OBSERVATION RECORDS OF BASE-ISOLATED BUILDINGS IN STRONG MOTION AREA DURING THE 2011 OFF THE PACIFIC COAST OF TOHOKU EARTHQUAKE

1 Research Engineer, Technical Research Institute, Obayashi Corporation, Tokyo, Japan, miwada.goro@obayashi.co.jp 2 D.Sc., Technical Research Institute, Obayashi Corporation, Tokyo, Japan, yoshida.osamu@obayashi.co.jp 3 Dr. Eng., Technical Research Institute, Obayashi Corporation, Tokyo, Japan, ishikawa.ritsuko@obayashi.co.jp 4 Dr. Eng., Technical Research Institute, Obayashi Corporation, Tokyo, Japan, nakamura.mitsuru@obayashi.co.jp