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本文介绍了高斯积分法计算重力坝失效概率的基本公式和方法;研究了随机变量的不同分布、特别是混凝土与基岩接触面抗剪断摩擦系数f’和凝聚力C’的分布类型对重力坝抗滑稳定失效概率的影响;以及坝高和下游坡比取不同值时坝体失效概率的变化.本文为重力坝的可靠性分析提供了有效的计算方法和规律性的分析资料.
In this paper, the basic formulas and methods for calculating the failure probability of gravity dam by Gauss integral method are introduced. The distribution of the random distributions of different variables, especially the distribution of shear resistance coefficient f ’and cohesion C at the interface between concrete and bedrock, And the failure probability of sliding stability, as well as the failure probability of dam when the dam height and downstream slope ratio are taken as different values.This paper provides an effective calculation method and regularity analysis data for the reliability analysis of gravity dam.