针对三峡升船机的卷筒要求高可靠性这一特点，提出用随机有限元法计算其强度的可靠度，以提高计算的准确性，对三峡升船机卷筒强度的可靠性设计提供了较为信服的依据。其中，根据其受载特点，考虑了节点载荷之间的相关性，并建立了采用板壳单元时结构可靠度的计算方法。该方法具有可充分利用ＳＡＰ程序分析结果，自编程序小等优点。 In view of the high dependability of the drum of Three Gorges ship lift, the reliability of the finite element method is calculated to improve the reliability of the calculation, which provides the reliability design of the drum strength of the Three Gorges ship lift. More convincing basis. Among them, according to its load characteristics, the correlation between node loads is considered, and the calculation method of structural reliability when plate elements are adopted is established. The method has the advantages of making full use of SAP program analysis results, self programming.