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岩土工程中的随机-模糊统计方法用模糊理论准确表达了岩土材料的空间变异性。针对随机-模糊方法权重系数的取值进行了讨论,研究了“参照点”在随机-模糊方法的意义,指出了“参照点”与核点无限接近时的最大隶属度才是所要求的正确结果,并根据模糊随机原理提出了直接迭代求解目标函数的流程。采用建议方法对某核电岩土工程中的参数进行了计算,获得了取不同“参照点”时各样本的隶属度曲线以及“参照点”向核点逐步逼近的过程曲线。结果表明,隶属度函数采用指数函数是合理的,样本隶属度分布形态为窄域“正态”分布。所得结论可为随机-模糊统计方法在岩土工程中的应用提供基本理论依据。
Stochastic - Fuzzy Statistical Method in Geotechnical Engineering Fuzzy theory accurately expresses the spatial variability of geomaterials. The value of weight coefficient of stochastic-fuzzy method is discussed. The significance of “reference point ” in stochastic-fuzzy method is pointed out. It is pointed out that the maximum degree of membership of “reference point” According to the fuzzy random principle, a direct iterative solution to the objective function is proposed. The proposed method was used to calculate the parameters of a nuclear power geotechnical engineering. The membership curve of each sample with different reference points and the gradual approximation process curve of the reference point to the nuclear point were obtained. The results show that it is reasonable to use the exponential function for the membership function, and the distribution of the sample membership is narrow “normal ” distribution. The conclusion can provide a basic theoretical basis for the application of stochastic-fuzzy statistical methods in geotechnical engineering.