Cold-formed steel channel sections under end-two-flange loading condition: Design for edge-stiffened holes, unstiffened holes and plain webs

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dc.contributor.author Uzzaman, A en
dc.contributor.author Lim, James en
dc.contributor.author Nash, D en
dc.contributor.author Roy, Krishanu en
dc.date.accessioned 2020-01-13T01:35:45Z en
dc.date.issued 2020-02 en
dc.identifier.citation Thin-Walled Structures 147:23 pages Article number 106532 Feb 2020 en
dc.identifier.issn 0263-8231 en
dc.identifier.uri http://hdl.handle.net/2292/49664 en
dc.description.abstract In cold-formed steel (CFS) channel sections, web holes are becoming increasingly popular. Such holes, however, result in the sections becoming more susceptible to web crippling, especially under concentrated loads applied near the web holes. Traditional web holes are normally punched or bored and are unstiffened. Recently, a new generation of CFS channel sections with edge-stiffened web holes has been developed by the CFS industry and is being widely used. However, no research is available in the literature which investigated the web crippling strength of CFS channel sections with edge-stiffened circular web holes under the end-two-flange (ETF) loading conditions. A combination of experimental tests and non-linear FEA were used to investigate the effect of such stiffened holes on web crippling behaviour under ETF loading conditions. The results of 30 web crippling tests are presented. Non-linear FE models are described, and the results are compared against the laboratory test results; a good agreement was obtained in terms of both the strength and failure modes. The results indicate that the stiffened holes can significantly improve the web crippling strength of CFS channel sections. A parametric study involving 1116 FEA was then performed, covering the effect of different hole sizes, edge-stiffener lengths and fillet radii, length of the bearing plates and position of holes in the web. Finally, design recommendations in the form of web crippling strength reduction factors are proposed, that are conservative to both the experimental and FE results en
dc.publisher Elsevier en
dc.relation.ispartofseries Thin-Walled Structures en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Cold-formed steel channel sections under end-two-flange loading condition: Design for edge-stiffened holes, unstiffened holes and plain webs en
dc.type Journal Article en
dc.identifier.doi 10.1016/j.tws.2019.106532 en
pubs.volume 147 en
dc.rights.holder Copyright: 2019 Elsevier Ltd. en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 789170 en
pubs.org-id Engineering en
pubs.org-id Civil and Environmental Eng en
pubs.number 106532 en
pubs.record-created-at-source-date 2019-12-17 en
pubs.online-publication-date 2019-12-13 en


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