Behavior of Steel Rectangular Hollow Sections Subject to Blast Loading
Publication: Journal of Structural Engineering
Volume 143, Issue 12
Abstract
Large-scale far-field air-blast testing of cold-formed steel rectangular hollow sections (RHS) in flexure has been performed for the first time. These arena trials illustrated the excellent performance and ductility of cold-formed tubular steel members under extreme blast loads, without any fractures experienced in the cross section. These instrumented tests provided much performance data that enabled the validation of subsequent models, using both single-degree-of-freedom and explicit finite-element analysis. By means of a parametric numerical study, the behavioral models were used to illustrate the influence of key variables affecting the response. Guidance is then given for the preliminary selection of RHS flexural members for blast design applications to achieve various ductility ratios.
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Acknowledgments
The authors are appreciative of the financial aid and in-kind support of the Explora Foundation to the University of Toronto “Centre for Resilience of Critical Infrastructure.” Financial support has also been received from the Natural Sciences and Engineering Research Council of Canada (NSERC), the Steel Structures Education Foundation (SSEF), the Thornton Tomasetti Foundation, the Lyon Sachs Graduate Research Fund, the Australian Research Council (ARC) Discovery Grant (Project ID: DP130100181), and the Tsinghua Initiative Scientific Research Program (No. 20131089347). Technical advice and assistance from Prof. D. Z. Yankelevsky and Mr. M. Gow are also highly appreciated.
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Information & Authors
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Published In
Journal of Structural Engineering
Volume 143 • Issue 12 • December 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Jan 18, 2017
Accepted: Jun 27, 2017
Published online: Sep 28, 2017
Published in print: Dec 1, 2017
Discussion open until: Feb 28, 2018
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