Net Section Tension Capacity of Cold-Reduced Sheet Steel Angle Braces Bolted at One Leg
Publication: Journal of Structural Engineering
Volume 139, Issue 3
Abstract
This paper examines the accuracy of equations specified by the North American and Australasian steel structures codes for determining the net section tension capacity of a cold-formed steel angle brace bolted at one leg. The configurations tested in the laboratory include single equal angle, single unequal angle bolted at the wider leg, single unequal angle bolted at the narrow leg, double angles, and alternate angles. The steel materials used in the experiment are among those with the lowest ductility for which nominal tensile strength is permitted by cold-formed steel design codes to be fully utilized in structural design calculations. Based on a modification to the equation derived for channel braces bolted at the web, a design equation is proposed for determining the net section tension capacity of a cold-formed steel angle brace bolted at one leg. The proposed equation is demonstrated, through laboratory tests on 61 specimens composed of G450 sheet steel, to be more accurate than the code equations and those existing in the literature.
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Acknowledgments
The writers thank John Kralic, Manager, Lysaght Research & Technology, Bluescope Steel Limited, for supplying the G450 sheet steel materials used in the present work. The specimens were fabricated by Ritchie McLean and tested with the assistance of Jarrod Doyle and Julian Frate, two honors thesis students at the University of Wollongong.
References
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 139 • Issue 3 • March 2013
Pages: 328 - 337
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Dec 19, 2011
Accepted: Jun 5, 2012
Published online: Aug 11, 2012
Published in print: Mar 1, 2013
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