P-FIT 궤도의 교량구간 자갈궤도 개량을 위한 차량-궤도 상호작용 해석

초록

P-FIT track is a track system developed so that it can be constructed 20m a day within the cut-off time in order to improve a ballast track into a concrete track to solve the inherent problems of a ballast track. This study investigates the dynamic stability of the P-FIT track in a bridge section through the train-track interaction analysis. At first, the number of elastic pads supporting the panel is determined, and then track supporting stiffness ratio in a transition section is calculated and modified by replacing the rail fastener of transition section in order to satisfy the relevant standard. At the end, the dynamic stability of the P-FIT track in a bridge section is validated.

키워드