Thin-walled steel box columns under biaxial loading

N. E. Shanmugam, J. Y Richard Liew, S. L. Lee

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

A numerical method to investigate the ultimate strength behavior if thin-walled steel box columns subjected to axial load and biaxial end moments is presented in this paper. The columns are of uniform cross section along the length and simply supported at the ends. The local buckling of the component plates is taken into account by applying the effective width formulas proposed in an earlier paper. Moment-curvature-thrust relationships for a locally buckled box section is developed by using the tangent stiffness method, and the column analysis is then carried out by integrating, numerically, the moment-curvature-thrust relationship along the length. Due allowance is made in the analysis to account for imperfections such as initial column deflections and welding residual stresses. The accuracy of the method is established by comparison with limited experimental results for uniaxially loaded columns. Results for biaxially loaded columns are presented in the form of interaction diagrams. Several parameters such as plate slenderers column slenderness, level of residual stress, axial load, and load path have been considered.

Original languageEnglish
Pages (from-to)2706-2726
Number of pages21
JournalJournal of structural engineering New York, N.Y.
Volume115
Issue number11
Publication statusPublished - Nov 1989
Externally publishedYes

Fingerprint

Steel
Axial loads
Residual stresses
Buckling
Loads (forces)
Numerical methods
Welding
Stiffness
Defects

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

Cite this

Shanmugam, N. E., Liew, J. Y. R., & Lee, S. L. (1989). Thin-walled steel box columns under biaxial loading. Journal of structural engineering New York, N.Y., 115(11), 2706-2726.

Thin-walled steel box columns under biaxial loading. / Shanmugam, N. E.; Liew, J. Y Richard; Lee, S. L.

In: Journal of structural engineering New York, N.Y., Vol. 115, No. 11, 11.1989, p. 2706-2726.

Research output: Contribution to journalArticle

Shanmugam, NE, Liew, JYR & Lee, SL 1989, 'Thin-walled steel box columns under biaxial loading', Journal of structural engineering New York, N.Y., vol. 115, no. 11, pp. 2706-2726.
Shanmugam, N. E. ; Liew, J. Y Richard ; Lee, S. L. / Thin-walled steel box columns under biaxial loading. In: Journal of structural engineering New York, N.Y. 1989 ; Vol. 115, No. 11. pp. 2706-2726.
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