Analysis on the Field Measurements with the Construction of Cut and Cover Tunnel

복개 터널구조물의 현장 시공에 따른 계측 분석 사례

  • 이석원 (한국건설기술연구원 지반연구부) ;
  • 박시현 (한국시설안전기술공단) ;
  • 최순욱 (한국건설기술연구원지반연구부) ;
  • 배규진 (한국건설기술연구원지반연구부)
  • Published : 2003.04.01

Abstract

Field measurements were carried out in this study to investigate the behavior of cut and cover tunnel such as the distribution and the magnitude of the earth pressure during back fill process. Three kinds of measuring instruments, such as the earth pressure load cell, the concrete strain gauge and the reinforcing bar meter of embedded type in concrete structure were installed and measured. Earth pressure load cells measured the outside forces acting on the tunnel lining with radial directions. Three load cells were installed at the crown, the right and the left shoulder of the tunnel, respectively. Three sets of reinforcing bar meter were installed in the double reinforcements of the tunnel lining and their locations were the same with the position of the earth pressure load cells. Concrete strain gauge was installed only one site of the upper compressive part at the tunnel crown. Based on the measurements, the deformation and the earth pressure acting on the tunnel lining were investigated with the back fill process. Considerations on the validity of the field measurements were paid.

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