limit state equation

Considering two uncertainties, randomness and fuzziness, in slope stability assessment, and taking fuzzy random variables as basic variables, a slope fuzzy random failure function taking and a slope fuzzy random limit state equation is established.

考虑边坡稳定评价中存在的两种不确定性&模糊性和随机性，以模糊随机变量为基本变量，建立模糊随机功能函数和模糊随机极限方程，得到模糊可靠指标和模糊可靠度。

The quadratic multinomial was imported to replace the iterated equation in constitution of the limit state equation, which let the reliability analysis of the key point come ture.

构造圆形截面正截面偏压承载力极限状态方程时，采用二次多项式替代了求解受压区混凝土截面面积的圆心角的超越方程，实现了对该节点的可靠度计算。