Theoretical study on the post-local buckling of steel plates in concrete-filled box columns

Theoretical study on the post-local buckling of steel plates in concrete-filled box columns

This paper presents a theoretical study on the post-local buckling behaviour of steel plates in welded steel box columns filled with concrete, by using the finite element method. The effects of various geometric imperfections, residual stresses and width-to-thickness ratios on the post-local bucklin...

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Veröffentlicht in:Computers & structures 2000-05, Vol.75 (5), p.479-490
Hauptverfasser: Liang, Q.Q., Uy, B.
Format: Artikel
Sprache:eng
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Composite columns
Concrete
Effective width
Finite element analysis
Post-local buckling
Steel plates
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description This paper presents a theoretical study on the post-local buckling behaviour of steel plates in welded steel box columns filled with concrete, by using the finite element method. The effects of various geometric imperfections, residual stresses and width-to-thickness ratios on the post-local buckling characteristics of steel plates in composite columns are investigated. A novel method is developed for evaluating the initial local buckling loads and post-local buckling reserve strength of steel plates with imperfections associated with a theoretical analysis. Two effective width formulas are proposed for the design of clamped steel plates restrained by concrete and are employed in the ultimate strength calculation of short concrete-filled steel box columns. The proposed design models are compared with existing experimental results with a good agreement.
doi_str_mv 10.1016/S0045-7949(99)00104-2
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subjects Composite columns
Concrete
Effective width
Finite element analysis
Post-local buckling
Steel plates
title Theoretical study on the post-local buckling of steel plates in concrete-filled box columns
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