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结构可靠度理论的发展和应用， 正逐步由结构构件转向结构系统， 本文介绍了系统可靠度中寻找显著失效模式的方法， 包括荷载增量法、分枝限界法、β分解法等， 以及估算结构系统可靠度的区间估计法和点估计法。综述了系统可靠度在桥梁方案比选、既有桥梁的评价及桥梁管理系统等方面的应用。
The development and application of the theory of structural reliability are gradually moving from structural components to structural systems. This paper introduces the methods of finding significant failure modes in the system reliability, including load increment method, branch and bound method, β decomposition method and so on, Interval and Point Estimation of Structural System Reliability. The reliability of the system is reviewed in the selection of bridges, the evaluation of existing bridges and the application of bridge management system.