수치해석을 통한 궤도 동적 거동에 대한 뜬침목 영향 분석

Unsupported sleepers are frequently occurred according to use the rail great rigidity as increasing of passing tonnage, these days. Especially, the phenomenon of unsupported sleeper in the high-speed track makes the state of track materials(rail, sleeper, fastener and gravels, etc.) deteriorated because track irregularities arise from the exceedingly impact loading. In this paper, dynamic behavior of the track which happened unsupported track is studied through numerical analysis case by gap and location distance of unsupported sleepers. In this study, the dynamic behavior of track is analyzed by parameters the distance of hanging sleepers and its gap from the train speed.