边坡稳定可靠度分析的一种实用方法

A practical method for the reliability analysis of slope stability

Rosenblueth方法是一种简单实用的可靠度指标计算方法,不需要了解各种状态变量的概率分布,只要利用它们的均值和方差,就可以求得边坡的可靠度指标,其计算满足精度要求。文章论述了Rosenblueth方法的基本原理,用FORTRAN语言编制了计算程序,并通过算例比较证明了Rosenblueth方法的优点。在工程实际分析中,是一种值得推广应用的方法。

The Rosenblueth method is a simple and practical calculation method of reliability index as the probability distribution of all kinds of state variable need not be known,and only by using the averages and variance of state variables can the reliability index of soil slopes be got, and the calculation accuracy meets the precision requirement. In this paper,the basic principle of the Rosenblueth method is described,and the FORTRAN language is used to write the calculation program. A comparison among the Rosenblueth method,the Fosm method and the Monte Carlo method is made through a calculation example,which proves the advantage of the Rosenblueth method. The Rosenblueth method can be applied widely to the stability evaluation of common soil slopes.