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Article: Non-linear behaviour and load-carrying capacity of CFRP-strengthened lipped channel steel columns

TitleNon-linear behaviour and load-carrying capacity of CFRP-strengthened lipped channel steel columns
Authors
KeywordsBuckling behaviour
Carbon fibre sheets
Cold-formed steel columns
Distortional failure
Experimental tests
FEM simulation
FRP-strengthening
GBT analysis
Load-carrying capacity
Local-plate failure
Post-buckling behaviour
Issue Date2008
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstruct
Citation
Engineering Structures, 2008, v. 30 n. 10, p. 2613-2630 How to Cite?
AbstractThis paper reports the results of an experimental and numerical investigation on the non-linear behaviour and load-carrying capacity of CFRP-strengthened cold-formed steel lipped channel columns, devoting special attention to their local-plate and/or distortional buckling behaviours. A preliminary GBT-based study concerning the column elastic buckling behaviour is performed, focusing on determining the (i) sheet location (web, flanges and/or lips) and (ii) carbon fibre orientation (longitudinal, transverse or inclined) that optimize the strengthening procedure (enhanced buckling behaviour vs. cost). Then, an experimental programme comprising a total of 19 short and long fixed-ended lipped channel columns is described. The columns were strengthened with carbon fibre sheets (CFS) bonded at different outer surface locations (web, flanges or lips) and having the fibres oriented either longitudinally or transversally - since the aim of the study is to assess the influence of the CFS on the column structural response, bare steel specimens were also tested. The experimental results, which consist of non-linear equilibrium paths (applied load vs. axial shortening) and ultimate strength values (most of them associated with local-plate and/or distortional failure mechanisms), are subsequently used to calibrate and validate geometrically and physically non-linear numerical analyses based on shell finite element models and carried out in the code Abaqus. Finally, on the basis of both the experimental and numerical results obtained, some relevant conclusions are drawn concerning the most effective CFS location and fibre orientation to strengthen lipped channel steel columns affected by local-plate and/or distortional buckling. © 2008 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/58541
ISSN
2015 Impact Factor: 1.893
2015 SCImago Journal Rankings: 1.813
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSilvestre, Nen_HK
dc.contributor.authorYoung, Ben_HK
dc.contributor.authorCamotim, Den_HK
dc.date.accessioned2010-05-31T03:32:13Z-
dc.date.available2010-05-31T03:32:13Z-
dc.date.issued2008en_HK
dc.identifier.citationEngineering Structures, 2008, v. 30 n. 10, p. 2613-2630en_HK
dc.identifier.issn0141-0296en_HK
dc.identifier.urihttp://hdl.handle.net/10722/58541-
dc.description.abstractThis paper reports the results of an experimental and numerical investigation on the non-linear behaviour and load-carrying capacity of CFRP-strengthened cold-formed steel lipped channel columns, devoting special attention to their local-plate and/or distortional buckling behaviours. A preliminary GBT-based study concerning the column elastic buckling behaviour is performed, focusing on determining the (i) sheet location (web, flanges and/or lips) and (ii) carbon fibre orientation (longitudinal, transverse or inclined) that optimize the strengthening procedure (enhanced buckling behaviour vs. cost). Then, an experimental programme comprising a total of 19 short and long fixed-ended lipped channel columns is described. The columns were strengthened with carbon fibre sheets (CFS) bonded at different outer surface locations (web, flanges or lips) and having the fibres oriented either longitudinally or transversally - since the aim of the study is to assess the influence of the CFS on the column structural response, bare steel specimens were also tested. The experimental results, which consist of non-linear equilibrium paths (applied load vs. axial shortening) and ultimate strength values (most of them associated with local-plate and/or distortional failure mechanisms), are subsequently used to calibrate and validate geometrically and physically non-linear numerical analyses based on shell finite element models and carried out in the code Abaqus. Finally, on the basis of both the experimental and numerical results obtained, some relevant conclusions are drawn concerning the most effective CFS location and fibre orientation to strengthen lipped channel steel columns affected by local-plate and/or distortional buckling. © 2008 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstructen_HK
dc.relation.ispartofEngineering Structuresen_HK
dc.subjectBuckling behaviouren_HK
dc.subjectCarbon fibre sheetsen_HK
dc.subjectCold-formed steel columnsen_HK
dc.subjectDistortional failureen_HK
dc.subjectExperimental testsen_HK
dc.subjectFEM simulationen_HK
dc.subjectFRP-strengtheningen_HK
dc.subjectGBT analysisen_HK
dc.subjectLoad-carrying capacityen_HK
dc.subjectLocal-plate failureen_HK
dc.subjectPost-buckling behaviouren_HK
dc.titleNon-linear behaviour and load-carrying capacity of CFRP-strengthened lipped channel steel columnsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0141-0296&volume=30&spage=2613&epage=2630&date=2008&atitle=Non-linear+Behaviour+and+Load-carrying+Capacity+of+CFRP-strengthened+Lipped+Channel+Steel+Columnsen_HK
dc.identifier.emailYoung, B:young@hku.hken_HK
dc.identifier.authorityYoung, B=rp00208en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.engstruct.2008.02.010en_HK
dc.identifier.scopuseid_2-s2.0-52749092744en_HK
dc.identifier.hkuros165392en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-52749092744&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume30en_HK
dc.identifier.issue10en_HK
dc.identifier.spage2613en_HK
dc.identifier.epage2630en_HK
dc.identifier.isiWOS:000260749800003-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridSilvestre, N=6603834610en_HK
dc.identifier.scopusauthoridYoung, B=7402192398en_HK
dc.identifier.scopusauthoridCamotim, D=7003404571en_HK

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