궤도틀림 검측결과의 유지보수 활용

초록

Track geometry changes by traffic loads. The bigger the changes are, the worse the riding comfort and running stability of train. This is so-called track irregularity and is the most important quality parameters of ballasted track. To objectively assess track irregularity, track geometry should be able to be measured. Practically, railway companies use moving chord method, which determine versine values via a chord. The versine is vertical distance to curve measured in the middle of the chord. In this report, reviewed conventional methods for track maintenance using output data of EM-120 track recording car categorized with by single failure, quality index and progress rate. And briefly reviewed technical background of track maintenance threshold and TQI(Track Quality Index) for track irregularity. For the last, proposed effective way of using track irregularity data for track maintenance.