지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.7
- 수록면
- 159 - 166 (8page)
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초록· 키워드
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Recently, it increases in use of CFT(Concrete filled steel tube, below CFT) because it an excellent internal force and deformation capacity. But, CFT column lose bearing capacity when steel tube is exposed under fire. In case of the Europe, Japan and America, it have been studied the fire-resistance performance of CFT to use actual specimen. Fire resistance performance of CFT column is determined to internal concrete at fire. Therefore, it is able to evaluate mechanical properties at elevated temperature though specimen reduce the scale.
In this study, it is experimentally investigated in effects to use CFT Stub Column at elevated temperature. This study is aimed to study the effect of elevated temperatures ranging from 20 to 700℃ on mechanical properties of concrete according to strength of concrete and fiber mixing. Tests were conducted with □75×75×H200 ㎜ CFT Stub Column and Ø100×200 ㎜ cylinder specimens, which compared to that observed at 20℃.
As a result, compressive strength decreased at 100℃, rose again at 200～300℃ and decreased over 300℃. But elastic modulus is decreased continually, and there were deferent as intended compressive strength at elevated temperature. Failure mode shows local buckling at a third of length.
In this study, it is experimentally investigated in effects to use CFT Stub Column at elevated temperature. This study is aimed to study the effect of elevated temperatures ranging from 20 to 700℃ on mechanical properties of concrete according to strength of concrete and fiber mixing. Tests were conducted with □75×75×H200 ㎜ CFT Stub Column and Ø100×200 ㎜ cylinder specimens, which compared to that observed at 20℃.
As a result, compressive strength decreased at 100℃, rose again at 200～300℃ and decreased over 300℃. But elastic modulus is decreased continually, and there were deferent as intended compressive strength at elevated temperature. Failure mode shows local buckling at a third of length.
목차
Abstract
1. 서론
2. 실험계획 및 방법
3. 실험결과 및 고찰
4. 결론
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