Interaction of Local and Overall Instability of Compressed Box Columns
Publication: Journal of Structural Engineering
Volume 117, Issue 11
Abstract
In this paper the curved‐shell finite‐element method is adopted to analyze the ultimate strength of compressed stiffened plates with different stress gradients, the interaction curves of thin‐walled square box sections, and the interactive instability of axially and eccentrically loaded square box columns. The principal modes of initial imperfections are taken into account in analysis. Comparison between the results of the prevailing specifications and the theory of this paper is presented. Errors of the specifications are checked. Equations for calculating the ultimate strength of centrically loaded and bending stiffened plates and thin‐walled square box sections are proposed based on the theoretical results. A simple interaction equation is presented for calculating the ultimate strength of eccentrically loaded sections. And, finally, effective design methods for axially and eccentrically loaded columns are suggested. The results of the suggested methods are in good agreement with those of the finite‐element method.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 117 • Issue 11 • November 1991
Pages: 3337 - 3355
Copyright
Copyright © 1991 ASCE.
History
Published online: Nov 1, 1991
Published in print: Nov 1991
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