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Article: Extent of critical region and limited ductility design of high-strength reinforced concrete columns for hong kong practice

TitleExtent of critical region and limited ductility design of high-strength reinforced concrete columns for hong kong practice
Authors
KeywordsColumn
Column Rotation
Confinement Steel
Critical Region
Curvature
High-Strength Concrete
Limited Ductility
Plastic Hinge Length
Issue Date2004
PublisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.asp
Citation
Transactions Hong Kong Institution Of Engineers, 2004, v. 11 n. 3, p. 17-28 How to Cite?
AbstractExtent of critical region, which is usually referred to as plastic hinge length, of high-strength reinforced concrete (HSRC) columns, where extensive inelastic damages might occur under seismic loading, was experimentally investigated. A total of 6 HSRC columns that can be grouped into 2 series or 3 pairs, were tested under various axial load levels as well as reversed cyclic inelastic displacement excursions simulating seismic loading. The first series of columns contained transverse steel designed according to the shear resistance requirement of BS 8110, while the second series, representing limited ductile columns, to the authors' proposed equation. From test observation, progressive development and formation of the critical region in these columns were discussed. The extents of these critical regions were subsequently evaluated rigorously using direct (by physical observation or measured column curvature profiles) and indirect (by back calculation using an idealised column curvature profile) methods. From the results, it was evident that: (1) the critical region developed starting from the point of maximum bending moment over a finite length along the concrete spoiling area, (2) the extent of critical region was largely influenced by volumetric ratio of transverse steel, concrete strength and axial load level, (3) the extents of critical region evaluated using both methods were in good agreement, (4) the HSRC columns containing transverse steel calculated using the authors' proposed equation proved to behave in a limited ductile manner, and the extent of their critical regions was smaller than that of the counterpart columns designed complying with BS 8110. Finally, some guidelines for the design of limited ductile HSRC columns were proposed.
DescriptionAwarded the HKIE Transactions Prize 2005
Persistent Identifierhttp://hdl.handle.net/10722/150493
ISSN
2015 SCImago Journal Rankings: 0.145
References

 

DC FieldValueLanguage
dc.contributor.authorHo, JCMen_US
dc.contributor.authorPam, HJen_US
dc.date.accessioned2012-06-26T06:05:09Z-
dc.date.available2012-06-26T06:05:09Z-
dc.date.issued2004en_US
dc.identifier.citationTransactions Hong Kong Institution Of Engineers, 2004, v. 11 n. 3, p. 17-28en_US
dc.identifier.issn1023-697Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/150493-
dc.descriptionAwarded the HKIE Transactions Prize 2005-
dc.description.abstractExtent of critical region, which is usually referred to as plastic hinge length, of high-strength reinforced concrete (HSRC) columns, where extensive inelastic damages might occur under seismic loading, was experimentally investigated. A total of 6 HSRC columns that can be grouped into 2 series or 3 pairs, were tested under various axial load levels as well as reversed cyclic inelastic displacement excursions simulating seismic loading. The first series of columns contained transverse steel designed according to the shear resistance requirement of BS 8110, while the second series, representing limited ductile columns, to the authors' proposed equation. From test observation, progressive development and formation of the critical region in these columns were discussed. The extents of these critical regions were subsequently evaluated rigorously using direct (by physical observation or measured column curvature profiles) and indirect (by back calculation using an idealised column curvature profile) methods. From the results, it was evident that: (1) the critical region developed starting from the point of maximum bending moment over a finite length along the concrete spoiling area, (2) the extent of critical region was largely influenced by volumetric ratio of transverse steel, concrete strength and axial load level, (3) the extents of critical region evaluated using both methods were in good agreement, (4) the HSRC columns containing transverse steel calculated using the authors' proposed equation proved to behave in a limited ductile manner, and the extent of their critical regions was smaller than that of the counterpart columns designed complying with BS 8110. Finally, some guidelines for the design of limited ductile HSRC columns were proposed.en_US
dc.languageengen_US
dc.publisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.aspen_US
dc.relation.ispartofTransactions Hong Kong Institution of Engineersen_US
dc.subjectColumnen_US
dc.subjectColumn Rotationen_US
dc.subjectConfinement Steelen_US
dc.subjectCritical Regionen_US
dc.subjectCurvatureen_US
dc.subjectHigh-Strength Concreteen_US
dc.subjectLimited Ductilityen_US
dc.subjectPlastic Hinge Lengthen_US
dc.titleExtent of critical region and limited ductility design of high-strength reinforced concrete columns for hong kong practiceen_US
dc.typeArticleen_US
dc.identifier.emailHo, JCM:johnny.ho@hku.hken_US
dc.identifier.emailPam, HJ:pamhoatjoen@hku.hken_US
dc.identifier.authorityHo, JCM=rp00070en_US
dc.identifier.authorityPam, HJ=rp00071en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-6444242695en_US
dc.identifier.hkuros104914-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-6444242695&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume11en_US
dc.identifier.issue3en_US
dc.identifier.spage17en_US
dc.identifier.epage28en_US
dc.publisher.placeHong Kongen_US
dc.identifier.scopusauthoridHo, JCM=24831880500en_US
dc.identifier.scopusauthoridPam, HJ=6602976141en_US

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