系统可靠度及其在桥梁工程中的应用前景

System Reliability and Its Application Prospects in Bridge Engineering

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 application and development of structural reliability theory is now turning from component level to system level This paper reviews the representative methods in search for failure modes,including incremental method,branch and bound technique,β?unzipping method,etc The paper also presents the estimation methods of system reliability and the role of system reliability in evaluation of existing bridge and bridge management system