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钢筋混凝土双柱桥墩抗震能力Pushover分析
王红伟, 刘建新
上海师范大学
摘要:
介绍了Pushover分析方法的基本原理及实施步骤.通过一个算例分析,针对不同侧向力分布模式、不同高度、不同纵向配筋率的双柱桥墩进行Pushover分析.结果表明:对于普通简支梁双柱墩,高度比较低,不同侧向力加载模式对Pushover分析结果影响不大,随着桥墩高度的增加,位移延性系数降低,桥墩延性随着纵向配筋率的提高而降低.
关键词:  Pushover分析  双柱桥墩  侧向力分布  墩高  配筋率  抗震能力
DOI:
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基金项目:上海师范大学土木实验示范中心(B-7603-09-JWP804)
Pushover analysis of the seismic capacity of reinforced concrete double-column bridge piers
WANG Hongwei, LIU Jianxin
College of Civil Engineering,Shanghai Normal University
Abstract:
This article deacribes the basic principle and implementation steps of the Pushover analysis method.By a numerical example,RC double-column piers with different lateral force distribution pattern,different heights and different reinforcement ratio were analyzed.The results show that the analysis results for lower piers of simple supported beam bridges are approximately identical under different lateral force distribution,while with the increase of pier height and longitudinal ratio of reinforcement,the displacement ductility factor is reduced.
Key words:  Pushover analysis  double-column piers  lateral force distribution  height of pier  ratio of reinforcement  seismic capability