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Article: Length of critical region for confinement steel in limited ductility high-strength reinforced concrete columns
Title | Length of critical region for confinement steel in limited ductility high-strength reinforced concrete columns | ||||
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Authors | |||||
Keywords | Column Critical region length Curvature High-strength concrete Limited ductility | ||||
Issue Date | 2009 | ||||
Publisher | Pergamon. 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? | ||||
Abstract | The 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 Identifier | http://hdl.handle.net/10722/71208 | ||||
ISSN | 2023 Impact Factor: 5.6 2023 SCImago Journal Rankings: 1.661 | ||||
ISI Accession Number ID |
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 Field | Value | Language |
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dc.contributor.author | Pam, HJ | en_HK |
dc.contributor.author | Ho, JCM | en_HK |
dc.date.accessioned | 2010-09-06T06:29:54Z | - |
dc.date.available | 2010-09-06T06:29:54Z | - |
dc.date.issued | 2009 | en_HK |
dc.identifier.citation | Engineering Structures, 2009, v. 31 n. 12, p. 2896-2908 | en_HK |
dc.identifier.issn | 0141-0296 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/71208 | - |
dc.description.abstract | The 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.language | eng | en_HK |
dc.publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstruct | en_HK |
dc.relation.ispartof | Engineering Structures | en_HK |
dc.subject | Column | en_HK |
dc.subject | Critical region length | en_HK |
dc.subject | Curvature | en_HK |
dc.subject | High-strength concrete | en_HK |
dc.subject | Limited ductility | en_HK |
dc.title | Length of critical region for confinement steel in limited ductility high-strength reinforced concrete columns | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://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+columns | en_HK |
dc.identifier.email | Pam, HJ:pamhoatjoen@hku.hk | en_HK |
dc.identifier.email | Ho, JCM:johnny.ho@hku.hk | en_HK |
dc.identifier.authority | Pam, HJ=rp00071 | en_HK |
dc.identifier.authority | Ho, JCM=rp00070 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.engstruct.2009.07.015 | en_HK |
dc.identifier.scopus | eid_2-s2.0-70449526206 | en_HK |
dc.identifier.hkuros | 159842 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-70449526206&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 31 | en_HK |
dc.identifier.issue | 12 | en_HK |
dc.identifier.spage | 2896 | en_HK |
dc.identifier.epage | 2908 | en_HK |
dc.identifier.eissn | 1873-7323 | - |
dc.identifier.isi | WOS:000272428900010 | - |
dc.publisher.place | United Kingdom | en_HK |
dc.relation.project | Rational ductility detailing for high strength reinforced concrete columns in Hong Kong | - |
dc.identifier.scopusauthorid | Pam, HJ=6602976141 | en_HK |
dc.identifier.scopusauthorid | Ho, JCM=24831880500 | en_HK |
dc.identifier.citeulike | 5341601 | - |
dc.identifier.issnl | 0141-0296 | - |