Research Article
Mar 1981
Buckling of Web Posts in Perforated Beams
Publication: Journal of the Structural Division
Volume 107, Issue 3
Abstract
The buckling of the web post is investigated for steel I-beams containing adjacent rectangular web openings, and a method is presented for determining the buckling moment. An expression is derived for the effective buckling length of a web post, and its validity is demonstrated by means of tests on scale models. The elastic buckling moment of the post could then be found from elastic buckling theory, and it is used to obtain the actual buckling moment from an inelastic buckling analysis due to Nethercot and Trahair. Analysis of practial beams shows that web post buckling can affect the ultimate flexural strength of perforated plate girders, but it is not significant for rolled sections.
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Published In
Journal of the Structural Division
Volume 107 • Issue 3 • March 1981
Pages: 507 - 519
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© 1981 American Society of Civil Engineers.
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Published in print: Mar 1981
Published online: Feb 1, 2021
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Authors
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Brian K. Dougherty, M.ASCE
Sr. Leet., Dept. of Civ. Engrg., Univ. of Natal, King George V Avenue, Durban, Natal 4001, South Africa, South Africa
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.