Local buckling of steel plates in concrete-filled thin-walled steel tubular beam-columns

Liang, Qing Quan and Uy, Brian and Liew, J. Y. Richard (2007) Local buckling of steel plates in concrete-filled thin-walled steel tubular beam-columns. Journal of Constructional Steel Research, 63 (3). pp. 396-405. ISSN 0143-974X

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Abstract

[Abstract]: The availability of high strength steels and concrete leads to the use of thin steel plates in concrete-filled steel tubular beam-columns. However, the use of thin steel plates in composite beam-columns gives a rise to local buckling that would appreciably reduce the strength and ductility performance of the members. This paper studies the critical local and post-local buckling behavior of steel plates in concrete-filled thin-walled steel tubular beam-columns by using the finite element analysis method. Geometric and material nonlinear analyses are performed to investigate the critical local and post-local buckling strengths of steel plates under compression and in-plane bending. Initial geometric imperfections and residual stresses presented in steel plates, material yielding and strain hardening are taken into account in the nonlinear analysis. Based on the results obtained from the nonlinear finite element analyses, a set of design formulas are proposed for determining the critical local buckling and ultimate strengths of steel plates in concrete-filled steel tubular beam-columns. In addition, effective width formulas are developed for the ultimate strength design of clamped steel plates under non-uniform compression. The accuracy of the proposed design formulas is established by comparisons with available solutions. The proposed design formulas can be used directly in the design of composite beam-columns and adopted in the advanced analysis of concrete-filled thin-walled steel tubular beam-columns to account for local buckling effects.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Deposited in accordance with the copyright policy of the publisher.
Depositing User: Dr Stephen Liang
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 11 Oct 2007 00:50
Last Modified: 02 Jul 2013 22:39
Uncontrolled Keywords: effective width, finite element analysis, local buckling, post-local buckling, steel plates, strength
Fields of Research (FOR2008): 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
Identification Number or DOI: doi: 10.1016/j.jcsr.2006.05.004
URI: http://eprints.usq.edu.au/id/eprint/1725

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