(1 Department of Civil Engineering,Logistic Engineering University,Chongqing 400041 China) (2 Chongqing University of Architecture,Chongqing 400045 China)
Abstract Based on the assumption of straight slip surface,a general expression of safety factor for step-shaped slope is deduced by using the traditional concept of safety factor. Since the deduced expression is analytical equation that is simple and easy to use,the effect of analysis and design of slope stability is improved .