Koh, Taehoon, Hwang, Seonkeun, Jung, Hunchul and Jung, Hyuksang
International Journal of Railway, vol. 6, no. 3, pp.107-111, 2013

Abstract : In order to constrain the railway roadbed settlement which causes track irregularity, and thus threats running stability and ride quality, advanced Back-to-Back (BTB) reinforced retaining wall was numerically analyzed as railway roadbed structure. This study is intended to improve conventional Back-to-Back reinforced retaining wall as the technology which would reduce the roadbed settlement in a way of constraining the lateral displacement of its prestressed vertical facing and inducing arching effects in roadbed (backfill) placed between masonry diaphragm wall and vertical facing. As a result of numerical analysis, it was found that the roadbed settlement was reduced by 10% due to the prestressed vertical facing and embedded masonry diaphragm wall of the advanced Back-to-Back reinforced retaining wall system.

Keyword : Back-to-Back (BTB) reinforced retaining wall, Prestressing effects, Roadbed settlement, Arching effects