Behavior of arch slab in the shallow tunnel constructed perpendicular to slope by semi-cut-and-cover method

편경사지에 굴착한 반개착식 천층터널에서 아치슬래브의 거동

  • 양재원 ((주)도담이앤씨 지반터널부) ;
  • 이상덕 (아주대학교 환경건설교통공학부)
  • Received : 2010.02.12
  • Accepted : 2010.03.19
  • Published : 2010.03.31

Abstract

Recently, the number of shallow tunnel construction increases to improve the structural safety and environment-friendliness. In semi-cut-and-cover Method, ground is excavated to the crown arch level and arch slab is set to backfill before the excavation of lower face. In this study, laboratory model tests was performed to clarify the behavior of the arch slab constructed perpendicular to the slope. Results show that Arch slab is affected by perpendicular to the slope and bedrocks. Negative moment at the upper part of the arch slab at hillside and positive moment at the upper part at the other side are generated as perpendicular to the slope increases. Reaction load at the hillside support was larger than that at the other side.

References

  1. 안정환, 이상덕 (2009), "반개착식으로 굴착한 천층터널에서 Braced Rib Arch의 거동", 터널기술, 한국터널공학회 논문집, 제11권, 제4호, pp. 419-425.
  2. 양문상, 이사덕 (2000), "수평 아치형 터널 갱구부 비탈면의 역학적 거동", 터널기술, 한국터널공학회 논문집, 제2권, 제2호, pp. 50-61.
  3. 황재홍 (2009), "프리캐스트 아치형 개착식 터널의 역학적 거동에 관한 수치해석", 터널기술, 한국터널공학회 논문집, 제11권, 제3호, pp. 315-325.