File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Maximum axial load level and minimum confinement for limited ductility design of high-strength concrete columns

TitleMaximum axial load level and minimum confinement for limited ductility design of high-strength concrete columns
Authors
KeywordsColumns
Confinement
Ductility
High-strength concrete
Issue Date2009
PublisherTechno-Press. The Journal's web site is located at http://technopress.kaist.ac.kr/?journal=cac&subpage=6
Citation
Computers And Concrete, 2009, v. 6 n. 5, p. 357-376 How to Cite?
AbstractIn the design of concrete columns, it is important to provide some nominal flexural ductility even for structures not subjected to earthquake attack. Currently, the nominal flexural ductility is provided by imposing empirical deemed-to-satisfy rules, which limit the minimum size and maximum spacing of the confining reinforcement. However, these existing empirical rules have the major shortcoming that the actual level of flexural ductility provided is not consistent, being generally lower at higher concrete strength or higher axial load level. Hence, for high-strength concrete columns subjected to high axial loads, these existing rules are unsafe. Herein, the combined effects of concrete strength, axial load level, confining pressure and longitudinal steel ratio on the flexural ductility are evaluated using nonlinear moment-curvature analysis. Based on the numerical results, a new design method that provides a consistent level of nominal flexural ductility by imposing an upper limit to the axial load level or a lower limit to the confining pressure is developed. Lastly, two formulas and one design chart for direct evaluation of the maximum axial load level and minimum confining pressure are produced.
Persistent Identifierhttp://hdl.handle.net/10722/70579
ISSN
2015 Impact Factor: 0.849
2015 SCImago Journal Rankings: 0.506
References

 

DC FieldValueLanguage
dc.contributor.authorLam, JYKen_HK
dc.contributor.authorHo, JCMen_HK
dc.contributor.authorKwan, AKHen_HK
dc.date.accessioned2010-09-06T06:24:15Z-
dc.date.available2010-09-06T06:24:15Z-
dc.date.issued2009en_HK
dc.identifier.citationComputers And Concrete, 2009, v. 6 n. 5, p. 357-376en_HK
dc.identifier.issn1598-8198en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70579-
dc.description.abstractIn the design of concrete columns, it is important to provide some nominal flexural ductility even for structures not subjected to earthquake attack. Currently, the nominal flexural ductility is provided by imposing empirical deemed-to-satisfy rules, which limit the minimum size and maximum spacing of the confining reinforcement. However, these existing empirical rules have the major shortcoming that the actual level of flexural ductility provided is not consistent, being generally lower at higher concrete strength or higher axial load level. Hence, for high-strength concrete columns subjected to high axial loads, these existing rules are unsafe. Herein, the combined effects of concrete strength, axial load level, confining pressure and longitudinal steel ratio on the flexural ductility are evaluated using nonlinear moment-curvature analysis. Based on the numerical results, a new design method that provides a consistent level of nominal flexural ductility by imposing an upper limit to the axial load level or a lower limit to the confining pressure is developed. Lastly, two formulas and one design chart for direct evaluation of the maximum axial load level and minimum confining pressure are produced.en_HK
dc.languageengen_HK
dc.publisherTechno-Press. The Journal's web site is located at http://technopress.kaist.ac.kr/?journal=cac&subpage=6en_HK
dc.relation.ispartofComputers and Concreteen_HK
dc.subjectColumnsen_HK
dc.subjectConfinementen_HK
dc.subjectDuctilityen_HK
dc.subjectHigh-strength concreteen_HK
dc.titleMaximum axial load level and minimum confinement for limited ductility design of high-strength concrete columnsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1598-8198&volume=6&issue=5&spage=357&epage=376&date=2009&atitle=Maximum+axial+load+level+and+minimum+confinement+for+limited+ductility+design+of+high-strength+concrete+columnsen_HK
dc.identifier.emailHo, JCM:johnny.ho@hku.hken_HK
dc.identifier.emailKwan, AKH:khkwan@hkucc.hku.hken_HK
dc.identifier.authorityHo, JCM=rp00070en_HK
dc.identifier.authorityKwan, AKH=rp00127en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-70350123313en_HK
dc.identifier.hkuros162313en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-70350123313&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume6en_HK
dc.identifier.issue5en_HK
dc.identifier.spage357en_HK
dc.identifier.epage376en_HK
dc.publisher.placeKorea, Republic ofen_HK
dc.identifier.scopusauthoridLam, JYK=24831751200en_HK
dc.identifier.scopusauthoridHo, JCM=24831880500en_HK
dc.identifier.scopusauthoridKwan, AKH=7101738204en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats