空腹式连续刚构桥抗震性能评价
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摘要
以一座在建的空腹式连续刚构桥为研究对象,采用SAP2000软件建立三维有限元模型,以桥墩的位移延性比为损伤指标,采用IDA法对结构进行地震响应分析。在结构地震易损性分析中,同时考虑了地震动和结构材料参数的不确定性,采用拉丁超立方抽样法形成地震动-桥梁结构样本对,通过大量非线性计算得到了该桥在近场、远场地震作用下的易损性曲线。同时在此基础上进行了全桥在E1和E2水准抗震性能评价。
The 3D finite element model was conducted for an open-web continuous rigid frame bridge by using the SAP2000 software.Furthermore,the uncertainty of earthquake ground motions and structure material parameters were simultaneously considered in the structural seismic fragility analysis,the earthquake-structure sample pairs were constructed by the Latin hypercube sampling method.The seismic fragility analyses were obtained for the bridge subjected to the near-field and far-field earthquake ground motions by employing the IDA(Incremental Dynamic Analysis) analysis method,respectively.Finally,the seismic performance probability evaluation for the whole bridge was performed under the E1 and E2 seismic precautionary criterion.
The 3D finite element model was conducted for an open-web continuous rigid frame bridge by using the SAP2000 software.Furthermore,the uncertainty of earthquake ground motions and structure material parameters were simultaneously considered in the structural seismic fragility analysis,the earthquake-structure sample pairs were constructed by the Latin hypercube sampling method.The seismic fragility analyses were obtained for the bridge subjected to the near-field and far-field earthquake ground motions by employing the IDA(Incremental Dynamic Analysis) analysis method,respectively.Finally,the seismic performance probability evaluation for the whole bridge was performed under the E1 and E2 seismic precautionary criterion.
引文
[1]李建中,宋晓东,范立础.桥梁高墩位移延性能力的探讨[J].地震工程与工程震动,2005,25(1):43-48.
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[3]谷音,黄怡君,卓卫东.高墩大跨连续刚构桥梁地震易损性分析[J].地震工程与工程震动,2011,31(2):91-97.
[4]吴文鹏,李立峰,王练画,等.基于IDA的高墩大跨桥梁地震易损性分析[J].地震工程与工程震动,2012,32(3):117-123.
[5]Dimitrios Vamvatsikos,Allin Cornell C.Incremental Dynamic Analysis[J].Earthquake Engineering and Structural Dy-namics,2002,31:491-514.
[6]Basoz Nesrin,Kiermidjian Anne S.Risk Assessment of Bridge and Highway Systems from the Northridge Earthquake[J].Progress in Research and Practice,1997,12:65-79.
[7]Hwang H,Liu J B,Chiu Y H.Seismic Fragility Analysis of Highway Bridges[R].Menphis:Center for Earthquake Re-search and Information of University of Memphis,2000.
[8]Federal Emergency Management Agency.HAZUS99User’s Manual[S].Washington,D C:Federal Emergency Manage-ment Agency,1999.
[9]Ian G Buckle,Ian Friedland,John Mander,et al.公路结构物抗震加固改造手册(上册:桥梁)[M].王克海,李茜,翟东武,译.北京:人民交通出版社,2008.
[2]Hwang H,刘晶波.地震作用下钢筋混凝土桥梁结构易损性分析[J].土木工程学报,2004,36(7):47-51.
[3]谷音,黄怡君,卓卫东.高墩大跨连续刚构桥梁地震易损性分析[J].地震工程与工程震动,2011,31(2):91-97.
[4]吴文鹏,李立峰,王练画,等.基于IDA的高墩大跨桥梁地震易损性分析[J].地震工程与工程震动,2012,32(3):117-123.
[5]Dimitrios Vamvatsikos,Allin Cornell C.Incremental Dynamic Analysis[J].Earthquake Engineering and Structural Dy-namics,2002,31:491-514.
[6]Basoz Nesrin,Kiermidjian Anne S.Risk Assessment of Bridge and Highway Systems from the Northridge Earthquake[J].Progress in Research and Practice,1997,12:65-79.
[7]Hwang H,Liu J B,Chiu Y H.Seismic Fragility Analysis of Highway Bridges[R].Menphis:Center for Earthquake Re-search and Information of University of Memphis,2000.
[8]Federal Emergency Management Agency.HAZUS99User’s Manual[S].Washington,D C:Federal Emergency Manage-ment Agency,1999.
[9]Ian G Buckle,Ian Friedland,John Mander,et al.公路结构物抗震加固改造手册(上册:桥梁)[M].王克海,李茜,翟东武,译.北京:人民交通出版社,2008.
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