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Article: Ductility of symmetrically reinforced concrete columns

TitleDuctility of symmetrically reinforced concrete columns
Authors
Issue Date2009
PublisherThomas Telford Ltd. The Journal's web site is located at http://www.concrete-research.com
Citation
Magazine Of Concrete Research, 2009, v. 61 n. 5, p. 345-357 How to Cite?
AbstractA theoretical ductility study based on full-range flexural behaviour is carried out for symmetrically reinforced concrete columns cast of normal- and high-strength concrete, with the axial load covering both tension and compression. The analysis employs the actual stress-strain curves and takes into account the stress-path depen-dence of concrete and steel reinforcement. From the complete moment-curvature curve obtained, the moment capacity, flexural ductility, balanced failure load, variations of neutral axis depth and steel stress are studied. In particular, the effects of axial load and confinement are evaluated. Generally speaking, the higher the axial load, the steeper is the descending part of the moment-curvature curve and the lower is the flexural ductility. Confine-ment is observed to help maintain the resisting moment up to a much larger curvature at the post-peak stage and therefore it benefits the flexural ductility. Its benefit to the moment capacity is, however, minor. The effect of concrete tensile strength is only observed for columns under relatively low axial load at service stage and has virtually no effect on moment capacity and flexural ductility.
Persistent Identifierhttp://hdl.handle.net/10722/58488
ISSN
2015 Impact Factor: 1.227
2015 SCImago Journal Rankings: 0.955
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBai, ZZen_HK
dc.contributor.authorAu, FTKen_HK
dc.date.accessioned2010-05-31T03:31:19Z-
dc.date.available2010-05-31T03:31:19Z-
dc.date.issued2009en_HK
dc.identifier.citationMagazine Of Concrete Research, 2009, v. 61 n. 5, p. 345-357en_HK
dc.identifier.issn0024-9831en_HK
dc.identifier.urihttp://hdl.handle.net/10722/58488-
dc.description.abstractA theoretical ductility study based on full-range flexural behaviour is carried out for symmetrically reinforced concrete columns cast of normal- and high-strength concrete, with the axial load covering both tension and compression. The analysis employs the actual stress-strain curves and takes into account the stress-path depen-dence of concrete and steel reinforcement. From the complete moment-curvature curve obtained, the moment capacity, flexural ductility, balanced failure load, variations of neutral axis depth and steel stress are studied. In particular, the effects of axial load and confinement are evaluated. Generally speaking, the higher the axial load, the steeper is the descending part of the moment-curvature curve and the lower is the flexural ductility. Confine-ment is observed to help maintain the resisting moment up to a much larger curvature at the post-peak stage and therefore it benefits the flexural ductility. Its benefit to the moment capacity is, however, minor. The effect of concrete tensile strength is only observed for columns under relatively low axial load at service stage and has virtually no effect on moment capacity and flexural ductility.en_HK
dc.languageengen_HK
dc.publisherThomas Telford Ltd. The Journal's web site is located at http://www.concrete-research.comen_HK
dc.relation.ispartofMagazine of Concrete Researchen_HK
dc.rightsMagazine of Concrete Research. Copyright © Thomas Telford Ltd.en_HK
dc.titleDuctility of symmetrically reinforced concrete columnsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0024-9831&volume=61&issue=5&spage=345&epage=357&date=2009&atitle=Ductility+of+symmetrically+reinforced+concrete+columnsen_HK
dc.identifier.emailAu, FTK:francis.au@hku.hken_HK
dc.identifier.authorityAu, FTK=rp00083en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1680/macr.2008.00149en_HK
dc.identifier.scopuseid_2-s2.0-67649122839en_HK
dc.identifier.hkuros158985en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-67649122839&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume61en_HK
dc.identifier.issue5en_HK
dc.identifier.spage345en_HK
dc.identifier.epage357en_HK
dc.identifier.isiWOS:000266024000004-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridBai, ZZ=14619012100en_HK
dc.identifier.scopusauthoridAu, FTK=7005204072en_HK

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