A study on behavioral characteristics of concrete lining based on the equations of relaxed rock loads

이완하중 산정식에 따른 콘크리트라이닝 거동특성에 관한 연구

  • 김상환 (호서대학교 토목공학과) ;
  • 박인준 (한서대학교 토목공학과) ;
  • 문훈기 ((주) 용마엔지니어링 터널부) ;
  • 신용석 (한국시설안전공단 진단계획팀)
  • Received : 2010.10.15
  • Accepted : 2010.11.10
  • Published : 2010.11.30


A concrete lining of NATM tunnel had been considered as interior materials. But recently we consider it as structural materials. Therefore we must consider various loads. Relaxed rock load is a main load which decides thickness and reinforcement presence of concrete lining. In practice conservatively, Terzaghi's rock load theory has been accepted to estimate relaxed rock loads in urban subway tunnel design. This study investigates the equations of relaxed rock loads used in the design of NATM concrete lining. Structural analysis are executed based on various equations of relaxed rock loads, and concrete lining forces are compared.


Supported by : 한국건설교통기술평가원


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