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Article: Normalised rotation capacity for deformability evaluation of high-performance concrete beams

TitleNormalised rotation capacity for deformability evaluation of high-performance concrete beams
Authors
KeywordsBeams
Curvature
Deformability
High-strength concrete
Reinforced concrete
Rotation capacity
Issue Date2010
PublisherTechno-Press. The Journal's web site is located at http://technop.kaist.ac.kr/?journal=eas&subpage=1#
Citation
Earthquake And Structures, 2010, v. 1 n. 3, p. 269-287 How to Cite?
AbstractHigh-strength concrete (HSC) is becoming more popular in the construction of beams and columns of tall buildings because of its higher stiffness and strength-to-weight ratio. However, as HSC is more brittle than normal-strength concrete (NSC), it may adversely affect the flexural ductility and deformability of concrete members. Extended from a series of theoretical study conducted on flexural ductility of concrete beams, the authors would in this paper investigate the effects of some critical factors including the degree of reinforcement, confining pressure, concrete and steel yield strength on the flexural deformability of NSC and HSC beams. The deformability, expressed herein in terms of normalised rotation capacity defined as the product of ultimate curvature and effective depth, is investigated by a parametric study using nonlinear moment-curvature analysis. From the results, it is evident that the deformability of concrete beams increases as the degree of reinforcement decreases and/or confining pressure increases. However, the effects of concrete and steel yield strength are more complicated and dependent on other factors. Quantitative analysis of all these effects on deformability of beams has been carried out and formulas for direct deformability evaluation are developed. Lastly, the proposed formulas are compared with available test results to verify its applicability.
Persistent Identifierhttp://hdl.handle.net/10722/124569
ISSN
2015 Impact Factor: 0.789
2015 SCImago Journal Rankings: 0.587
References

 

DC FieldValueLanguage
dc.contributor.authorZhou, KJHen_HK
dc.contributor.authorHo, JCMen_HK
dc.contributor.authorSu, RKLen_HK
dc.date.accessioned2010-10-31T10:41:51Z-
dc.date.available2010-10-31T10:41:51Z-
dc.date.issued2010en_HK
dc.identifier.citationEarthquake And Structures, 2010, v. 1 n. 3, p. 269-287en_HK
dc.identifier.issn2092-7614en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124569-
dc.description.abstractHigh-strength concrete (HSC) is becoming more popular in the construction of beams and columns of tall buildings because of its higher stiffness and strength-to-weight ratio. However, as HSC is more brittle than normal-strength concrete (NSC), it may adversely affect the flexural ductility and deformability of concrete members. Extended from a series of theoretical study conducted on flexural ductility of concrete beams, the authors would in this paper investigate the effects of some critical factors including the degree of reinforcement, confining pressure, concrete and steel yield strength on the flexural deformability of NSC and HSC beams. The deformability, expressed herein in terms of normalised rotation capacity defined as the product of ultimate curvature and effective depth, is investigated by a parametric study using nonlinear moment-curvature analysis. From the results, it is evident that the deformability of concrete beams increases as the degree of reinforcement decreases and/or confining pressure increases. However, the effects of concrete and steel yield strength are more complicated and dependent on other factors. Quantitative analysis of all these effects on deformability of beams has been carried out and formulas for direct deformability evaluation are developed. Lastly, the proposed formulas are compared with available test results to verify its applicability.en_HK
dc.languageengen_HK
dc.publisherTechno-Press. The Journal's web site is located at http://technop.kaist.ac.kr/?journal=eas&subpage=1#en_HK
dc.relation.ispartofEarthquake and Structuresen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectBeamsen_HK
dc.subjectCurvatureen_HK
dc.subjectDeformabilityen_HK
dc.subjectHigh-strength concreteen_HK
dc.subjectReinforced concreteen_HK
dc.subjectRotation capacityen_HK
dc.titleNormalised rotation capacity for deformability evaluation of high-performance concrete beamsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=2092-7614&volume=1&issue=3&spage=269&epage=287&date=2010&atitle=Normalised+rotation+capacity+for+deformability+evaluation+of+high-performance+concrete+beams-
dc.identifier.emailHo, JCM:johnny.ho@hku.hken_HK
dc.identifier.emailSu, RKL:klsu@hkucc.hku.hken_HK
dc.identifier.authorityHo, JCM=rp00070en_HK
dc.identifier.authoritySu, RKL=rp00072en_HK
dc.description.naturepostprint-
dc.identifier.scopuseid_2-s2.0-79952860775en_HK
dc.identifier.hkuros176108en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79952860775&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume1en_HK
dc.identifier.issue3en_HK
dc.identifier.spage269en_HK
dc.identifier.epage287en_HK
dc.publisher.placeKorea, Republic ofen_HK
dc.identifier.scopusauthoridZhou, KJH=37073984000en_HK
dc.identifier.scopusauthoridHo, JCM=24831880500en_HK
dc.identifier.scopusauthoridSu, RKL=7102627096en_HK

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