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http://dx.doi.org/10.9798/KOSHAM.2011.11.2.001

Experimental Study on the Fire Resistance of Concrete Filled Steel Tubes according to Concrete Compressive Strengths  

Kwon, In-Kyu (강원대학교 소방방재공학)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.11, no.2, 2011 , pp. 1-8 More about this Journal
Abstract
Concrete filled steel tubes(CFST) is considered as a column having better structural stability and better performance of fire resistance than that made with H-section and hollow section in itself. To get the fire resistance of the CFST, two kinds of concrete strength were used, 21 MPa, 40 MPa and 4 sorts of the applied loads were calculated and used to the specimens such as 3.5 m long, round and rectangular section. After various fire tests under 4 sorts of load ratios, the fire resistance of the CFST is not possible to get over 1 hour because of the rapid decrease of concrete strength. The below 50% of the applied load is recommended to obtain over 1 hour fire resistance of the CFST.
Keywords
Fire resistance; Fire test; CFST; Load ratio;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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