摘要
针对北盘江预应力混凝土连续刚构桥给出了桥梁易损性曲线的系统性分析方法。采用有限元分析软件SAP2000_V14进行有限元模拟及对每个地震-桥梁样本进行非线性时程分析,建立了以PGA为变量的结构需求概率函数。根据地震作用下塑性铰的曲率延性指标进行抗震性能水准划分,给出了桥梁结构的易损性曲线,从而为桥梁结构基于性能的抗震设计提供基础,对实际工程抗震能力评价有一定的借鉴意义。
This paper presents the results of an analytical sei sm ic fragility analysis of Beipanjiang concrete continuous rigid frame bridge.A n onlinear time history response analysis by SAP2000_V14 is performed for each ear thquake-bridge sample to establish the probabilistic characteristics of structu ral demand as a function of peak ground acceleration（PGA）.Furthermore,bridge d amage states are defined by curvature ductility ratio and the results are displa yed as fragility curves,thus providing a basis for performance-based seismic d esign of bridge,and has certain reference significance for the evaluation of se ismic capacity of bridges.
出处
《土木工程与管理学报》
2011年第3期391-394,共4页
Journal of Civil Engineering and Management
基金
中央高校基本科研业务费专项资金(2011QN181)
贵州省交通厅科技项目资助
关键词
地震
连续刚构
有限元
易损性曲线
曲率延性
seismic
continuous rigid frame bridges
finite element
fragility curve
curvature ductility
