Study on rail corrugation in sharp curves of commuter line

This paper presents study on short-wave rail corrugation on the sharp curve in commuter lines. It becomes a serious problem because it causes not only large noise, but also violent wheel vibration of that may damage the rail and the track sleeper. It is necessary to renewal of rail and rail re-profiling. These countermeasures need large cost. From these backgrounds, a project started to examine the mechanism of rail corrugation on commuter line. It is important to consider the possible cause from both the viewpoints of vehicle and track. In this project, both the measurements on vehicle and rail were carried out. In this paper, observation results of corrugation and measurement on vehicle running tests were shown. From these facts the mechanism of corrugation and countermeasure are discussed.