【作者】 陶连金； 冯锦华； 边金； 刘春晓；

【Author】 TAO Lianjin;FENG Jinhua;BIAN Jin;LIU Chunxiao;Beijing University of Technology,Center of Cooperative Innovation for Beijing Metropolitan Transportation;

【机构】 北京工业大学北京城市交通协同创新中心；

【摘要】 我国的《城市轨道交通结构抗震设计规范》规定,地下结构地震反应分析在所有的抗震设防类别中都需要进行反应加速度法计算分析,但目前还没有完全做到。本文首先介绍了反应加速度法的基本原理和计算步骤;以某复杂断面地下结构为例,通过一维土层地震反应分析,获得所在地基场各土层对应的水平有效惯性加速度,将其作为反应加速度法的等效荷载以两种不同的方式施加在模型上,进行抗震计算;同时采用反应位移法、动力时程分析方法对地下结构进行抗震分析,比较三种计算方法的结果。结果表明:反应加速度法应用于复杂断面地下结构的抗震设计相比于其他两种抗震分析计算方法,具有较强的可行性和适用性。更多还原

【Abstract】 Code for Seismic Design of Urban Rail Transit Structures(GB 50909-2014) stipulates that seismic response analysis of underground structures needs to be calculated and analyzed by the method of response acceleration in all kinds of seismic precaution,but it has not been fully achieved yet.This paper first introduces the basic principle and calculation steps of the response acceleration method.Taking an underground structure with complex section as an example,we can get the horizontal effective inertial acceleration corresponding to the soil layers in the foundation field through one-dimensional soil seismic response analysis,and apply it to the model in two different ways as the equivalent load of the response acceleration method for seismic calculation.At the same time,the response displacement method and the dynamic time-history analysis method are used to analyze the seismic behavior of underground structures,and the results of the three methods are compared.The results show that the response acceleration method is more feasible and applicable than the other two methods in seismic design of underground structures with complex sections.更多还原