프리캐스트 슬래브 궤도 시스템의 충전층 충전불량이 궤도구물의 구조적 안전성에 미치는 영향

The effect of the poor infilling of the underpouring in precast slab track system on structural behavior

It has been proved that precast slab track has advantage of rapid construction speed and good quality compared to in-situ concrete slab track. A korean precast slab track, which is named as a K-PST, was developed and had been installed on the embankment and explored on the air. The developed track system consists of precast track panel and underpouring layer which is made of cement-asphalt mortar. Consequently, poor filling of underpouring layer directly could affect on the long-term performance of the track system. As a preliminary study, the effect of the poor infilling of the underpouring in precasst slab track system on structural behavior was investigated through FEM analysis.