哈尔滨工程大学学报2017，Vol.38Issue(4)：532-537,6.DOI:10.11990/jheu.201603069
考虑桥台性能影响的连续梁桥地震易损性分析
Seismic fragility analysis of a continuous bridge considering the performance of abutments
摘要
Abstract
There is limited work on the impact of abutment property on the seismic fragility of bridge.Therefore,the seismic fragility analysis of continuous bridge considering the effects of abutment was presented in this paper.Firstly,finite element models for the three-span continuous bridges with and without abutments were established.Secondly,four sets of 100 earthquake ground motion records were selected from the Pacific Earthquake Engineering Research Center(PEER) strong motion database for four different site conditions to simulate the uncertainty of ground motions.And they were randomly combined with bridge samples.Thirdly,the seismic responses of each component were obtainedvia nonlinear time history analysis using OpenSees and the four limit states of different components were defined.Lastly,fragility curves of the components were obtained via reliability and probability methods.The study found that the seismic responses of the bridge were significantly influenced by abutments,and the damage probability of other componentsconsiderably increased for the bridge without abutments.Under the same site conditions,piers were the most vulnerable components,followed by the sliding bearings,and then abutments.关键词
连续梁桥/桥台/场地/不确定性/地震响应/易损性曲线/OpenSeesKey words
continuous bridge/abutment/uncertainty/site condition/seismic response/fragility curve/OpenSees分类
交通工程引用本文复制引用
郭军军,钟剑,袁万城,徐变..考虑桥台性能影响的连续梁桥地震易损性分析[J].哈尔滨工程大学学报,2017,38(4):532-537,6.基金项目
国家自然科学基金项目(51478339,51278376,91315301) （51478339,51278376,91315301）
江西省科技计划(20151BBG70064). （20151BBG70064）
