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Fire Resistance of Concrete Filled Double Skin Tubular Columns under Axial Load  

Chung, Sang-Keun (서울시립대학교 구조연구실)
Kim, Sun-Hee (서울시립대학교 구조연구실)
Lee, Seong-Hui (서울시립대학교, (주)티섹구조엔지니어링)
Choi, Sung-Mo (서울시립대학교 건축학부)
Publication Information
Journal of Korean Society of Steel Construction / v.23, no.1, 2011 , pp. 51-59 More about this Journal
Abstract
Although an uncoated CFT column with a high axial-force ratio can be used to secure fire resistance for two hours or less in low-rise buildings, it does not satisfy the three-hour-long fire resistance required in high-rise buildings. Accordingly, so that the uncoated CFT column could be used for high-rise buildings, additional measures for the improvement of its fire resistance should be proposed. In this regard, the use of a Double CFT column as a measure for improving the fire resistance of the uncoated CFT column was proposed in this paper. A fire resistance test was conducted on an uncoated CFT column and a Double CFT column in real scale, under a load. Through such test, the effect of the Double CFT column on fire resistance was evaluated and then compared with that of a variant shape of the cross-section of a steel column.
Keywords
Double Concrete Filled Tube column; fire resistance; fire resistance test under a load; real scale; cross-section;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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