结构失效模式的快速识别方法

提出了一种延性结构失效模式的快速识别方法；讨论了结构局部刚度对系统可靠性的影响；采用截断枚举法，考虑了奶状态方程间的统计相关性，从每级彀的许多失效序列的构成形式上进行分析，快速识别出主要失效模式，大大减少了计算量，可分析大型结构的可靠性。

Fast identification for failure modes of structural system

This paper presents a method of fast identification for failure modes of ductile structures, and discusses the influence of local member strength change in a structure on the system reliability. Using the general truncated enumeration method, and considering the statistical correlation among limit state equations, a group of hinges at each selection level may be searched and the constitutions of failure sequences are discriminated. Thus the computing time is reduced greatly, significant failure modes are found very quickly and the analysis for the reliability of large scale structure system becomes possible.