An analytical solution to slip buckling slope failure triggered by earthquake

Slip buckling failure often occurs in slopes intersected by a set of discontinuities with approximately parallel to the surface. Post-earthquake investigations indicate that some slip buckling failures occurred during 2008 Wenchuan event. However, it is still difficult to evaluate the slip buckling failure triggered by earthquakes. In this paper, we give a thorough mechanical analysis to slip buckling slope, and present an analytical solution on slip buckling slope failure which fully considers both the effect of earthquake and pore water pressure based on energy equilibrium theory. Then we apply the methodology to Tangjiashan landslide. Comprehensive retrospective study indicates that Tangjiashan landslide is a typical buckling failure case triggered by Wenchuan earthquake. The application shows that the analytical solution can be used to evaluate the stability of the slope with potential buckling failure during earthquake.