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Article: Experimental investigation of cold-formed steel built-up closed section columns with web stiffeners

TitleExperimental investigation of cold-formed steel built-up closed section columns with web stiffeners
Authors
KeywordsBucking
Built-up column
Closed section
Cold-formed steel
Experiment
Web stiffener
Issue Date2018
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jcsr
Citation
Journal of Constructional Steel Research, 2018, v. 147, p. 380-392 How to Cite?
AbstractThis paper presents an experimental investigation conducted on cold-formed steel built-up closed section columns with web stiffeners. To fabricate a built-up closed section, the single open sections were formed by brake press operation with high strength steel plate of thickness of 0.48 and 1.0 mm, then two identical sections were connected together face-to-face by self-tapping screws. After the measurements of material properties and the initial geometric imperfections were made, the built-up closed section specimens with inward or outward stiffeners at the web were tested between fixed-end boundary conditions with various column lengths ranging from 300 to 3200 mm. The tested specimens were failed by local buckling and interaction between local and flexural buckling. The ultimate strengths of the specimens were used to compare with the column strengths predicted using direct strength method, which is adopted in the North American Specification and Australian/New Zealand Standard for cold-formed steel structures. In addition, a reliability analysis was performed for this design method to access its reliability with cold-formed steel built-up closed section compression members. The results show that the direct strength method is applicable for the design calculation of cold-formed steel built-up closed section compression members with web stiffeners.
Persistent Identifierhttp://hdl.handle.net/10722/259197
ISSN
2017 Impact Factor: 2.509
2015 SCImago Journal Rankings: 1.746

 

DC FieldValueLanguage
dc.contributor.authorZhang, J-
dc.contributor.authorYoung, B-
dc.date.accessioned2018-09-03T04:03:01Z-
dc.date.available2018-09-03T04:03:01Z-
dc.date.issued2018-
dc.identifier.citationJournal of Constructional Steel Research, 2018, v. 147, p. 380-392-
dc.identifier.issn0143-974X-
dc.identifier.urihttp://hdl.handle.net/10722/259197-
dc.description.abstractThis paper presents an experimental investigation conducted on cold-formed steel built-up closed section columns with web stiffeners. To fabricate a built-up closed section, the single open sections were formed by brake press operation with high strength steel plate of thickness of 0.48 and 1.0 mm, then two identical sections were connected together face-to-face by self-tapping screws. After the measurements of material properties and the initial geometric imperfections were made, the built-up closed section specimens with inward or outward stiffeners at the web were tested between fixed-end boundary conditions with various column lengths ranging from 300 to 3200 mm. The tested specimens were failed by local buckling and interaction between local and flexural buckling. The ultimate strengths of the specimens were used to compare with the column strengths predicted using direct strength method, which is adopted in the North American Specification and Australian/New Zealand Standard for cold-formed steel structures. In addition, a reliability analysis was performed for this design method to access its reliability with cold-formed steel built-up closed section compression members. The results show that the direct strength method is applicable for the design calculation of cold-formed steel built-up closed section compression members with web stiffeners.-
dc.languageeng-
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jcsr-
dc.relation.ispartofJournal of Constructional Steel Research-
dc.subjectBucking-
dc.subjectBuilt-up column-
dc.subjectClosed section-
dc.subjectCold-formed steel-
dc.subjectExperiment-
dc.subjectWeb stiffener-
dc.titleExperimental investigation of cold-formed steel built-up closed section columns with web stiffeners-
dc.typeArticle-
dc.identifier.emailYoung, B: young@hku.hk-
dc.identifier.authorityYoung, B=rp00208-
dc.identifier.doi10.1016/j.jcsr.2018.04.008-
dc.identifier.hkuros288998-
dc.identifier.volume147-
dc.identifier.spage380-
dc.identifier.epage392-
dc.publisher.placeUnited Kingdom-

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