【摘 要】
：
提出考虑土性参数空间变异性的边坡模糊随机可靠度分析方法.按Hassan&Wolff方法对土性参数进行组合,通过确定性分析得到一系列潜在滑面;利用随机场模型描述土性参数的空间变
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提出考虑土性参数空间变异性的边坡模糊随机可靠度分析方法.按Hassan&Wolff方法对土性参数进行组合,通过确定性分析得到一系列潜在滑面;利用随机场模型描述土性参数的空间变异性,沿各潜在滑面对土性参数进行方差折减;采用降半正态分布函数描述边坡失效状态的模糊性,基于概率积分计算各潜在滑面对应的的可靠度;搜索最小可靠度对应的潜在滑面作为边坡的临界滑面,以最小可靠度作为边坡的可靠度.结合算例分析了隶属函数的形状参数、土性参数相关距离及黏聚力和内摩擦角的变异性对边坡可靠度的影响.
A method of slope random reliability analysis considering the spatial variability of soil parameters is proposed.According to Hassan & Wolff method, a series of potential slip surfaces are obtained by deterministic analysis. The spatial variability of soil parameters And the variance of soil parameters along the potential slip surface is reduced. The fuzzy function of slope failure state is described by the falling normal distribution function, and the reliability of each potential slip surface is calculated based on the probability integral. The minimum and maximum reliability Degree as the critical slip surface of the slope and the minimum reliability as the reliability of the slope.The shape parameters of the membership function, the correlation distance of the soil parameters and the cohesion force and internal friction angle Influence of Variability on Slope Reliability.
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