xun,et al.Damage Investigation of Huilan Interchange in Mianzhuafter Wenchuan Earthquake[J].Earthquake Engineeringand Engineering Vibration,2009,29(4):132-138.
[8]王东升,孙治国,李晓莉,等.汶川大地震曲线梁桥震害及破坏机理分析[J].防灾减灾工程学报,2010,30(5):572-579.WANG Dongsheng,SUN Zhiguo,LI Xiaoli,et al.Seismic Damage Investigation and Failure MechanismAnalysis of Curved Bridges in Wenchuan Earthquake[J].Journal of disaster Prevation,2010,30(5):572-579.
[9]KAWASHIMA K,PENZIEN J.Theoretical andExperimental Dynamic Behavior of a Curved Model BridgeStructure[J].Earthquake Engineering and StructuralDynamics,1979,7(2):129-145.
[10]FENVES G,ELLEY M.Behavior and Failure Analysis ofa Multiple-Frame Highway Bridge in the 1994 NorthridgeEarthquake,Report No.PEER 98/08[R].Berkeley,California:Pacific Earthquake Engineering ResearchCenter,1998.
[11]姚红兵,蒋劲松,黄麟.庙子坪岷江大桥震害与修复加固[J].西南公路,2008(4):36-40.YAO Hongbing,JIANG Jinsong,HUANG Lin.SeismicDamage and Strengthening of Miaoziping Bridge[J].Southwest Highway,2008(4):36-40.
[12]姚红兵.庙子坪岷江大桥设计及特色[J].西南公路,2003(1):31-33YAO Hongbing.Structural Design Special and Features ofMiaoziping Bridge[J].Southwest Highway,2003(1):31-33.
[13]LIU K Y,CHANG K C.Parametric Study on Performanceof Bridge Retrofitted by Unseating Prevention Devices[J].Earthquake Engineering and Engineering Vibration,2006,5(1):111-118.
[14]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 ofHighway Bridges[S].
[15]TADA-AKI T.Comparative Performance of Seismic DesignCodes for Concrete Structures[M].Boulevard,UK:Elsevier Science Ltd.,2000.
[16]毕桂平.城市大型复杂立交工程抗震关键性问题研究[D].上海:同济大学,2004.BI Guiping.Study on Some Key Issues on Seismic Designof Large-scale Complicated Interchanges[D].Shanghai:Tongji University,2004.
[17]孙治国,王东升,杜修力,等.钢筋混凝土桥墩塑性铰区约束箍筋用量研究[J].中国公路学报,2010,23(3):48-57.SUN Zhiguo,WANG Dongsheng,DU Xiuli,et al.Research on Amount of Confining Reinforcement inPotential Plastic Hinge Regions of RC Bridge Columns[J].China Journal of Highway and Transport,2010,23(3):48-57.
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