| 100 MPa급 고강도 콘크리트 기둥의 폭렬방지 및 하중지지력 향상방안에 관한 실험적 연구 |
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조범연, 김흥열, 김형준, 권인규, 김경옥 |
1한국건설기술연구원 화재안전연구센터
2한국건설기술연구원 화재안전연구센터
3한국건설기술연구원 화재안전연구센터
4강원대학교 소방방재학부
5목양엔지니어링건축사사무소 |
| Experimental Study for Improving Method of Load Bearing and Spalling Prevention of 100 MPa High Strength Concrete Column |
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Cho Bum-Yean, Kim Heung-Youl, Kim Hyung-Jun, Kwon In-Kyu, Kim Kyeong-Ok |
1Fire Research Center, Korea Institute of Construction Technology
2Fire Research Center, Korea Institute of Construction Technology
3Fire Research Center, Korea Institute of Construction Technology
4Dept. of Fire & Disaster Prevention, Kangwon National Univ.
5MokYang Architecture & Engineering |
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| 요약 |
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본 연구는 100 MPa급 고강도 콘크리트 기둥에 대하여 횡구속력 보강 및 내화보강 공법 적용 유무에 따른 내화성능을 평가하기 위하여 표준화재 재하조건에서 내화실험을 실시하였다. 실험결과, 띠철근을 적용한 실험체의 경우 43분의 내화성능을 만족하여 내화구조로써 적용할 수 없는 것으로 나타났으며, 동일체적비로 띠철근을 대체한 와이어로프를 적용할 경우 별도의 내화처리 없이 69분의 내화성능을 만족하여 4층 이하 건물에 적용할 수 있는 것으로 나타났다. 또한 띠철근을 대체한 와이어로프 및 폭렬방지를 위한 Fiber-Cocktail 혼입공법을 혼합 적용 할 경우 180분의 내화성능을 만족하여 12층 초과 건물에 적용할 수 있는 것으로 나타났다. |
| Abstract |
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In this study, we have conducted a fire resistance experiment under loading condition on standard fire to evaluate the fire resistance performance according to applying reinforcement of methods for reinforcing the lateral confinement of reinforced bars (Wire Rope) and fire resistance reinforcement (Fiber-Cocktail) for 100 MPa high strength concrete column. In the result of the experiment, in case of the test objects applied by hoop, it has been shown as not possible to be applied as the fire resistance structure after satisfying the fire resistance performance for 43 minutes. In case of applying the wire rope as lateral confinement of reinforced bar, instead of hoop in identical volume ratio, it has been shown as possible to apply it to the buildings with under 4 floors after satisfying the fire resistance performance fro 69 minutes with any separate fire resistance process. Also, in case of applying with mixing wire rope method, instead of hoop, and Fiber-Cocktail mix method to prevent spall, it has been shown as possible to apply to the buildings with over 12 floors after satisfying the fire resistance performance for 180 minutes. |
| Key Words:
Wire rope, Fire resistance, High strength concrete, Column, Fiber-Cocktail |
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