铁道标准设计2018，Vol.62Issue(2)：133-139,7.DOI:10.13238/j.issn.1004-2954.201612230003
可液化土层对地下结构地震反应的影响研究
Research on Influence of Liquefiable Soil on Seismic Response of Underground Structure
摘要
Abstract
In order to study the significant influence of large deformation induced by sand on the metro station structure,the conditions where an underground structure is located in a liquefiable soil layer and a non-liquefied soil layer are considered and compared based on the PL-Fin constitutive model developed by FLAC3D.The liquefied state,displacement and deformation of the structure and the stress of the structural and surrounding soils in the case of large deformation are analyzed and compared.The main conclusions are that the soil at the bottom of the structure is most easily liquefied,which results in movement of the soil on both sides of the structure and in incline and rise of the structure.The stress of the structural and surrounding soils on the left side of the structure in liquefied soil is similar to that of non-liquefied soil in the slightly liquefied state,but it is much different from the soil at the bottom of the structure in a severely liquefied state.关键词
液化/土层-地下结构/PL-Fin模型/地震反应Key words
Liquefaction/Soil layer-underground structure/PL-Fin model/Seismic response分类
建筑与水利引用本文复制引用
刘春晓,陶连金,边金,陈向红,张倍..可液化土层对地下结构地震反应的影响研究[J].铁道标准设计,2018,62(2):133-139,7.基金项目
北京市自然科学基金委员会-北京市科学技术研究院联合资助项目(L140004) （L140004）
国家自然科学基金创新研究群体项目(51421005) （51421005）
国家自然科学基金资助项目(41272337,41572276) （41272337,41572276）
