Suggestion for the improvement of the field measurements on the shotcrete lining

터널 숏크리트 계측의 개선방안

  • 김학준 (대전대학교 지반설계정보공학과) ;
  • 박시현 (한국시설안전공단 일반도로팀) ;
  • 배규진 (한국건설기술연구원)
  • Received : 2010.02.17
  • Accepted : 2010.03.10
  • Published : 2010.03.31

Abstract

The field measurements on the shotcrete lining are usually performed during the tunnel construction. However, the credibility of the measurements is not certain because of the non-stress related strains occurring in the shotcrete, the uncertainty of the deformation modulus of the shotcrete, and the intrinsic difficulties involved in the strain measurements in the shotcrete. The problem related to the field measurements on the shotcrete is investigated using the review of the previous studies and the field measurement performed for this study. A method for the correction of stress measurements at the shotcrete lining, considering the non-stress related strains, is suggested using the literature review and the actual measurements obtained from the non-stress shotcretes. The deformation modulus used for the calculation of the stress acting on the shotcrete is also suggested.

Acknowledgement

Grant : IT 및 신소재를 활용한 급속 안정화 터널시공기술개발

Supported by : 한국건설교통기술평가원

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