The Structural Engineer > Archive > Volume 57 (1979) > Issues > Issue 2 > The Strength of Square Steel Box Columns - Design Curves and their Theoretical Basis
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The Strength of Square Steel Box Columns - Design Curves and their Theoretical Basis

The paper is concerned with the problem of predicting theoretically the strength of square thin-walled steel box columns that are pinended and loaded centrally at the ends. Interaction between yielding, local buckling (possible in all four component plates), and overall buckling makes this a difficult problem to solve rigorously. An approximate, and correspondingly economical, method of solution is presented and is used to analyse a range of cases. Local buckling of the plate elements is allowed for by the technique of using an appropriate average compressive stress-strain curve. G.H. Little