Fire Science and Engineering (한국화재소방학회논문지)

Korean Institute of Fire Science and Engineering (한국화재소방학회)
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A Study on the Fire Resistance Performance Concerning Types of Fire Protection Method and Load Ratio of High Strength Concrete Column Using The Wire Rope

와이어로프를 적용한 고강도 철근콘크리트 기둥의 내화공법 및 하중비에 따른 내화성능에 관한 연구

  • Cho, Bum-Yean (Fire Research Center, Korea Institute of Construction Technology) ;
  • Yeo, In-Hwan (Fire Research Center, Korea Institute of Construction Technology) ;
  • Kim, Heung-Youl (Fire Research Center, Korea Institute of Construction Technology) ;
  • Kim, Hyung-Jun (Fire Research Center, Korea Institute of Construction Technology) ;
  • Kwon, In-Kyu (Dept. of Fire & Disaster Prevention, Kangwon National Univ.)
  • 조범연 (한국건설기술연구원 화재안전연구센터) ;
  • 여인환 (한국건설기술연구원 화재안전연구센터) ;
  • 김흥열 (한국건설기술연구원 화재안전연구센터) ;
  • 김형준 (한국건설기술연구원 화재안전연구센터) ;
  • 권인규 (강원대학교 소방방재학부)
  • Received : 2012.10.18
  • Accepted : 2012.12.07
  • Published : 2012.12.31
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Abstract

The fire resistance test has been conducted under the standard fire & loading conditions to evaluate fire resistance performance, according to applying to methods of the lateral confinement reinforcement by prestressed Wire Rope and fire resistance reinforcement by Fiber-Cocktail and load ratio for high strength concrete column. The test result, for 60 MPa high-strength concrete column, It was indicated that applying to the wire rope has improved axial ductility in the fire condition, and fire resistance performance has been enhanced by more than 23 %. In addition to this, in case of applying the wire rope to 60 MPa high-strength concrete column, load can be judged that about 70 % of designed load is appropriate. If the Wire Rope and Fiber-Cocktail is applied to 100 MPa high-strength concrete column, It was shown that the fire resistance performance was enhanced by 4 times as much as applying only hoops.

60 MPa급, 100 MPa급 고강도 철근콘크리트 기둥에 대하여 횡구속력 보강공법(와이어로프)과 내화보강공법(Fiber-Cocktail) 적용 유무 및 하중비에 따른 내화성능을 평가하기 위하여 표준화재 재하조건에 내화실험을 실시하였다. 실험결과 60 MPa급 고강도 콘크리트 기둥의 경우 와이어로프를 적용함으로써 화재시 축방향의 연성이 향상되며, 내화성능은 23 % 이상 향상되는 것으로 나타났다. 또한 와이어로프를 적용할 경우 하중은 설계하중의 70 % 수준이 적정하다고 판단된다. 100MPa급 고강도 콘크리트 기둥에 와이어로프와 Fiber-Cocktail을 적용할 경우 띠철근만을 적용한 경우보다 내화성능이 4배 이상 향상되는 것으로 나타났으며, 100MPa급 고강도 콘크리트 기둥에 내화성능을 확보하기 위해서는 하중은 설계하중의 70 % 미만으로 설정하는 것이 적정하다고 판단된다.

Keywords

References

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