Model experiments of active control for traffic-induced vibration of girder bridge

摘要

Regarding traffic-induced vibration of girder bridges,authors have examined effectiveness of a hybrid control ssytem combining merits of passive and active type.Recently,a performance of AC servomotor for an active control system ahs bene improved.Then,in this study an active control system is newly develped.Model experiments on forced vibratin of a girder to a moving vehicle are carried out under conditions of various moving speeds.Dynamic response is estimated in terms of r.m.s.The active control system is effective compared iwht the hybrid control systme even though control force of active control is smaller than that of hybrid control.