Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집)

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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Evaluation of steel fiber reinforcement effect in segment lining by full scale bending test

실물파괴실험에 의한 세그먼트 라이닝의 강섬유 보강 효과 평가

  • Lee, Gyu-Phil (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Bae, Gyu-Jin (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Moon, Do-Young (Department of Civil Engineering, Kyungsung Univ.) ;
  • Kang, Tae-Sung (SAMPYO Construction & Engineering co. Ltd., R&D Department) ;
  • Chang, Soo-Ho (Geotechnical Engineering Research Division, Korea Institute of Construction Technology)
  • 이규필 (한국건설기술연구원 Geo-인프라연구실) ;
  • 배규진 (한국건설기술연구원 Geo-인프라연구실) ;
  • 문도영 (경성대학교 토목공학과) ;
  • 강태성 (삼표건설 연구개발팀) ;
  • 장수호 (한국건설기술연구원 Geo-인프라연구실)
  • Received : 2013.04.16
  • Accepted : 2013.05.04
  • Published : 2013.05.31
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Abstract

An experimental research on the possibility of using fiber reinforced concrete precast tunnel segments instead of traditional reinforced concrete(RC) segment has been performed in europe. This solution allows removing the traditional reinforcement with several advantages in terms of quality and cost reduction. Full-scale bending tests were carried out in order to compare the behaviour of the segments under flexural actions on both rebar reinforced concrete and rebar-fiber reinforced elements. The test results showed that the fiber reinforced concrete can substitute the traditional reinforcement; in particular the segment performance is improved by the fiber presence, mainly in terms of crack.

최근 유럽 및 일본에서는 강섬유 보강 콘크리트를 활용하여 철근을 생략하거나 최소화하기 위한 연구가 수행중에 있으며, 세그먼트 제작시 강섬유 보강 콘크리트 활용은 철근 생략 또는 최소화를 통한 경제성 향상은 물론 품질관리 향상효과가 있는 것으로 알려져 있다. 따라서 본 연구에서는 강섬유 보강효과 검토를 위하여 기존에 널리 활용되고 있는 철근만으로 보강된 세그먼트와 철근 및 강섬유로 보강된 세그먼트 실험체 제작 및 휨실험을 수행하였다. 실험결과 세그먼트 강섬유 보강은 콘크리트의 연성 증가효과로 인하여 균열제어는 물론 기존 세그먼트 보강재인 철근의 대체할 수 있는 보강재로 활용이 가능할 것으로 판단된다.

Keywords

References

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