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本文以概率论为基础,分析了混凝土重力坝抗滑稳定的可靠性。指出影响大坝稳定的各项设计量都是随机变量,应考虑参数的概率分布类型及变异性用概率方法取值。文中提出了混凝土重力坝抗滑稳定新的计算公式——承截能力极限状态设计表达式,用以确定坝的经济断面。而坝的实际安全度则用可靠性标指和破坏概率来表达。
Based on probability theory, this paper analyzes the reliability of anti-sliding stability of concrete gravity dam. It is pointed out that all the design quantities that affect the stability of the dam are random variables. The probability distribution type and variability of the parameters should be considered in the probability method. In this paper, a new formula for calculating the anti-sliding stability of concrete gravity dam is proposed, which is the expression of the ultimate state of bearing capacity to determine the economical section of the dam. However, the actual safety of the dam is expressed by the reliability index and the probability of destruction.