Buckling Curves for Cold-Formed Stainless-Steel Columns and Beams
Publication: Journal of Structural Engineering
Volume 147, Issue 10
Abstract
This paper summarizes the background information and methodology used to derive a set of buckling curves proposed for cold-formed stainless steel columns and beams incorporated in the recently revised SEI/ASCE 8-21 Specification. The study is based on experimental and numerical data collected from the literature on cold-formed stainless steel columns and beams featuring ASTM grades 304, 2101, 430, 404, and 443. Because most of the investigated specimens exhibited slender cross-sections, both the effective width method (EWM) and the direct strength method (DSM) are considered to account for the effect of interaction between global and local buckling on member strength. Buckling curves for flexural buckling and lateral-torsional buckling codified in current international standards are assessed based on the SEI/ASCE 8 reliability requirements, and new curves are derived accordingly. The proposed new buckling curves include expressions to account for the postyielding capacity of stainless steel columns and the inelastic buckling resistance of cold-formed stainless steel beams. In addition, a new local buckling strength curve for members in flexure is proposed in the format of the DSM and shown to provide equivalent design resistances to the EWM.
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Data Availability Statement
Some or all data, models, or code used during the study were provided by a third party: experimental and numerical data. These materials may be accessed from the original publications referenced in the paper.
Acknowledgments
Funding for this investigation was received from the European Union’s Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie Grant Agreement No. 842395 (Project NewGeneSS).
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Published In
Journal of Structural Engineering
Volume 147 • Issue 10 • October 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Dec 4, 2020
Accepted: Apr 1, 2021
Published online: Jul 27, 2021
Published in print: Oct 1, 2021
Discussion open until: Dec 27, 2021
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