ABSTRACT
In this study, the effects of the rolling vibration of the track on the running safety of railway vehicles against the earthquakes are investigated. During the earthquakes, the top of the viaducts sways in the roll direction in addition to the lateral and the vertical directions. The behavior of railway vehicles running on the track with lateral and rolling vibrations is numerically calculated using a Vehicle Dynamics Simulator (VDS) which can calculate the effect of dynamic rail tilting. According to the sinusoidal oscillation analysis, it is shown that the running safety of railway vehicles decreases with the increase of the rolling vibration amplitude of the track. In addition, it is verified that the roll vibration of the track in the case of the rigid-frame viaduct decreases the running safety of the vehicle against the earthquake more than in the case of the pier type viaduct.
