Semi-active control for seismic isolation device using acceleration response spectrum derived from seismic motion observed at the nearest monitoring station

Abstract

In recent years, semi-active control has been attracting attention as a control method for seismic isolation devices from the viewpoint of safety and energy consumption, but most of them use sensors on the seismic isolation devices to switch attenuation, so it is caused by an earthquake. It is difficult to deal with the beginning of shaking. Therefore, in this study, we proposed a semi-active control method that switches the damping of the variable damping damper using the acceleration response spectrum calculated from the seismic motion data at nearby stations. As a result, it was shown that not only can we expect the response to the beginning of the Earthquake shaking, which was difficult to respond to until now, but also the maximum response and the convergence time of the Earthquake shaking can be improved by predicting and controlling the response from the seismic motion before arrival.