Abstract:
To study the vibration reduction of stopped vehicles on a bridge by tuned mass damper (TMD) to enhance the health and comfort of passengers. The vehicle vibration is induced from the bridge motion which is caused by the passages of vehicles in opposite traffic direction. In this study, the mathematical model of vehicle-bridge-TMD is formulated for evaluation of vehicle vibration under various bridge motions and for assessment of TMD effectiveness. The TMD with mass about 0.04 of bridge mass is installed beneath the bridge deck at mid-span. Based on the obtained results from computer simulations, the TMD seems to be effective for certain type of vehicles. Therefore, its application in an actual bridge might be limited. Considering the effect on human exposure to whole-body vibration as per the standard of ISO 2631-1, it reveals that, after installing the TMD, the passengers still percept the vibration in all considered cases but the vibration effect on passenger discomfort tends to be reduced. However, considering the vibration effect on passenger health, it is found that the TMD can prolong the time of vibration exposure to about 119% compared with the bridge without TMD.