基于参数模糊性分析的边坡稳定性研究

岩土工程参数中的各种信息都存在模糊性。通过对岩土样本力学参数试验值的研究，提出样本统计特征分析时应该充分考虑模糊不确定性因素对参数特征值的影响。在确定的参数隶属函数基础上，推导了岩土样本国学参数模糊统计特征值的计算公式。应用实例表明，由于文中提出的计算方法考虑了参数模糊性的影响，其计算结果比按常规统计方法得到的结果更具合理性。采用模糊均值和方差对边坡进行分析后的结果表明，边坡稳定性模糊分析方法是一种更为可靠的分析方法。

Stability Analysis of Slope Based on Analyzing Fuzzy Character of Parameters

Vague information widely exits in parameters used for the analysis of geotechnical engineering. After the distribution of eigenvalue of samples had been studied, it was indicated that the vague factors in parameters could not be ignored. According to the membership function of parameters, the equations of fuzzy eigenvalue of sample parameters was deduced. The case study indicates that the fuzzy method is better than the classical stochastic method because its variance is less than the results obtained by stochastic method in any case. The results also show that the fuzzy method is a more reasonable one than other methods for stability analysis of slope .