ABSTRACT
It is satisfied with the Nuclear Regulation in Japan to estimate slope failures in case of a huge earthquake using an equivalent linear analysis. However, in term of the risk assessment and the accident management as an electric company, it is necessary to estimate which area of slopes collapses, and how much ground slides. Therefore, we compared the dynamic model tests using cut rock slope models with equivalent linear analysis and time-history nonlinear analysis from the viewpoint of reproducibility of the collapse behavior and the collapse area. As a result, the equivalent linear analysis proved to have a certain margin in the evaluation of the slip safety factor. However, the slip surface with the minimum slip safety factor did not coincide with the actual collapse range. On the other hand, time-history nonlinear analyses were able to reproduce the residual displacement of the slope model. Furthermore, the accumulation area of strain and the collapse range of the slope model generally agreed
