高性能オイルダンパーの開発と適用事例による地震応答解析結果の比較

抄録

This paper presents an overview of two newly developed high-performance oil dampers. The first is a semi-active oil damper, which is designed to improve living conditions during small to medium earthquakes by efficiently absorbing energy through instant switching of the damping coefficient via electrical signals. The second is an oil damper equipped with a self-returning trigger mechanism. This device is designed to control excessive deformation of the base isolation layer during large earthquakes by having a non-damping region, thereby only exhibiting damping performance during such events.
Seismic response analysis was conducted using application cases of these two high-performance oil dampers. The results confirmed that their application reduced the maximum response acceleration by 8% for Level 1 seismic motion, the maximum response layer shear coefficient by 6% for Level 2 seismic motion, and the maximum response displacement of the base isolation layer by 4% for Level 3 seismic motion.