EVALUATION OF TRACK PERFORMANCE WHILE ACCELERATING ON EXISTING CURVE SECTION (R500)

초록

A tilting train which has been in trial operation on existing railway is able to run faster than existing trains from the curve line depending on the status of approximately 10-30% is possible while running the curve section. However the train is affected by increasing centrifugal force at curved section which is conveyed to the wheel and rail, resulting in increased lateral pressure on outer side and derailment coefficient, while wheel unloading tends to increase on inner side, Curve Track ballast is needed for a quantitative review. Thus in this study, it proposed to establish the criteria of allowable limit in wheel load, lateral pressure and derailment coefficient to ensure the tilting train in trial operation will run the curve section (R500) safely as well as to evaluate the bearing force of the track and the operational stability on curve section, by operation speed and kind, in preparation for launching revenue operation of tilting train so as to quantitatively assess the wheel load and lateral pressure, and wheel unloading and derailment coefficient were developed for comparing with the reference, thereby determining the operational stability of the tilting train.