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Article: Length of critical region for confinement steel in limited ductility high-strength reinforced concrete columns

TitleLength of critical region for confinement steel in limited ductility high-strength reinforced concrete columns
Authors
KeywordsColumn
Critical region length
Curvature
High-strength concrete
Limited ductility
Issue Date2009
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstruct
Citation
Engineering Structures, 2009, v. 31 n. 12, p. 2896-2908 How to Cite?
AbstractThe length of the critical region is one of the essential parameters in designing earthquake resistant structures where adequate transverse steel needs to be provided to confine the concrete core and subsequently to avert brittle failure under large inelastic deformation/curvature. In countries having high seismic risk such as China, Japan, New Zealand, USA etc.; guidelines have been provided in their reinforced concrete (RC) design codes for the design of fully ductile RC columns/piers. Nevertheless, in countries having low to moderate seismic risks, RC columns/piers can be designed for limited ductility, the design guidelines for which are very scarce. From the experimental tests carried out by the authors on limited ductility high-strength RC columns, it was found that this type of column/pier can be confined effectively with less confinement steel over a shorter extent of critical region compared with the existing code provisions for ductile columns/piers. In this paper, the length of the critical region in which the properly enhanced amount of confinement steel should be installed is investigated by two methods, which are denoted as direct methods in this paper. The evaluated critical region lengths have also been compared with those obtained by other researchers and the New Zealand Code. © 2009 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/71208
ISSN
2015 Impact Factor: 1.893
2015 SCImago Journal Rankings: 1.813
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of the Hong Kong Special Administrative Region, ChinaHKU 7012/98E
Funding Information:

The work described in this paper has been substantially supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. HKU 7012/98E). Technical supports for the experimental tests provided by the laboratory staff of the Department of Civil Engineering, The University of Hong Kong, are gratefully acknowledged.

References
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DC FieldValueLanguage
dc.contributor.authorPam, HJen_HK
dc.contributor.authorHo, JCMen_HK
dc.date.accessioned2010-09-06T06:29:54Z-
dc.date.available2010-09-06T06:29:54Z-
dc.date.issued2009en_HK
dc.identifier.citationEngineering Structures, 2009, v. 31 n. 12, p. 2896-2908en_HK
dc.identifier.issn0141-0296en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71208-
dc.description.abstractThe length of the critical region is one of the essential parameters in designing earthquake resistant structures where adequate transverse steel needs to be provided to confine the concrete core and subsequently to avert brittle failure under large inelastic deformation/curvature. In countries having high seismic risk such as China, Japan, New Zealand, USA etc.; guidelines have been provided in their reinforced concrete (RC) design codes for the design of fully ductile RC columns/piers. Nevertheless, in countries having low to moderate seismic risks, RC columns/piers can be designed for limited ductility, the design guidelines for which are very scarce. From the experimental tests carried out by the authors on limited ductility high-strength RC columns, it was found that this type of column/pier can be confined effectively with less confinement steel over a shorter extent of critical region compared with the existing code provisions for ductile columns/piers. In this paper, the length of the critical region in which the properly enhanced amount of confinement steel should be installed is investigated by two methods, which are denoted as direct methods in this paper. The evaluated critical region lengths have also been compared with those obtained by other researchers and the New Zealand Code. © 2009 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstructen_HK
dc.relation.ispartofEngineering Structuresen_HK
dc.subjectColumnen_HK
dc.subjectCritical region lengthen_HK
dc.subjectCurvatureen_HK
dc.subjectHigh-strength concreteen_HK
dc.subjectLimited ductilityen_HK
dc.titleLength of critical region for confinement steel in limited ductility high-strength reinforced concrete columnsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0141-0296&volume=31&issue=12&spage=2896&epage=2908&date=2009&atitle=Length+of+critical+region+for+confinement+steel+in+limited+ductility+high-strength+reinforced+concrete+columnsen_HK
dc.identifier.emailPam, HJ:pamhoatjoen@hku.hken_HK
dc.identifier.emailHo, JCM:johnny.ho@hku.hken_HK
dc.identifier.authorityPam, HJ=rp00071en_HK
dc.identifier.authorityHo, JCM=rp00070en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.engstruct.2009.07.015en_HK
dc.identifier.scopuseid_2-s2.0-70449526206en_HK
dc.identifier.hkuros159842en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-70449526206&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume31en_HK
dc.identifier.issue12en_HK
dc.identifier.spage2896en_HK
dc.identifier.epage2908en_HK
dc.identifier.eissn1873-7323-
dc.identifier.isiWOS:000272428900010-
dc.publisher.placeUnited Kingdomen_HK
dc.relation.projectRational ductility detailing for high strength reinforced concrete columns in Hong Kong-
dc.identifier.scopusauthoridPam, HJ=6602976141en_HK
dc.identifier.scopusauthoridHo, JCM=24831880500en_HK
dc.identifier.citeulike5341601-

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