土的非线性模型对地下结构动力反应分析结果的影响
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（1青岛理工大学 土木工程学院，青岛 266033；2青岛艾璧希建筑科技咨询公司，青岛 266033）[摘要] 基于土的等价刚性和R-O非线性模型，通过动力有限元分析方法，对处于软弱土层处的某一地下结构的横断面进行抗震性能分析。着重讨论了非线性反应大的侧壁下端的弯矩曲率反应，分析比较土的等价刚性和R-O非线性模型对于结构工程的抗震设计的影响。[关键词] 地下结构; 抗震设计; 地震响应; 等价刚性; R-O非线性模型中图分类号 TU921 文献标识码：A 文章编号：1002-848X（2013）S2-0109-04作者简介：王宝瑞，研究生，1393977102@qq.com。Influence on the dynamic analysis of the underground structure with the nonlinear finite element model of soilWang bao rui1, Tian li1, Jiang zhu1，2（1.School of Civil Engineering, Qingdao Technological University, Qingdao 266033, China 2. Qingdao ABC Construction Technology Consulting Company, Qingdao 266033, China）Abstract：Based on soil equivalent stiffness and R-O nonlinear model, Seismicanalysis of a transverse section of an underground structure which is in soft soil was made by finite element dynamic analysis method in this paper. The moment and curvature response of the bottom part of the side wall was emphatically analyzed. The results show that the e nonlinear response is larger. The soil equivalent stiffness and R-O nonlinear model was discussed in order to reveal the influence for structural engineering seismic design.Keywords: underground structures; seismic design; earthquake response; equivalent rigid; R-O model
