Numerical Simulation of the Seismic Damage of Daikai Station Based on Pushover Analyses

Numerical analysis is an important method for the study of seismic performance underground structures. Current research on damage Daikai station and subway tunnel during Great Hanshin earthquake mainly focuses dynamic time-history analysis. However, modeling process complicated shows characteristics enormous calculation amount, long running time low computation efficiency. This paper briefly introduces phenomena earthquake. The internal forces under horizontal vertical bi-directional effects are obtained by simplified pushover analyses columns carried out to obtain curves different pressures considering various loading restraint conditions. Finally, soil-structure system reproduce effects. results show that computed similar actual damage. method, which considers both inertia soil, can be used simulate collapse mechanism at station. Compared with analysis, efficiency significantly higher; it therefore suggested use in stations.