Local Buckling of Welded Box Beams Made of Ultrahigh-Strength Steels
Publication: Journal of Structural Engineering
Volume 144, Issue 7
Abstract
Laboratory tests have shown that current standardized design rules lead to overly optimistic results for calculated ultimate loads of plated structures, especially for internal elements such as box beams. Additionally, the validity of applying equations to compute local buckling resistance might be restricted to steel grades for which the yield strength is less than 500–700 MPa. Both the literature survey and recent experimental buckling tests using ultrahigh-strength steel (UHSS) show that the current design equations can be extended to at least a nominal yield strength of 1,000 MPa. Additionally, a new simplified equation for the reduction factor is proposed and a statistical calculation is presented to compare current and proposed calculation methods.
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Acknowledgments
This study has been partially funded by the Finnish Funding Agency for Technology and Innovation and Ruukki as part of the research program, Advanced Metals Technology—New Products. The authors also thank Mr. Jouko Kouhi from the Finnish Constructional Steelwork Association for his technical assistance.
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Information
Published In
Journal of Structural Engineering
Volume 144 • Issue 7 • July 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Nov 24, 2016
Accepted: Nov 27, 2017
Published online: Apr 21, 2018
Published in print: Jul 1, 2018
Discussion open until: Sep 21, 2018
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