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Nonlinear finite element analysis of Concrete Filled Carbon Tube Columns Using Plasticity Theory  

Kim, Heecheul (경희대학교 건축공학과)
Seo, Sang Hoon (경희대학교 대학원)
Lee, Young Hak (경희대학교 건축공학과)
Publication Information
KIEAE Journal / v.7, no.6, 2007 , pp. 119-126 More about this Journal
Abstract
In the field of composite structures, the use of carbon tube for the confinement of concrete has been arisen since 1990's. However, experimental and analytical studies were limited to those of reinforced concrete and concrete filled steel tube. The carbon tube provides excellent confinement capabilities for concrete cores, enhancing compressive strength and ductility of concrete significantly. The carbon tube has high tensile strength, light weight, corrosion immunity and high fatigue strength properties. Since carbon fiber is an anisotropic material, carbon tube could be optimized by adjusting the fiber orientation, thickness and the number of different layers. In this study, both experimental and analytical studies of axial and lateral behavior of full-scale CFCT (Concrete Filled Carbon Tube) columns subjected to monotonic axial load were carried out using Drucker-Prager theory. And, based on comparison results between experiment results and analytical results, k factor estimation was proposed for effective analysis.
Keywords
Carbon sheet; Column; Concrete;
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