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http://dx.doi.org/10.7781/kjoss.2015.27.2.219

Axial Load Test on Rectangular CFT Columns using High-Strength Steel and Slender Section  

Lee, Ho Jun (Dept. of Architecture & Architectural Engineering, Seoul National University)
Park, Hong Gun (Dept. of Architecture & Architectural Engineering, Seoul National University)
Choi, In Rak (Building Structure Research Group, POSCO Steel Solution Center)
Publication Information
Journal of Korean Society of Steel Construction / v.27, no.2, 2015 , pp. 219-229 More about this Journal
Abstract
An experimental study was performed for thin-walled rectangular concrete-filled tubular (CFT) columns. The present study mainly focused on evaluation of the axial load-carrying capacity of concrete-filled tubular columns using high-strength steel and slender section. The test parameters were width-to-thickness ratio, concrete strength, steel yield strength, and the use of stiffeners. Five specimens were tested under monotonic axial loading. Although elastic local buckling occurred in the slender-section specimens with high-strength steel, the specimens exhibited considerable post-buckling reserve. The test results also satisfied the predictions of a current design code. The specimens strengthened with vertical stiffeners exhibited improved strength and ductility when compared with the un-stiffened specimens.
Keywords
Rectangular CFT column; High-strength steel; Slender section; Concentric axial loading; Stiffener;
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Times Cited By KSCI : 2  (Citation Analysis)
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