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An Experimental Study on the Temperature Distribution of Square CFT Columns According to the Types of Fire Protection  

Kim, Hae-Soo (부산대학교 건축공학과)
Lee, Chy-Hyoung (부산대학교 생산기술연구소)
Publication Information
Journal of Korean Society of Steel Construction / v.22, no.6, 2010 , pp. 523-532 More about this Journal
Abstract
Concrete-filled square steel tube (CFT) columns have inherently high fire resistance and load-bearing capacity. Nevertheless, it is sometimes necessary to improve their fire resistance using external fire protection. This paper presents the experimental results of the temperature distribution of CFT columns with fire protection. A fire load test was carried out by exposing small-scale specimens to heat in an electric furnace that was especially built for testing loaded columns. The temperature distribution of CFT columns under constant axial loads was determined, as were its significant parameters, such as the types of fire protection and thickness, the thickness of the square CFT, and the fire duration times. The results of this study showed the temperature distribution of each specimen of the electric furnace and the temperature distribution properties of concrete and steel. In addition, the axial displacement and local buckling behavior of CFT columns based on temperature changes was observed.
Keywords
concrete filled square steel tube column; fire protection; temperature distribution; fire load test;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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