Upper Bound Stability Analysis for Soil Slope with Non-Associated Flow Rule

The non-associated flow rule was introduced by means of modification shear strength parameters and a kinematically admissible velocity field was considered for slope stability analysis. The effectiveness and validity of the analysis method in this paper was illuminated through a case study. Comparative analysis has shown that the proposed method gives better calculation results. The results show that the consideration of parameters of non-associated flow rule plays a remarkable role on the slope stability. Therefore, the presumption that geomaterials subject to associated flow rule takes disadvantageous influence on evaluating the real stability characteristics of slope.