摩擦係数が速度依存性を持つ滑り支承によって支持された免震住宅の地震応答に関する研究

Abstract

The base isolated buildings with the sliding supports vibrate to repeat stick mode and sliding mode by the earthquake motion. It is necessary to estimate the time of mode's change exactly, therefore 4 time levels are provided on the numerical analysis, and those times are obtained with the accuracy to 0.01 × 10^<-3>sec. When the coefficient of sliding friction does not depend on velocity, maximum values of absolute response acceleration are small and agree with theoretical value. When the coefficient of sliding friction depends on velocity, the maximum values of absolute response acceleration increase and the maximum values of response displacement decrease with intensity of velocity dependence, and those two values are relatively sensitive to the velocity dependence.