Damage investigation of girder bridges under the Wenchuan earthquake and corresponding seismic design recommendations

查看全文 作　　者：Li Jianzhong Peng Tianbo Xu [1]Yan

机构地区：[1]State Key Lab for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China

出　　处：《Earthquake Engineering and Engineering Vibration》索引2008年第7卷第4期,共8页

基　　金：National Natural Science Foundation Under Grant No.50578118 摘　　要：An investigation of girder bridges on National Highway 213 and the Doujiangyan-Wenchuan expressway after the Wenchuan earthquake showed that typical types of damage included:span collapses due to unseating at expansion joints;shear key failure;and damage of the expansion joint due to the slide-induced large relative displacement between the bottom of the girder and the top of the laminated-rubber bearing.This slide,however,can actually act as a form of isolation for the substructure,and as a result,the piers and foundation of most of the bridges on state route 213 suffered minor damage.The exception was the Baihua Bridge,which suffered severe damage.Corresponding seismic design recommendations are presented based on this investigation. 关键词：地震研究损害预报

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Damage investigation of girder bridges under the Wenchuan earthquake and corresponding seismic design recommendations

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