Cyclic Testing of Braces Laterally Restrained by Steel Studs
Publication: Journal of Structural Engineering
Volume 131, Issue 7
Abstract
This paper experimentally investigates the cyclic inelastic performance of concentrically braced frames with and without cold formed steel stud (CFSS) infills designed to laterally restrain braces and delay their buckling. Specimens have either diagonal tube or solid bar braces with and without CFSS and U brackets providing out-of-plane and in-plane buckling restraint. Behavioral characteristics of the specimens are quantified with an emphasis on hysteretic energy dissipation. Experimental results show that, at the same ductility levels, the cumulative energy dissipation of braced frames can be significantly increased when CFSS members are used to laterally restrain the braces against buckling. However, when tubular cross sections are used for braces, local buckling led to a reduced fracture life compared to the case without CFSS members. CFSS members appear to be relatively more effective when solid bar braces having large slenderness (tension-only braces) are used, since the difference between dissipated energies obtained with and without studs is substantial.
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Acknowledgments
This research was supported in part by the Earthquake Engineering Research Centers Program of the National Science Foundation (NSF) under Award Number NSFEEC-9701471 to the Multidisciplinary Center for Earthquake Engineering Research (MCEER). The first writer thanks the Istanbul Technical University (ITU) President Office and ITU Faculty of Architecture for their partial support during his stay in Buffalo, under Grant to Support Long Term Research Activities Abroad for Young Researchers. However, any opinions, findings, conclusions, and recommendations presented in this paper are those of the writers and do not necessarily reflect the views of the sponsors.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 131 • Issue 7 • July 2005
Pages: 1114 - 1124
Copyright
© 2005 ASCE.
History
Received: Dec 30, 2003
Accepted: Dec 23, 2004
Published online: Jul 1, 2005
Published in print: Jul 2005
Notes
Note. Associate Editor: Sherif El-Tawil
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