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Strength of Square Shaped CFT Stub Column Considering the Confining Effect of Concrete  

Hwang, Won Sup (인하대학교 토목공학과)
Kim, Dong Jo (인하대학교 토목공학과)
Publication Information
Journal of Korean Society of Steel Construction / v.14, no.6, 2002 , pp. 813-822 More about this Journal
Abstract
The squash strength and design strength are smaller than the experimental strength of square shaped concrete-filled steel tubular columns in a short concentrically loaded column. This study presents an evaluation procedure accounting for the confining effect of concrete. For the purpose of evaluating a confining effect of concrete, the 3D finite element method was used. The influence of parameters, width-thickness ratios, strength of the concrete and the yield strength of the steel, were examined. The suggested evaluation procedure that assembled three parameters was compared with previous experimental results. Also, the tendency of the confining effect of concrete was examined in the three types of load application.
Keywords
concrete-filled steel tubular; confining effect of concrete; average confining stress;
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