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依据模糊可能性理论,系统地建立含模糊变量时结构的可靠性计算模型· 旨在解决模糊结构、模糊＿随机结构和模糊状态假设下结构的可靠性计算问题· 所建模型可给出模糊结构失效的可能度和模糊＿随机结构失效概率的可能性分布· 研究表明:对同时含模糊变量和随机变量的混合可靠性计算问题,把失效概率(或可靠度)作为模糊变量,能更客观地反映系统的安全状况· 算例分析说明了文中方法的合理性和有效性·
According to the theory of fuzzy probability, the reliability calculation model of a structure with fuzzy variables can be systematically established. The problem is to solve the problem of calculating the reliability of a structure with fuzzy structure, fuzzy-random structure and fuzzy state hypothesis. The model can give fuzzy structure Probability of failure and fuzzy probability distribution of stochastic structural failure probability · The study shows that for the calculation of mixed reliability with both fuzzy and random variables, the probability of failure (or reliability) as a fuzzy variable can be more objective Reflect the security status of the system · Case study illustrates the rationality and effectiveness of the method