SDOF弹塑性体系地震响应的参数影响  

Parametric analysis on seismic response of elastic-plastic SDOF

作　　者：李宇[1] 白桦[1] 朱晞[2] 杨庆山[2] 雷俊卿[2] 

机构地区：[1]长安大学公路学院旧桥检测与加固技术交通行业重点试验室,陕西西安710064 [2]北京交通大学土木建筑工程学院,北京100044

出　　处：《北京交通大学学报》2011年第6期40-43,共4页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金资助项目(50878020);中国博士后科学基金资助项目(2011M501429);中央高校基本科研业务费专项资金项目(CHD2011JC003;CHD2011JC004)

摘　　要：从国外十几次主要地震事件中选取了320条强震记录,按照《铁路工程抗震规范》罕遇地震下6度、7度、8度和9度设防标准进行调幅,并利用弹塑性动力分析程序,采用Takeda双线性刚度退化模型,考虑了不同震级、场地类型、基阶周期的影响,进而对SDOF弹塑性体系的地震响应进行了参数影响研究,为建立与《铁路工程抗震设计规范》相符的弹塑性反应谱提供合理的依据,进而为桥梁结构基于性能的抗震设计提供重要的参考和依据.320 strong motion records are appropriately selected from several earthquake events in the world. Based on Code for Seismic Design of Railway Engineering, PGA of selected seismic motions are adjusted to the standard protected earthquake intensity of 6 degree, 7 degree, 8 degree, 9 degree un- der rarely met earthquake. Based on the Takeda bilinear stiffness degradation model, the elasto-plastic dynamic analysis program is used to do the parametric analysis on the seismic response of elastic-plastic single-degree-of-freedom considering seismic magnitude, site conditions and periods. So, some mean- ingful references are provided for establishing the elasto-plastic response spectra which can help for the performance-based seismic design for bridge.

关 键 词：弹塑性反应 抗震设计 地震震级 场地条件 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]