摘要
提出了软土地下建筑物地震易损性的分析的思路.根据软土结构动力反映理论,建立易损性分析的动力模型,结合场地的地震危险性分析得到的地震设防标准和动力参数以及结构抗震性能参数,进行软土结构动力分析.利用累积损伤模型进行软土地基液化概率分析,根据液化概率判断地基液化破坏等级.采用JC拟静力方法进行结构抗震失稳的动力可靠性分析,根据失效概率判定结构抗震失稳破坏等级.
The method of seismic vulnerability appraisal and the effective stress FEM analyzing theory for underground construction in soft clay have been studied. By the effective stress FEM, combining the accumulative damage model, the liquefaction probability of soft clay is calculated. The seismic vulnerability grade is got by estimating the liquefaction hierarchy. The pseudo-static computational theory of underground structure is expatiated. At last, the pseudo-static method has been used to calculate the seismic risk probability of underground construction in soft clay. The seismic vulnerability grade is determined by estimating the seismic damage hierarchy of underground structure.
出处
《武汉理工大学学报（交通科学与工程版）》
2007年第3期397-399,421,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家自然科学基金项目资助(批准号:50578122)
关键词
地基液化
地震易损性
累积损伤
JC拟静力方法
可靠性分析
liquefaction of underground
seismic vulnerability
accumulative damage
pseudo-static
re liability analysis
