抄録
This study was conducted to investigate the effectiveness of a magnetorheological (MR) damper in the semi-active control of bridge response. Two algorithms to change the damping force according to displacement or velocity were investigated. It is found that the commanded damping force can be realized by the MR damper. However, discrepancy of damping force is observed, when the rate of change of the damping force is high. The shaking table test was conducted on a model bridge with the MR damper to investigate the effectiveness of the control algorithms.