Abstract
The objective of this paper is to investigate the applicability of the current static seismic analysis methods to the level 2 earthquake motion. For this purpose, we conducted the numerical analyses using dynamic FEM, static FEM and seismic deformation method, considering the nonlinearity of structures and contact surfaces between structure and soil, and then evaluated the ductility of the structures. As the results, in the case of considering the nonlinearity of the structures, we clarified that both of the ductilities by the static FEM and the seismic deformation method were in good agreements with those by the dynamic FEM quantitatively. On the other hand, in the case of considering both the nonlinearity of the structures and the contact surfaces, the less ductility by the seismic deformation method was obtained than that by the dynamic FEM and the static FEM due to the use of Winkler type spring.
