掲載雑誌（和）： 日本地震工学シンポジウム講演集 Vol： 7巻 年： 1986年 頁： 373-378頁 著者（和）： - タイトル（和）： - 抄録（和）：
- キーワード（和）： - 掲載雑誌（英）： PROCEEDINGS OF JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM 著者（英）： Tsuneo KATAYAMA, Nobuhiko SATO, Naoto OHBO, Masayuki KAWASAKI, Kimimasa SAITO タイトル（英）： GROUND SHAKING SEVERITY DETECTOR BY USE OF SPECTRUM INTENSITY (SI) 抄録（英）：
The concept and development of a new type of seismic ground motion severity detector (or sensor) are described. In addition to the peak ground acceleration often utilized for previous such sensors, the one proposed in this paper uses the spectrum Intensity (SI) to estimate whether or not ground shaking is strong enough to cause damage to structures. From the analyses of about 170 components of strong ground motion records, SI values were found to vary in a wide range even for the same level of peak accelerations. It was also found that the SI values of the records obtained at sites where damage was reported nearby are generally greater than 30 cm/s irrespective of the values of peak acceleration. Based on the results of these analyses, a new control unit for seismic ground motion severity sensor was designed and manufactured on a trial basis. The new sensor issues control signal by taking into account both SI value and peak acceleration. The authors believe that the proposed sensor is more reliable in that it can distinguish damaging ground motion from those simply having large peak accelerations. キーワード（英）： - 記事区分： - 区分 　　　委員会論文集