Abstract
After the Great Hanshin-Awaji Earthquake Disaster, the importance of a dynamic analysi has been increased in the design of structures. It is likelihood that results of dynamic analysis depend on input waves. So we should evaluate the dynamic response of structure by many-sided approaches with a large number of seismic waves. In this study, we present an integrated system for dynamic analysis of structures with user-friendly GUI. With this system, we can easily repeat the dynamic analysis and obtain probabilistic performances of structures.