【摘要】 为了在城市轨道交通高架桥梁抗震设计中实现弹塑性分析和性能设计的结合,基于弹塑性反应谱方法研究了抗震设计的整体流程.给出了基于弹塑性反应谱法进行高架桥梁地震反应分析的基本方法,确立了与该方法相应的强度、构件变形和基础位移等性能指标,形成了可供工程设计所实际应用的完整设计流程.工程实例分析表明,弹塑性反应谱分析可细致考查结构各指标在强烈地震作用下的反应值,与非线性时程分析相比,该方法简明、高效、稳定,并具备谱分析的统计意义,可作为城市轨道交通高架桥梁基于性能抗震设计的实用方法.更多还原

【Abstract】 In order to achieve a combination between the elasto-plastic analysis and the performance-based seismic design for the urban rail transit viaducts(RTV),the entire seismic design procedure was created based on the elasto-plastic response spectrum analysis(EPRSA) method.The researchers studied the analysis method used in the seismic design.The researchers also established performance indices,which included strength,member deformation and foundation displacement,and then formed the entire procedure for the practical seismic design work.Analysis results show that the EPRSA method had advantages such as: conciseness,efficiency,calculation stability and statistical meaning for the spectrum analysis in contrast to the nonlinear time-history analysis.The EPRSA method was identified as being a practical method in the seismic design of the urban rail transit viaducts.更多还原