【摘要】 影响结构可靠度的不确定性因素除了随机不确定性以外,还有模糊不确定性.将基于随机有限元法的可靠度计算方法与峰型模糊数的运算法则相结合,推导出结构模糊随机可靠度的计算方法.分析和计算表明:该模糊随机可靠度分析模型与传统可靠度方法在极限临界点处具有同一性,同时考虑工程结构具有的随机性和模糊性,能够克服单纯考虑其中一种不确定性因素的不足,为工程设计提供了更多的参考信息.更多还原

【Abstract】 The uncertain factors affecting reliability of structures include not only stochastic uncertainty but also fuzzy one.Combining the method for reliability analysis based on stochastic finite element method with peak fuzzy number’s operations,a method for fuzzy stochastic reliability analysis of structures is established.The analysis and calculation indicate that the analysis model for fuzzy stochastic reliability is corresponding to the traditional reliability method at the limit point.Taking into account the randomness and fuzziness of structure,can be overcome the lack of only consider one of the uncertainty factors,providing us more valuable information for structural design.更多还原