DYNAMIC CHARACTERISTICS OF A GYMNASIUM BEFORE AND AFTER THE 2011 OFF THE PACIFIC COAST OF TOHOKU EARTHQUAKE

Abstract

This paper presents dynamic characteristics of a gymnasium determined from recorded strong-motion response data and from microtremor tests. The results show that the fundamental periods and corresponding percentages of critical damping before the 2011 off the Pacific coast of Tohoku Earthquake changed significantly after the severe Tohoku Earthquake. The data set collected during this study contributes to the evaluation of dynamic characteristics of large space structures.