Abstract
Earthquake observation has been performed for a base-isolated building built at the research institute for about 15 years from July, 1991 to the end of March, 2006. This research examined the earthquake response based on the observation record in case of the earthquake of the base-isolated building. Furthermore, the simulation of the observation result by numerical analysis is carried out, and it was shown that the behavior in case of the earthquake of the buildings can be pursued in analysis.