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本文的主要目的在于介绍一种用于稳定性问题分析的替代方法,即众所周知的运动单元法(KEM)的应用。其要点不但要综合优化迭代法计算安全系数值,而且要提出KEM的假定背景和基本方程式。借助于波兰海岸上一个典型的并且具有完整记录资料的峭壁断面,文中把KEM的计算结果与常用方法的计算结果做了比较。为了便于比较,使用了四种基于圆弧滑面的常规方法(费兰纽斯,毕晓普江布,摩根斯顿—普赖斯)。在稳定性计算中使用的土工参数在事前经原位和实验室试验确定。比较表明,KEM得到了相同的结果,可以考虑作为一种具有较大应用潜力的可靠替代方法。
The main purpose of this paper is to introduce an alternative method for the analysis of stability problems, namely the well-known application of KEM. The main point is not only to optimize the iterative method to calculate the safety factor value, but also to put forward KEM’s assumed background and basic equations. With the help of a typical cliff section with complete recorded data on the Polish coast, the calculation results of KEM are compared with those of commonly used methods. For comparison purposes, four conventional methods based on circular sliding surfaces (Ferrenius, Bishop Riverbow, Morganston-Puries) were used. The geotechnical parameters used in the stability calculation were determined in advance by in-situ and laboratory tests. The comparison shows that KEM has obtained the same result and can be considered as a reliable alternative method with large application potential.