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Article: Flexural ductility design of high-strength concrete beams

TitleFlexural ductility design of high-strength concrete beams
Authors
KeywordsCurvature Ductility Factor
Flexural Ductility Design
Reinforced Concrete Beams
Reinforcement Ratios
Seismic Design
Issue Date2013
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, 2013, v. 22 n. 6, p. 521-542 How to Cite?
AbstractIn the seismic design of a reinforced concrete (RC) structure, it is necessary to provide not only sufficient strength, but also adequate flexural ductility. This is particularly important to the design of RC beams cast of high-strength concrete that is inherently more brittle. Eurocode EN1998-1 directly specifies such minimum flexural ductility. To provide adequate flexural ductility to RC beams, Chinese code GB50011 limits the normalised depth of simplified rectangular stress block at peak resisting moment, whereas American code ACI 318-08 requires that the tension steel strain at peak resisting moment shall not be smaller than 0.004. The essential parameters identified for effective flexural ductility design of RC beams include the maximum difference of tension and compression reinforcement ratios and maximum normalised neutral axis depth at peak resisting moment, as they help to guarantee various flexural ductility requirements. Their relationship with the flexural ductility is studied using a rigorous full-range moment-curvature analysis procedure. Empirical formulae and tables are also developed to facilitate flexural ductility design of RC beams. A comparison shows that the allowable differences of tension and compression ratios may be smaller than those specified in Eurocode 8 particularly for those cast of high-strength concrete. © 2011 John Wiley & Sons, Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/150583
ISSN
2015 Impact Factor: 0.898
2015 SCImago Journal Rankings: 0.690
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorBai, ZZen_US
dc.contributor.authorAu, FTKen_US
dc.date.accessioned2012-06-26T06:05:55Z-
dc.date.available2012-06-26T06:05:55Z-
dc.date.issued2013en_US
dc.identifier.citationStructural Design Of Tall And Special Buildings, 2013, v. 22 n. 6, p. 521-542en_US
dc.identifier.issn1541-7794en_US
dc.identifier.urihttp://hdl.handle.net/10722/150583-
dc.description.abstractIn the seismic design of a reinforced concrete (RC) structure, it is necessary to provide not only sufficient strength, but also adequate flexural ductility. This is particularly important to the design of RC beams cast of high-strength concrete that is inherently more brittle. Eurocode EN1998-1 directly specifies such minimum flexural ductility. To provide adequate flexural ductility to RC beams, Chinese code GB50011 limits the normalised depth of simplified rectangular stress block at peak resisting moment, whereas American code ACI 318-08 requires that the tension steel strain at peak resisting moment shall not be smaller than 0.004. The essential parameters identified for effective flexural ductility design of RC beams include the maximum difference of tension and compression reinforcement ratios and maximum normalised neutral axis depth at peak resisting moment, as they help to guarantee various flexural ductility requirements. Their relationship with the flexural ductility is studied using a rigorous full-range moment-curvature analysis procedure. Empirical formulae and tables are also developed to facilitate flexural ductility design of RC beams. A comparison shows that the allowable differences of tension and compression ratios may be smaller than those specified in Eurocode 8 particularly for those cast of high-strength concrete. © 2011 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.subjectCurvature Ductility Factoren_US
dc.subjectFlexural Ductility Designen_US
dc.subjectReinforced Concrete Beamsen_US
dc.subjectReinforcement Ratiosen_US
dc.subjectSeismic Designen_US
dc.titleFlexural ductility design of high-strength concrete beamsen_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.714en_US
dc.identifier.scopuseid_2-s2.0-84875257285en_US
dc.identifier.hkuros221130-
dc.identifier.isiWOS:000316618900005-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridBai, ZZ=14619012100en_US
dc.identifier.scopusauthoridAu, FTK=7005204072en_US

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