콘크리트궤도에서 연약지반 판정 상관관계 연구

초록

Concrete track was applied to Gyeoungbu High Speed Railroad step 2 and Honam High Speed Railroad. Concrete track is higher construction cost and lower maintenance fee and run ability than the existing gravel track. For this reason, the use of a concrete track is increased in Korea. But, one of the biggest problems in the concrete track is settlement and reduction of concrete track stability. High speed railroad maintenance standards require the settlement that should be less than 30mm (instant subsidence 5mm, long term settlement 25mm). In Design Criteria, soft ground means that below 4~6 n-valued clay and below 10 n-valued sandy. The purpose of this study is to propose an appropriate criteria determined by the concrete track roadbed soft soil and settlement practices.