高墩抗震性能评估的适用地震动强度参数研究  

Research on Appropriate Intensity Measure of Tall Pier Seismic Performance Estimation

作　　者：张超[1] 申彦利[1] 

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038

出　　处：《防灾减灾工程学报》2017年第1期9-16,共8页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家自然科学基金项目(51378169);河北省自然科学基金项目(E2013402072)资助

摘　　要：为了有效评估钢筋混凝土桥梁高墩的抗震性能,选取53条真实地震动记录建立地震记录库,并建立三个不同周期的钢筋混凝土桥墩模型,通过增量动力分析和统计分析的方法,得到各个模型的增量动力曲线以及标准差的正态分布和对数正态分布,同时绘制出三个模型的响应标准差和对数响应标准差随强度参数变化的曲线,研究考虑高阶振型作用的地震动强度参数作为评估钢筋混凝土桥墩抗震性能的地震动强度参数的适用性。研究结果表明,考虑高阶振型的地震动强度参数可以更有效地评估结高墩的抗震性能。In order to effectively estimate the seismic performance of RC tall pier,53 real ground motion records were chosen to establish a record base,and three pier models with different natural period were established.The applicability of the intensity measure,which considers the higher modes for evaluating the seismic performance of the reinforced concrete pier was studied.The IDA curves and standard deviation including normal distribution and lognormal distribution can be obtained by using incremental dynamic analysis and statistical analysis,which can also derive standard deviation of response and log response of three models curves changing with intensity measure.The results show that proposed intensity measure can effectively estimate the seismic performance of tall pier,which can be an excellent foundation of further study of pier seismic performance estimation.

关 键 词：高墩 高阶振型 强度参数 增量动力分析 

分 类 号：TU375.3[建筑科学—结构工程]