Effect of screw spacing into the behaviour of back-to-back cold-formed duplex stainless steel built-up channel sections under compression

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dc.contributor.author Roy, Krishanu en
dc.contributor.author Ting, TCH en
dc.contributor.author Lau, HH en
dc.contributor.author Lim, James en
dc.coverage.spatial Hong Kong, China en
dc.date.accessioned 2019-05-28T04:09:13Z en
dc.date.issued 2018-09-07 en
dc.identifier.uri http://hdl.handle.net/2292/46709 en
dc.description.abstract Stainless steel is becoming popular as structural members because of its increased corrosion resistance and durability. In CFS structures, built-up cold-formed stainless steel channels, connected back-to-back, are becoming increasingly popular as compression members. Current guidance by the American Iron and Steel Institute (AISI) and the Australian and New Zealand Standards for built-up carbon steel sections describes a modified slenderness approach, to take into account the spacing of the fasteners. Although, the AISI & AS/NZS does not include stainless steel built up columns. Limited experimental tests or finite element analyses have been reported in the literature for such back-to back cold-formed stainless steel lipped channel sections. The issue is addressed in this study. This paper presents a numerical investigation into the behaviour of back-to-back cold-formed duplex stainless steel built-up columns. A comprehensive parametric study has been carried out covering a wide range of slenderness and different cross section geometries to assess the performance of the design guidelines by AISI & AS/NZS. In total, 78 FE models were analysed. The effect of screw spacing on axial capacity was investigated. From the results of the parametric study, it was found that the current design guidelines are conservative by around 15% for all columns failed through overall buckling, however, design standards were un-conservative by around 6% for columns failed through local buckling. en
dc.description.uri https://www.polyu.edu.hk/cee/images/ICSC2018-Event_Report_Eng.pdf en
dc.relation.ispartof International Conference on Engineering Research and Practice for Steel Construction 2018 (ICSC2018) 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 Effect of screw spacing into the behaviour of back-to-back cold-formed duplex stainless steel built-up channel sections under compression en
dc.type Conference Item en
dc.rights.holder Copyright: The author en
pubs.finish-date 2018-09-07 en
pubs.start-date 2018-09-05 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Conference Paper en
pubs.elements-id 769138 en
pubs.org-id Engineering en
pubs.org-id Civil and Environmental Eng en
pubs.record-created-at-source-date 2019-04-22 en
pubs.online-publication-date 2018-09-07 en


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