Abstract
The Morgenstern-Price and Spencer methods are often applied to the slope stability analysis of noncircular slip surfaces. Both of them satisfy the statically determinate parameters and the equilibrium conditions of forces and moments on the each slice. In this paper, the authors show the outline of the Morgenstern-Price and Spencer methods and compare both of the equilibrium formulas of a force and a moment. By this comparison, we point out that Spencer method is equivalent to Morgenstern-Price method using the approximate moment formula for convergence calculation. The authors also clear up the differences of these methods from the analytical results of the model slope. As the statics formulas of these methods have a generality, it is possible to analyze using an interslice force assumption, which is similar to Janbu's.
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