교량상 도상궤도의 종저항 거동에 대한 목업 실험

When a ballast track of high-speed train on bridges, displacements of bridge decks did not fixed against to a the rails, besides, relative displacements between bridges and rails were caused by temperatures and external loads. On the other hand, current calculation methods for longitudinal resistance of tracks on bridge were identical to the cases for ballast track over roadbeds. In this study, therefore, a mock-up test specimens, simulated the deck-ballast track system, were fabricated, and the longitudinal resistances were measured, also, behaviors of track system by wheel loads were assessed.