岩土工程学报2017，Vol.39Issue(10)：1761-1769,9.DOI:10.11779/CJGE201710002
土-地铁动力相互作用体系侧向变形特征研究
Characteristics of lateral deformation of soil-subway dynamic interaction system
摘要
Abstract
With regard to the insufficient researches on the reliability of the existing seismic analysis methods for underground structures for the seismic design of large-scale underground structures,three site classifications are designed according to the relevant seismic design codes,and the characteristics of seismic deformation of the interaction system are analyzed under 84 conditions by using the finite element method.The results show that when the peak acceleration of input earthquake wave is larger than 0.2g with any kind of site classification or when the site classification is Ⅳ under very small peak acceleration,the soil-structure interaction coefficients are all smaller than one,which means that the lateral soils with large deformation may push the underground structure to be deformed maximally.In other word,the large deformation of the surrounding soil foundation is unfavourable to the seismic performance of the large underground structures.On the contrary,the maximal deformation of the underground structures should be constrained by the surrounding soils,which is favourable to the seismic performance of the underground structures.Meanwhile,the effect laws of the site classification and the properties of input ground motion on the seismic deformation of the large underground structures are also analyzed.关键词
地铁/场地类别/抗震分析/侧向变形/土与结构相互作用Key words
subway/site classification/seismic analysis/lateral deformation/soil-structure interaction分类
建筑与水利引用本文复制引用
庄海洋,王雪剑,王瑞,陈国兴..土-地铁动力相互作用体系侧向变形特征研究[J].岩土工程学报,2017,39(10):1761-1769,9.基金项目
国家自然科学基金面上项目(51778290,51278246) （51778290,51278246）
江苏省自然科学基金面上项目(BK20141458) （BK20141458）
江苏省高校自然科学基金重大项目(16KJA560001) （16KJA560001）
