The study on the bearing capacity and settlement of a foundation placed over a tunnel

Tunnel 상부지반의 기초 지지력과 침하에 관한 연구

  • 김수삼 (중앙대학교 건설환경공학과) ;
  • 정승용 (지구환경전문그) ;
  • 김용수 (중앙대학교 대학원 토목공학) ;
  • 권태창 (벽산엔지니어링(주))
  • Published : 1999.12.01


When a foundation on the ground with tunnel is constructed, the ultimate bearing capacity of a footing is reduced by tunnel. In practice, structure may bate a considerable damage because of large settlement. This study shows that the settlement which is caused by variety of the ultimated bearing capacity leads fatal damages to the footing above tunnel. Therefore, it is necessary to study on the reduction both of the ultimate bearing capacity which leads a failure and of tolerable settlement which satisfies the safety of the building. For this reason, the variety of ultimated bearing capacity was analyzed using tub-dimensional elasto-plastic finite difference method in this paper. As a result, bearing capacity of the foundation above tunnel should be determined after establishing limit of allowable settlement and considering reduction-ratio of bearing capacity.