Structural Ductility in Hybrid High Performance Steel Beams
This article is a reply.
VIEW THE ORIGINAL ARTICLEPublication: Journal of Structural Engineering
Volume 129, Issue 12
Abstract
The present study employs experimentally verified nonlinear finite element modeling techniques for the study of hybrid high performance steel I-shaped beams. An evaluation as to the appropriateness of using the current American building and bridge specification (as reported by AASHTO in 1998 and AISC in 1999) provisions for cross-sectional compactness and adequate bracing is carried out within the context of applications involving A709 Gr. HPS483W high performance steel. It is observed from the current research that hybrid high performance steel (HPS) beams proportioned and braced according to current AISC and AASHTO flange compactness, web compactness, and bracing provisions, will exhibit less than half of the required flexural ductility needed to accommodate inelastic force redistribution. As a result of this observation, new flange compactness criteria, as well as new bracing criteria, are proposed in the present paper for use in the design of A709 Gr. HPS483W hybrid beams employing compact webs made from lower strength steels.
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Information
Published In
Journal of Structural Engineering
Volume 129 • Issue 12 • December 2003
Pages: 1584 - 1595
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: May 14, 2002
Accepted: Jan 27, 2003
Published online: Nov 14, 2003
Published in print: Dec 2003
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