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http://dx.doi.org/10.11004/kosacs.2015.6.2.023

P-M Relations of Slender Welded Built-up Square CFT Column under Eccentric Loads  

Lee, Seong-Hui (Office Equipment Examination Division, Korean Intellectural Property Office)
Choi, Sung-Mo (Department of Architectural Engineering, University of Seoul)
Kim, Young-Ho (Jiseung Consultant Co., Ltd.)
Publication Information
Journal of the Korean Society for Advanced Composite Structures / v.6, no.2, 2015 , pp. 23-31 More about this Journal
Abstract
CFST columns are structurally superior because the concrete inside the steel tubes prevents local buckling at the tubes and the tubes confine the concrete. And, the thickness of steel tube in CFST column has been thinner with development of high-strengh steel. The thinner the steel tube of a square CFST column is, the more local buckling is likely to occur. For this reason, we developed welded built-up square steel tube with stiffeners which are placed at the center of the tube width acts as an anchor. In this study, we conduct experimental test for three specimens of the 4m long span welded built-up square CFT column with parameters of L/D and D/t. And, the test results were compared with the analysis results by M-${\phi}$-P Program.
Keywords
Concrete Filled Steel Tubular Column; Slender Column; Cold-Form; Anchor; Width to Thickness Ratio; Eccentricity Ratio;
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