It is possible that many failure modes have emergence during the structural service period. For example, dead load strength failure, stiffness failure and fatigue failure.
结构在使用过程中可能会出现各种失效形式，例如静载强度失效、刚度失效和疲劳失效等失效形式。
2
The failure time of elements in structural system under dead load and fatigue load was studied.
对在静载荷和疲劳载荷共同作用下的结构系统中的各失效元件的失效时间进行研究。
3
At present, in many cases, reliability analysis of structural systems of strength failure, stiffness failure and fatigue failure is respectively considered.