Elastic Stiffness Comparisons between RBS Beams with Either Flange or Web Reductions
Publication: Journal of Structural Engineering
Volume 138, Issue 7
Abstract
This paper compares the elastic stiffness of reduced beam section (RBS) beams with either flange or web reductions. The former has received considerable attention. However, recently the latter has been shown to have superior plastic rotation capacity and energy dissipation characteristics and is generally more amenable to retrofitting strategies. Initially, a closed-form elastic stiffness matrix for a RBS beam with web reduction is derived from first principles. Its performance is then compared with its reduced flange counterpart using data that are available in the literature. The differences between the two approaches are highlighted in a small parametric study.
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Acknowledgments
The writers would like to acknowledge the important contributions of Dr. W. P. Howson, senior lecturer of Cardiff University, United Kingdom, for his continuous and valuable guidance and comments throughout. Dr. Howson has reviewed the work in detail and his suggestions have greatly improved the quality of the paper.
References
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Published In
Journal of Structural Engineering
Volume 138 • Issue 7 • July 2012
Pages: 961 - 966
Copyright
© 2012. American Society of Civil Engineers.
History
Received: May 14, 2010
Accepted: Apr 22, 2011
Published online: Apr 25, 2011
Published in print: Jul 1, 2012
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