Improved Sliding Surface Search Method for Stability Analysis of Complex Slopes

This article addressed an improved method of using random angle to generate random sliding surface. The search for two-dimensional random sliding surface was simplified into the search for the approximate curves generated by combination of delineation of different angles and vertical soil slices. Based on the searching method of a single curve sliding surface, a new method of generating random three-dimensional sliding surface by the generatrix and the directrix was proposed. The method of this article can be applied to stability analysis of two-dimensional and three-dimensional slopes. Comparison of different methods demonstrated the effectiveness of the method, and it is significant to research the random sliding surface without the assumptions of forms of sliding surface.