Local and Interaction Buckling of Polygonal Section Steel Columns
Publication: Journal of Structural Engineering
Volume 118, Issue 10
Abstract
The purpose of this paper is to investigate experimentally the local buckling strength and interaction strength between local and overall buckling of closed polygonal section steel columns. A total of 23 specimens was tested to failure under axial compression loading. Seventeen specimens were stub columns with regular rectangular, pentagonal, hexagonal, heptagonal, and octagonal sections. The others were medium‐length columns with regular rectangular, hexagonal, and octagonal sections. An empirical formula based on the compression tests is presented to predict local buckling strength and interaction strength between local and overall buckling strengths of closed polygonal steel columns. Edge strain at the maximum stress‐and‐strain energy is an important standard to estimate the load‐carrying capacity of a member same as the maximum stress. A comparison of edge strain and strain energy with equivalent width‐thickness ratio is included. They show a similar tendency and decrease with the increase of equivalent width‐thickness ratio. Also, they decrease with the increase with the equivalent slenderness ratio.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 118 • Issue 10 • October 1992
Pages: 2659 - 2676
Copyright
Copyright © 1992 ASCE.
History
Published online: Oct 1, 1992
Published in print: Oct 1992
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