基于区间方法的岩质边坡稳定性非概率可靠性分析

Non-probabilistic Reliability Analysis of Rock Slope Stability Based on Interval Methods

在综合分析岩土参数区间性的基础上,通过引入区间分析方法和非概率可靠性思想,建立岩质边坡稳定的非概率可靠性模型,并针对区间运算结果扩张问题,引入区间截断法和区间优化法,对边坡非概率可靠性指标进行较为精确的求解。然后,以湖北某岩质高边坡为实例,进一步探讨了岩体参数变异性对岩质边坡稳定的非概率可靠性指标的影响规律。

Based on a comprehensive analysis of geotechnical parameters,the interval analysis method and non-probabilistic reliability thinking were introduced to establish non-probabilistic reliability analysis mode for rock slope stability.In addition,as for the question of the expansion of interval calculation result,the interval-truncation approach and interval optimization method were adopted to obtain non-probabilistic reliability index more accurately.Finally,the effect of the variability of rock parameters on the non-probabilistic reliability of the rock slope stability was further explored,by taking a high rock slope in Hubei as an example.