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Article: Shift of effective centroid of channel columns

TitleShift of effective centroid of channel columns
Authors
Issue Date1999
PublisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/st.html
Citation
Journal Of Structural Engineering, 1999, v. 125 n. 5, p. 524-531 How to Cite?
AbstractIn the design of pin-ended channel columns, it is necessary to account for the shift of the effective centroid caused by local buckling. The current American Iron and Steel Institute's 1996 Specification for the Design of Cold-Formed Steel Structural Members and the 1996 Australian/New Zealand standard Cold-Formed Steel Structures calculate the shift by use of effective widths. However, the ability of the effective width rules to accurately predict this shift has not been experimentally assessed. In this paper, recent tests on fixed-ended channel columns are used to obtain values of the shift of the effective centroid, including its variation with the applied load. It is concluded that effective width rules of the American and Australian specifications accurately predict the direction and magnitude of the shift of the effective centroid for plain channels but not for lipped channels with slender flanges. The paper proposes simple modifications to the current effective width rules that provide agreement between the measured and predicted shifts of the effective centroid for lipped channels. The modifications are shown to produce more accurate design strengths for lipped channel columns.
Persistent Identifierhttp://hdl.handle.net/10722/150130
ISSN
2015 Impact Factor: 1.7
2015 SCImago Journal Rankings: 1.431
References

 

DC FieldValueLanguage
dc.contributor.authorYoung, Ben_US
dc.contributor.authorRasmussen, KJRen_US
dc.date.accessioned2012-06-26T06:01:44Z-
dc.date.available2012-06-26T06:01:44Z-
dc.date.issued1999en_US
dc.identifier.citationJournal Of Structural Engineering, 1999, v. 125 n. 5, p. 524-531en_US
dc.identifier.issn0733-9445en_US
dc.identifier.urihttp://hdl.handle.net/10722/150130-
dc.description.abstractIn the design of pin-ended channel columns, it is necessary to account for the shift of the effective centroid caused by local buckling. The current American Iron and Steel Institute's 1996 Specification for the Design of Cold-Formed Steel Structural Members and the 1996 Australian/New Zealand standard Cold-Formed Steel Structures calculate the shift by use of effective widths. However, the ability of the effective width rules to accurately predict this shift has not been experimentally assessed. In this paper, recent tests on fixed-ended channel columns are used to obtain values of the shift of the effective centroid, including its variation with the applied load. It is concluded that effective width rules of the American and Australian specifications accurately predict the direction and magnitude of the shift of the effective centroid for plain channels but not for lipped channels with slender flanges. The paper proposes simple modifications to the current effective width rules that provide agreement between the measured and predicted shifts of the effective centroid for lipped channels. The modifications are shown to produce more accurate design strengths for lipped channel columns.en_US
dc.languageengen_US
dc.publisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/st.htmlen_US
dc.relation.ispartofJournal of Structural Engineeringen_US
dc.titleShift of effective centroid of channel columnsen_US
dc.typeArticleen_US
dc.identifier.emailYoung, B:young@hku.hken_US
dc.identifier.authorityYoung, B=rp00208en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0033121616en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033121616&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume125en_US
dc.identifier.issue5en_US
dc.identifier.spage524en_US
dc.identifier.epage531en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridYoung, B=7402192398en_US
dc.identifier.scopusauthoridRasmussen, KJR=7402496265en_US

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