本文以模糊综合评判及层次分析法为工具提出了确定重力坝目标可靠指标[β]的方法,在单因素评价时,对一些因素,以现行规范为依据建立了隶属函数,对另一些因素,引入了语言变量的模糊向量作为评价向量:构造出综合评价矩阵。最后给出了用这种方法分析确定[β]值的两个工程实例。 This paper proposes a method to determine the reliability index [β] of the gravity dam target using fuzzy comprehensive evaluation and analytic hierarchy process as a tool. In the single factor assessment, some factors are established and the membership function is established based on the current norms. For other factors, The fuzzy vector of linguistic variables was introduced as the evaluation vector: a comprehensive evaluation matrix was constructed. Finally, two engineering examples for analyzing and determining [β] values ​​using this method are given.