PREDICTION OF GROUND VIBRATION DURING THE PASSAGE OF TILTING TRAIN THROUGH THE IMPROVED TURNOUT SYSEM

초록

A turnout system which permits trains to pass from one track to another is a complex system which consists of the switch, the crossing, lead rails which are necessary to connect the switch and the crossing, two guard rails, and a switch machine for operating the switch. A turnout is the sole moving part among the railway components and has complex configuration, so the safety has always been raised an issue. In Korea, it has been planned to apply high speed tilting train, which operates at the maximum speed of 200km/h, to conventional lines by the year of 2010. However, for the application of the tilting train to conventional lines, it is prerequisite to establish a stable turnout system allowing the tilting train to pass through it without reducing speed. Therefore, the improved turnout system for the speed-up of conventional lines has been developed and the prototype of the turnout system has been constructed. However, levels of impact-induced ground vibrations from the discontinuous part of the turnout system have not been clarified. In this study, modeling of ground vibration around the improved turnout system is performed in order to predict the generation level of ground vibration due to the passage of the tilting train through the improved turnout system.