Lateral-Torsional Stability of Steel Web-Tapered I-Beams
Publication: Journal of Structural Engineering
Volume 124, Issue 10
Abstract
This paper deals with the stability behavior of web-tapered beams subjected to bending loads. According to the current AISC specifications, a tapered member is treated as prismatic with modified length and cross section identical to that of the tapered member's smaller end. Modification factors are used to determine the modified length and also to account for the moment gradient within the unbraced length and the restraining effect for adjacent spans. In this paper, these factors are evaluated via a finite-element analysis and compared to the ones proposed by the current specifications. The current design specifications for steel tapered beams are reexamined, and modifications that cover a wider range of geometry and loading cases are proposed.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 124 • Issue 10 • October 1998
Pages: 1208 - 1216
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Oct 1, 1998
Published in print: Oct 1998
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