Design and construction of reinforced retaining wall in the railway of Korea

초록

Reinforced retaining wall for railways has been designed and constructed near Jupo station in Korea. Its purpose is to reinforce failed railway embankment slope and to increase line capacity. Reinforced retaining wall could make double the line capacity without additional land. This could be realized using short reinforcement (35%H, half level of current specification) and rigid wall. The use of short reinforcement makes it possible to construct in small space and to decrease footing costs. Another advantage is to minimize residual settlement with special procedures to construct wall after backfill. The reinforced retaining wall could be highly applicable, such as concrete slab track ruled by rigorous standards for residual settlement and difficult to maintain while opening to traffic. In this study, we revised overseas GRS to upgrade applicability in Korea focused on cutting down construction cost and period to 25~30% without losing safety.