Nonlinear Analysis of Axially Loaded Concrete-Filled Tube Columns with Confinement Effect

Proper material constitutive models for concrete-filled tube (CFT) columns are proposed and verified by the nonlinear finite element program ABAQUS against experimental data. The cross sections of the CFT columns in the numerical analysis are categorized into three groups, i.e., circular section, sq...

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Veröffentlicht in:Journal of structural engineering (New York, N.Y.) N.Y.), 2003-10, Vol.129 (10), p.1322-1329
Hauptverfasser: Hu, Hsuan-Teh, Huang, Chiung-Shiann, Wu, Ming-Hsien, Wu, Yih-Min
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Sprache:eng
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Zusammenfassung:Proper material constitutive models for concrete-filled tube (CFT) columns are proposed and verified by the nonlinear finite element program ABAQUS against experimental data. The cross sections of the CFT columns in the numerical analysis are categorized into three groups, i.e., circular section, square section, and square section stiffened by reinforcing ties. Via the numerical analyses, it is shown that for circular CFT columns, the tubes can provide a good confining effect to the concrete especially when the width-to-thickness ratio D/t is small (say D/t30). The confining effect of square CFT columns with reinforcing ties is enhanced by the use of reinforcing ties especially when the tie spacing is small and the tie number (or tie diameter) is large.
ISSN:0733-9445
1943-541X
DOI:10.1061/(ASCE)0733-9445(2003)129:10(1322)