Cold-formed stainless steel CHS beam-columns – testing, simulation and design
Author(s)
Buchanan, Craig
Zhao, Ou
Real, Esther
Gardner, Leroy
Type
Journal Article
Abstract
The present work was prompted by shortcomings identi ed in existing design provisions for stainless steel circular hollow section (CHS) beam-columns. First, addressing a lack of existing experimental data, a series of ferritic stainless steel CHS beam-column tests was undertaken at the cross-section and member levels. In total, 26 beam-column tests, including two section sizes (a non-slender class 3 and slender class 4 cross-section), two member slenderness values for each cross-section type and a wide range of loading eccentricities were carried out to investigate the interaction between local and global buckling. Following
validation of nite element (FE) models, a numerical study was then undertaken to explore the buckling response of stainless steel CHS beam-columns, covering austenitic, duplex and ferritic grades with a wide range of local and global slendernesses and applied loading eccentricities. Over 2000 numerical results were generated and used to assess new design
proposals for stainless steel beam-columns, featuring improved compression and bending end points and new interaction factors. The new proposals are more consistent and more accurate
in their resistance predictions than the current EN 1993-1-4 (2015) design approach. The reliability of the new proposals has been veri ed by means of statistical analyses according
to EN 1990 (2005).
validation of nite element (FE) models, a numerical study was then undertaken to explore the buckling response of stainless steel CHS beam-columns, covering austenitic, duplex and ferritic grades with a wide range of local and global slendernesses and applied loading eccentricities. Over 2000 numerical results were generated and used to assess new design
proposals for stainless steel beam-columns, featuring improved compression and bending end points and new interaction factors. The new proposals are more consistent and more accurate
in their resistance predictions than the current EN 1993-1-4 (2015) design approach. The reliability of the new proposals has been veri ed by means of statistical analyses according
to EN 1990 (2005).
Date Issued
2020-06-15
Date Acceptance
2020-01-21
Citation
Engineering Structures, 2020, 213, pp.1-23
ISSN
0141-0296
Publisher
Elsevier
Start Page
1
End Page
23
Journal / Book Title
Engineering Structures
Volume
213
Copyright Statement
© 2020 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Engineering & Physical Science Research Council (E
Identifier
https://www.sciencedirect.com/science/article/pii/S0141029619317316?via%3Dihub
Grant Number
CIST_P66773
Subjects
0905 Civil Engineering
0912 Materials Engineering
0915 Interdisciplinary Engineering
Civil Engineering
Publication Status
Published
Date Publish Online
2020-04-10