사질토 원지반 조건에 따른 노반 침하 영향 사례 연구

The concrete track of high-speed rail compared to the other transportation infra-structures, such as roads and ballasted track , settlement should be managed very strictly. For design high-speed railway roadbed in on soft ground determined clay or organic soil, because of settlement of foundations can be proceeding after opening of high-speed railway, reinforcement of soft ground is requied. But the sandy soil can be untreated if ensured strength required. The the soft ground criteria of sandy soil shall apply the same standards on designing concrete track, ballast tracks, as if the N value is less than or equal. However, because strictly limited to the settlement of a concrete track, road, ballast track and ballastless track on the application of the same criteria. Therefore in this paper through data such as settlement and the geotechnical investigation, review the applicability criteria.