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中文摘要：
根据岩土抗剪强度试验数据的随机性与模糊性特点，首先，在传统随机线性回归分析方法基础上，采用试验值相对估计值的隶属度以反映其间偏离程度及其所具有的模糊性，并将隶属度作为残差权值以减少异常试验数据对拟合结果的影响，从而建立出岩土抗剪强度参数确定的模糊拟合方法．其次，引进模糊随机可靠性理论，对利用模糊拟合法确定的岩土抗剪强度参数进行可靠性评价，确保岩土抗剪强度参数取值的可靠性．然后，根据岩土抗剪强度参数的区间性特点，建立岩土抗剪强度参数取值的区间方法，从而使岩土抗剪强度参数确定方法能反映工程实际．最后，工程实例计算并与同类方法的比较分析表明：本文方法是有效的.
英文摘要：
The experiment data of the shear strength parameters of geomaterial have randomness and fuzziness. Firstly, the degree of membership between experiment data and estimate values was used to reflect the deviation and fuzziness. Based on the traditional random linear regression analysis method, the degree of membership was regarded as the weight of residual error to analyze, which could reduce the reflection of unusual data to fitting result. The fuzzy fitting method to determine shear strength parameters of geomaterial was proposed. Secondly, the fuzzy random reliability theory was used to evaluate the fitting shear strength parameters of geomaterial, which made the shear strength value reliable. Thirdly, the interval method to determine the values was proposed, based on their interval feature, which could reflect the engineering practice. Finally, practical engineering calculation and comparison with other methods have shown that the proposed method is both practical and reasonable.
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