PERFORMANCE OF SEISMICALLY ISOLATED BUILDINGS IN THE 2011 OFF THE PACIFIC COAST OF TOHOKU EARTHQUAKE BASED ON DATA OF PUBLISHED REFERENCE

Abstract

Based on published reports, data of 65 of seismically isolated buildings about design information and earthquake observation results were collected in the 2011 off the Pacific coast of Tohoku Earthquake. Performance of seismically isolated buildings was investigated. Earthquake motions, responses of accelerations were in the range of 6-756cm/s². The acceleration responses of superstructures were at most 250cm/s². The maximum displacement responses of isolator were about 24cm. Cumulative displacements were 100 times as large as maximum displacements.