토압 분리형 교대에 작용하는 수평토압 분석

As bridge and tunnel construction comprise a large proportion of railway construction, the importance oftransition zones has increased. In this study, a reinforced segmental retaining wall was constructed to separate abutmentand backfill. This was done by stacking up geosynthetic tubes. At the object field, the earth pressure acting on abutmentwas measured. Accordingly, the distributions of earth pressure and geotechnical properties were derived from the measuredearth pressure. The measured earth pressure and Rankine earth pressure showed a lot of differences, whereas themeasured earth pressure and silo earth pressure appeared similar because the lateral earth pressure decreases non-linearlywith depth. Therefore, the most similar to the measured lateral earth pressure distribution was derived by changingthe geotechnical properties to estimate the silo earth pressure. Using the derived results, the lateral earth pressure actingon a separated abutment is suggested, depending on the space between abutment and backfill.