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Article: Effects of strain hardening of reinforcement on flexural strength and ductility of reinforced concrete columns

TitleEffects of strain hardening of reinforcement on flexural strength and ductility of reinforced concrete columns
Authors
Issue Date2011
PublisherJohn Wiley & Sons Ltd. The Journal's web site is located at http://www.interscience.wiley.com/jpages/1541-7794/
Citation
Structural Design Of Tall And Special Buildings, 2011, v. 20 n. 7, p. 784-800 How to Cite?
AbstractIn the evaluation of flexural strength of reinforced concrete (RC) columns, the elastic-perfectly plastic constitutive model is generally used for steel reinforcement, which ignores the strain hardening effect. While some engineers believe that the flexural strength so obtained is on the safe side, others are concerned that underestimation of member strength could lead to inaccurate prediction of overall structural behaviour especially under extreme events. In any case, better understanding of the possible over-strength and its effects on flexural ductility and failure mechanism is necessary. In this paper, the effects of strain hardening of reinforcement on the flexural strength and ductility of reinforced normal- and high-strength concrete columns are studied based on rigorous full-range moment-curvature analysis. The study has identified if and how various parameters affect the strain hardening effect, which include axial load ratio, concrete strength, confining stress, reinforcement ratio and the tensile-strength-to-yield-stress ratio of steel. The effects of strain hardening can be quite significant for RC columns under relatively low axial load and relatively high confining stress. Copyright © 2009 John Wiley & Sons, Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/150620
ISSN
2015 Impact Factor: 0.898
2015 SCImago Journal Rankings: 0.690
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBai, ZZen_US
dc.contributor.authorAu, FTKen_US
dc.date.accessioned2012-06-26T06:06:11Z-
dc.date.available2012-06-26T06:06:11Z-
dc.date.issued2011en_US
dc.identifier.citationStructural Design Of Tall And Special Buildings, 2011, v. 20 n. 7, p. 784-800en_US
dc.identifier.issn1541-7794en_US
dc.identifier.urihttp://hdl.handle.net/10722/150620-
dc.description.abstractIn the evaluation of flexural strength of reinforced concrete (RC) columns, the elastic-perfectly plastic constitutive model is generally used for steel reinforcement, which ignores the strain hardening effect. While some engineers believe that the flexural strength so obtained is on the safe side, others are concerned that underestimation of member strength could lead to inaccurate prediction of overall structural behaviour especially under extreme events. In any case, better understanding of the possible over-strength and its effects on flexural ductility and failure mechanism is necessary. In this paper, the effects of strain hardening of reinforcement on the flexural strength and ductility of reinforced normal- and high-strength concrete columns are studied based on rigorous full-range moment-curvature analysis. The study has identified if and how various parameters affect the strain hardening effect, which include axial load ratio, concrete strength, confining stress, reinforcement ratio and the tensile-strength-to-yield-stress ratio of steel. The effects of strain hardening can be quite significant for RC columns under relatively low axial load and relatively high confining stress. Copyright © 2009 John Wiley & Sons, Ltd.en_US
dc.languageengen_US
dc.publisherJohn Wiley & Sons Ltd. The Journal's web site is located at http://www.interscience.wiley.com/jpages/1541-7794/en_US
dc.relation.ispartofStructural Design of Tall and Special Buildingsen_US
dc.titleEffects of strain hardening of reinforcement on flexural strength and ductility of reinforced concrete columnsen_US
dc.typeArticleen_US
dc.identifier.emailAu, FTK:francis.au@hku.hken_US
dc.identifier.authorityAu, FTK=rp00083en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1002/tal.554en_US
dc.identifier.scopuseid_2-s2.0-80755169417en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80755169417&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume20en_US
dc.identifier.issue7en_US
dc.identifier.spage784en_US
dc.identifier.epage800en_US
dc.identifier.isiWOS:000296504300004-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridBai, ZZ=14619012100en_US
dc.identifier.scopusauthoridAu, FTK=7005204072en_US

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