Study on Base isolation System using Air-Floating Technique

Abstract

Japan is one of the most earthquake-prone countries in the world, and recent experiences of major earthquakes have expanded the scope of application of seismic isolation systems, and there is a need for more sophisticated earthquake countermeasures. This study introduces an additional spring element to suppress locking vibration at the top of the air-floating unit based on the knowledge of air-floating technology that the authors have been developing, and summarizes the performance evaluation results from shaking table tests focusing on maintaining horizontal isolation performance under simultaneous vertical and horizontal inputs.