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Article: Ultimate concrete strain and equivalent rectangular stress block for design of high-strength concrete beams

TitleUltimate concrete strain and equivalent rectangular stress block for design of high-strength concrete beams
Authors
KeywordsAnalysis
BS 8110
Concrete beams
Design
Flexural properties
High strength concrete
Reinforcement
Strain
Issue Date2002
PublisherStructural Engineers Trading Organisation Ltd. The Journal's web site is located at http://www.istructe.org.uk/thestructuralengineer/index.asp
Citation
Structural Engineer, 2002, v. 80 n. 16, p. 26-32 How to Cite?
AbstractHigh- and normal-strength concretes have different stress-strain characteristics and therefore high-strength concrete beams should not be designed in the same way as normal-strength concrete beams. In this study, the non-linear flexural behaviour of high-strength concrete beams has been analysed and compared to that of normal-strength concrete beams. It was revealed that because of the gradual change in stress-strain characteristics of the concrete, the ultimate concrete strain varies significantly with the concrete grade. Moreover, the tension reinforcement does not always yield at the point of peak moment and thus the maximum compressive strain of the concrete when the tension reinforcement yields, which is needed for evaluation of the balanced steel ratio, is not the same as the ultimate concrete strain. Nevertheless, compromised values of ultimate concrete strain that can be used for evaluation of both flexural strength and balanced steel ratio without producing significant errors have been derived. Lastly, the existing concrete stress-strain curve given in the British Standard BS 8110 for beam design has been reviewed and modification to cater for high-strength concrete proposed.
Persistent Identifierhttp://hdl.handle.net/10722/71325
ISSN
2015 SCImago Journal Rankings: 0.169
References

 

DC FieldValueLanguage
dc.contributor.authorHo, JCMen_HK
dc.contributor.authorKwan, AKHen_HK
dc.contributor.authorPam, HJen_HK
dc.date.accessioned2010-09-06T06:30:58Z-
dc.date.available2010-09-06T06:30:58Z-
dc.date.issued2002en_HK
dc.identifier.citationStructural Engineer, 2002, v. 80 n. 16, p. 26-32en_HK
dc.identifier.issn1466-5123en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71325-
dc.description.abstractHigh- and normal-strength concretes have different stress-strain characteristics and therefore high-strength concrete beams should not be designed in the same way as normal-strength concrete beams. In this study, the non-linear flexural behaviour of high-strength concrete beams has been analysed and compared to that of normal-strength concrete beams. It was revealed that because of the gradual change in stress-strain characteristics of the concrete, the ultimate concrete strain varies significantly with the concrete grade. Moreover, the tension reinforcement does not always yield at the point of peak moment and thus the maximum compressive strain of the concrete when the tension reinforcement yields, which is needed for evaluation of the balanced steel ratio, is not the same as the ultimate concrete strain. Nevertheless, compromised values of ultimate concrete strain that can be used for evaluation of both flexural strength and balanced steel ratio without producing significant errors have been derived. Lastly, the existing concrete stress-strain curve given in the British Standard BS 8110 for beam design has been reviewed and modification to cater for high-strength concrete proposed.en_HK
dc.languageengen_HK
dc.publisherStructural Engineers Trading Organisation Ltd. The Journal's web site is located at http://www.istructe.org.uk/thestructuralengineer/index.aspen_HK
dc.relation.ispartofStructural Engineeren_HK
dc.subjectAnalysisen_HK
dc.subjectBS 8110en_HK
dc.subjectConcrete beamsen_HK
dc.subjectDesignen_HK
dc.subjectFlexural propertiesen_HK
dc.subjectHigh strength concreteen_HK
dc.subjectReinforcementen_HK
dc.subjectStrainen_HK
dc.titleUltimate concrete strain and equivalent rectangular stress block for design of high-strength concrete beamsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1466-5123&volume=80&issue=16&spage=26&epage=32&date=2002&atitle=Ultimate+Concrete+Strain+and+Equivalent+Rectangular+Stress+Block+for+Design+of+High-strength+Concrete+Beamsen_HK
dc.identifier.emailHo, JCM:johnny.ho@hku.hken_HK
dc.identifier.emailKwan, AKH:khkwan@hkucc.hku.hken_HK
dc.identifier.emailPam, HJ:pamhoatjoen@hku.hken_HK
dc.identifier.authorityHo, JCM=rp00070en_HK
dc.identifier.authorityKwan, AKH=rp00127en_HK
dc.identifier.authorityPam, HJ=rp00071en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0037143467en_HK
dc.identifier.hkuros144928en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037143467&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume80en_HK
dc.identifier.issue16en_HK
dc.identifier.spage26en_HK
dc.identifier.epage32en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridHo, JCM=24831880500en_HK
dc.identifier.scopusauthoridKwan, AKH=7101738204en_HK
dc.identifier.scopusauthoridPam, HJ=6602976141en_HK

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