Experimental Investigation on Stub-Column Behavior of Cold-Formed High-Strength Steel Tubular Sections
Publication: Journal of Structural Engineering
Volume 142, Issue 5
Abstract
This paper presents the experimental investigation on the compressive behavior of cold-formed high-strength steel tubular stub columns. In this paper, the nominal 0.2% proof stress of the high-strength steel was 700, 900, and 1,100 MPa. A total of 25 stub column tests on circular, rectangular, and square hollow structural sections were conducted. Geometric imperfections and load-deformation histories were reported and assessed. The experimental results were compared against the design values calculated from the Australian, European, and North American codes, and the corresponding compactness criteria were assessed. A finite-element model, which incorporated the varying material properties, was described, and the influence of geometric and material imperfections was also evaluated. The finite-element results successfully captured the experimental observations and can be adopted for future parametric studies.
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Acknowledgments
The authors would like to thank the technicians and the final year undergraduate student Mr. Ho-Hin Li from the Department of Civil Engineering at The University of Hong Kong for their assistance in helping the experimental work. The authors are also grateful to Rautaruukki for supplying the cold-formed high-strength tubular test specimens. The research work described in the article was supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. 17209614).
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Information & Authors
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Published In
Journal of Structural Engineering
Volume 142 • Issue 5 • May 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Jun 30, 2015
Accepted: Oct 14, 2015
Published online: Dec 29, 2015
Published in print: May 1, 2016
Discussion open until: May 29, 2016
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