防灾减灾工程学报2017，Vol.37Issue(2)：177-186,10.DOI:10.13409/j.cnki.jdpme.2017.02.001
土与结构接触特性对地下结构地震反应的影响研究
Research on the Seismic Responses of Underground Structures Considering the Soil and Structure Contact
摘要
Abstract
Taking the Dakai subway station as an example,the numerical simulation method was used to evaluate the structural responses by interstory drift angle.The structural seismic responses were calculated when the contact surface is binding and the contact friction coefficient is 0.2 and 0.4 respectively under the three conditions which are the elastic soil contacts with the elastic structure,the elastic-plastic soil contacts with the elastic structure and the elastic-plastic soil contacts with the elastic-plastic soil structure.Meanwhile,the relative modulus of soil-structure was changed.The moment of the maximum structural deformation at the instant of peak acceleration,peak displacement and peak velocity was extracted to contrast the interlayer displacement angles when the friction coefficient of the contact surface is 0.2 and 0.4 and the binding condition.The results show that the mechanical properties of the material are different,and the influence of the contact characteristics on the structural responses is different.The influence of the contact characteristics on the seismic response of underground structures was analyzed by changing the depth of the structure.The results show that the influence of the contact characteristics on the seismic responses of underground structures is relatively great for shallow-buried structure,the influence is small for deep-buried structure,and the peak acceleration instant is the control time for the shallow-buried structure,while the peak displacement instant is the control time for the deep-buried structure.关键词
地下结构/地震反应/接触非线性/材料非线性/数值模拟Key words
underground structure/seismic response/contact nonlinearity/material nonlinearity/numerical simulation分类
建筑与水利引用本文复制引用
路德春,王欣,罗磊,杜修力..土与结构接触特性对地下结构地震反应的影响研究[J].防灾减灾工程学报,2017,37(2):177-186,10.基金项目
国家自然科学基金项目(51421005、51522802)资助 （51421005、51522802）
