Numerical Analysis of Composite Steel-Concrete Columns of Arbitrary Cross Section
Publication: Journal of Structural Engineering
Volume 131, Issue 11
Abstract
This paper presents a numerical formulation for the nonlinear analysis of slender steel-concrete composite columns of generic cross-sectional shape, subjected to axial force and biaxial bending. The cross section is defined in terms of a number of closed polygonal loops of a specific material, each one with its own stress-strain relation, with reinforcement bars embedded in the polygons. The material and geometrically nonlinear equlibrium problem is solved by the finite element method, with displacement-based stress resultant beam-column elements. The proposed scheme turns possible, with a unified treatment, to perform analyses of concrete-filled steel tubes, fully or partially encased steel profiles, or less usual cross sections present on composite construction. The robustness and accuracy of the formulation is verified against numerical and experimental results available in the literature.
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Acknowledgment
The writers wish to thank USIMINAS S. A. for financial support in the form of a grant for the second writer.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 131 • Issue 11 • November 2005
Pages: 1721 - 1730
Copyright
© 2005 ASCE.
History
Received: Apr 13, 2004
Accepted: Jan 31, 2005
Published online: Nov 1, 2005
Published in print: Nov 2005
Notes
Note. Associate Editor: Donald W. White
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