基于易损性能分析的山店江大桥高墩抗震评估技术研究
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摘要
以汝郴高速公路山店江大桥1号高墩为工程背景,通过对钢筋混凝土截面的弯矩-曲率分析确定高墩的损伤指标,利用midas/civil软件进行非线性时程分析,得到该桥墩的理论易损性曲线,并讨论壁厚和基础约束刚度2个参数对桥墩易损曲线的影响。研究成果可为预测结构的抗震性能、结构的抗震设计、加固和维修提供参考。
On the background of NO.1 pier of Shandian River Bridge in Ruchen highway,the damage criteria of the high pier were determined through bending moment-curvature analysis of reinforced concrete section and analytical fragility curves of the pier were obtained through non-linear time-history analysis by use of midas/civil software.The influence of the wall thickness and foundation restraint stiffness on fragility curves of the pier was discussed.The results can provide some references to prediction of structural seismic performance,seismic design,structure reinforcement and maintenance.
On the background of NO.1 pier of Shandian River Bridge in Ruchen highway,the damage criteria of the high pier were determined through bending moment-curvature analysis of reinforced concrete section and analytical fragility curves of the pier were obtained through non-linear time-history analysis by use of midas/civil software.The influence of the wall thickness and foundation restraint stiffness on fragility curves of the pier was discussed.The results can provide some references to prediction of structural seismic performance,seismic design,structure reinforcement and maintenance.
引文
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[9]冯杰.桥梁结构地震易损性分析研究[D].成都:西南交通大学,2010.FENG Jie.Seismic vulnerability analysis for bridge struc-tures[D].Chengdu:Southwest Jiaotong University,2010.
[10]Dimitrions Vanvatsiks C,Allin Cornell.Incremental dy-namic analysis[J].Earthquake Engineering and Struc-tural Dynamics,2002(31):491-514.
[2]李建中,宋晓东,范立础.桥梁高墩位移延性能力的探讨[J].地震工程与工程振动,2005,25(1):43-48.LI Jianzhong,SONG Xiaodong,FAN Lichu.Investigationfor displacement ductility capacity of tall piers[J].Earth-quake Engineering and Engineering Vibration,2005,25(1):43-48.
[3]张菊辉.基于数值模拟的规则梁桥墩柱的地震易损性分析[D].上海:同济大学,2006.ZHANG Juhui.Study on seismic vulnerability analysis ofnormal beam bridge piers based on numerical simulation[D].Shanghai:Tongji University,2006.
[4]雷俊卿.公路桥梁抗震防灾安全性评估分析[J].西南交通大学学报,1999,34(5):540-544.LEI Junqing.Evaluation of seismic resistance of highwaybridges[J].Journal of Southwest Jiaotong University,1999,34(5):540-544.
[5]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,2004,37(6):47-51.Hwang H,LIU Jingbo.Seismic fragility analysis of rein-forced concrete bridges[J].China Civil Engineering Jour-nal,2004,37(6):47-51.
[6]范立础,卓卫东.桥梁延性抗震设计[M].北京:人民交通出版社,2001.FAN Lichu,ZHUO Weidong.Ductility seismic design ofbridge[M].Beijing:China Communications Press,2001.
[7]邱顺冬.桥梁工程软件midas Civil应用工程实例[M].北京:人民交通出版社,2011.QIU Shundong.Bridge engineering software MIDAS civilapplication project[M].Beijing:China CommunicationsPress,2011.
[8]邹振兴.高陡边坡桥梁高墩设计与施工若干关键问题研究[D].长沙:中南大学,2011.ZOU Zhenxing.Some key researches on design and con-struction of high bridge piers on high and steep slopes[D].Changsha:Central South University,2011.
[9]冯杰.桥梁结构地震易损性分析研究[D].成都:西南交通大学,2010.FENG Jie.Seismic vulnerability analysis for bridge struc-tures[D].Chengdu:Southwest Jiaotong University,2010.
[10]Dimitrions Vanvatsiks C,Allin Cornell.Incremental dy-namic analysis[J].Earthquake Engineering and Struc-tural Dynamics,2002(31):491-514.
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