Dynamic Responses of Three-Dimensional Entity Slope under Earthquake

In order to investigate the distribution rules of acceleration, speed and displacement (short for three parameters) responses of a slope subjected to an earthquake, a 3D model for an ideal slope was established based on the Lagrangian finite difference method. Effects of slope form on the distributions of the three parameters were analyzed by introducing the concepts of amplification coefficients of the three parameters and drawing corresponding contour graphs, and were verified by the 3D model for an actual slope. The research results indicate that to a slope with a medium and certain height, its three parameters increase with the increase of slope height, and their amplification coefficients increase also. The distributions of the three parameters are related to the slope form, the amplification coefficients of the three parameters are maximum at concave and convex parts of the slope. And the more intense the degrees of the concave and convex parts are, the more obvious the amplification effect is. Furthermore, the amplification effect of a convex slope is stronger than that of a concave slope as a whole.