Nonlinear Analysis of Axially Loaded Concrete-Filled Tube Columns with Confinement Effect
Publication: Journal of Structural Engineering
Volume 129, Issue 10
Abstract
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 is small (say For square CFT columns, the tubes do not provide a large confining effect to the concrete especially when the width-to-thickness ratio is large (say 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.
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Information
Published In
Journal of Structural Engineering
Volume 129 • Issue 10 • October 2003
Pages: 1322 - 1329
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Jan 3, 2002
Accepted: Dec 16, 2002
Published online: Sep 15, 2003
Published in print: Oct 2003
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