Abstract
The dynamic elasto-plastic FEM is applied to analyse the difference of the behaviors of 2D and 3D slopes (end effects) during earthquakes. Simple homogeneous slopes are assumed to be subject to various simulated sine waves and two real earthquake motions. It is shown that the response of acceleration of slopes during earthquakes is reduced due to sliding, and the end effect gives much more influence on the slope stability in the dynamic case than in the static case.