A study on eccentric load acted on cut and cover tunnel by numerical approach

복개 터널구조물에 작용하는 편토압 고려를 위한 수치해석적 연구

  • 배규진 (한국건설기술연구원 지반연구부) ;
  • 정형식 (한양대학교 토목공학과) ;
  • 이규필 (한국건설기술연구원 지반연구부)
  • Published : 2003.09.01

Abstract

For environment-friendly construction, cut-and-cover tunnels have been constructed, thereby leading to embankment slopes with a number of steps. The slopes cause eccentric load on concrete lining of the tunnel. Nevertheless, uniform vertical and horizontal earth pressures, which are determined by considering a self-weight of embankment and $K_0$, are routinely used in structural calculation. Distribution of the earth pressures applied to the lining will lead to a biased calculation far from the actual behavior of the lining. In this study, basic study, therefore, was performed to consider the eccentric load properly in design and analysis of a cut-and-cover tunnel. A method capable of considering the eccentric load in design was proposed and its applicability was numerically examined through a number of examples.