Proposal of Train Operation Control during Earthquakes in Consideration of Vibration Characteristics of Subsurface Ground and Structure

Abstract

Train operation control during earthquakes is based on the intensity of ground motions observed by seismometers which are installed at a certain interval. To improve the stability of running trains, it is important to consider not only the ground motions but also the structural responses along railway lines. In this study, we observed seismic and microtremor motions at a target railway section to investigate vibration characteristics of both the subsurface ground and the structures performing. Examining the observed data, we propose the method to consider both characteristics and conclude the method is useful to make the train control more appropriate.