2011年東北地方太平洋沖地震で発生した地震動と建物被害の対応性:－建物の大きな被害をより正確に推定する地震動強さ指標－  [in Japanese] CORRESPONDENCE OF STRONG GROUND MOTIONS AND DAMAGE TO HOUSES AND BUILDINGS IN THE 2011 TOHOKU-CHIHO TAIHEIYO-OKI EARTHQUAKE:-Seismic intensity measure to evaluate heavy structural damage to houses and buildings more accurately-  [in Japanese]

We investigated the correspondence of strong ground motions and damage to houses and buildings in the 2011 Tohoku-Chiho Taiheiyo-oki earthquake. Structural damage by shaking was very small according to the investigation around strong ground motion observation sites. This was because a very short period of below 0.5 second dominated in strong ground motions, therefore, 1-2 second responses which correlated with severe damage to houses and buildings were very small. We proposed seismic intensity measure to evaluate actual structural damage more accurately by using equivalent period and damping. and simple seismic intensity measure based on the investigation.