궤도변위계측을 통한 신축이음장치 상태 적정성 평가

초록

The Continuous Welded Rail has been driven forward for an improved driving safety and ride quality of train. The Continuous Welded Rail can be installed in theory without limit, but it is in reality adjusted with an expansion joint being installed at a certain section by considering the project factors like an axial force of rail under a temperature change, Creepage State driven by a running train and an intervention of bridge structures. This study is to have an appropriate test of the status of the expansion joint of Continuous Welded Rail installed at 410 places at Line No.1~4, Seoul metro through a field investigation and track displacement measurement analysis, leading to increase the efficiency of a track-maintenance repair and to have an improved driving safety and riding comfort of train.