Research Article
Mar 1978
Unbraced Length Requirements for Steel I-Beams
This article has a reply.
VIEW THE REPLYThis article has a reply.
VIEW THE REPLYPublication: Journal of the Structural Division
Volume 104, Issue 3
Abstract
Solutions are obtained for inelastic buckling of I-shaped beams of structural steel and the relationship between unsupported length and the extent of flexural deformation sustained at the onset of buckling is examined. The load consists of a uniform moment. End conditions assumed include full fixity, free rotation about the minor principal axis with restrained warping and free rotation about the minor axis with unrestrained warping. The extensional stiffness is obtained from a theory that considers partially yielded steel to consist of an inhomogeneous mass consisting of unyielded steel and steel which has passed into strain hardening. Of the parameters examined, the minor axis radius of gyration divided by the yield stress appeared to best correlate unsupported length with the amount of flexural deformation sustained at the onset of buckling. Restraining warping at the ends of simply supported beams significantly suppresses their tendancy to buckle.
Get full access to this article
View all available purchase options and get full access to this article.
Information & Authors
Information
Published In
Journal of the Structural Division
Volume 104 • Issue 3 • March 1978
Pages: 479 - 490
Copyright
© 1978 American Society of Civil Engineers.
History
Published in print: Mar 1978
Published online: Feb 1, 2021
Permissions
Request permissions for this article.
Authors
Affiliations
Morris Ojalvo, M.ASCE
Professor of Civ. Engrg., Ohio State Univ., Columbus, Ohio
Ronald R. Weaver, AM.ASCE
Structural Engr., McDonnell Douglas Corp., Douglas Aircraft Div., Long Beach, Calif.
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.
Cited by
View Options
Get Access
Access content
Please select your options to get access
Log in/Register
Log in via your institution (Shibboleth)
ASCE Members:
Please log in to see member pricing
Purchase
Save for later Item saved, go to cart Information on ASCE Library Cards
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.
Get Access
Access content
Please select your options to get access
Log in/Register
Log in via your institution (Shibboleth)
ASCE Members:
Please log in to see member pricing
Purchase
Save for later Item saved, go to cart Information on ASCE Library Cards
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.