Rehabilitation of earthquake damaged external RC beam-column joints

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dc.contributor.author Shafaei, Jalil en
dc.contributor.author Hosseini, A en
dc.contributor.author Marefat, MS en
dc.contributor.author Ingham, Jason en
dc.coverage.spatial Auckland en
dc.date.accessioned 2014-05-09T02:34:21Z en
dc.date.issued 2014-03-21 en
dc.identifier.citation New Zealand Society for Earthquake Engineering Technical Conference and AGM, Auckland, 21 Mar 2014 - 23 Mar 2014. Towards Integrated Seismic Design. 10 pages. en
dc.identifier.uri http://hdl.handle.net/2292/22079 en
dc.description.abstract Post-earthquake inspections of damaged RC buildings have demonstrated that poorly detailed beam-column joints can suffer serious damage. The effectiveness of a rehabilitation method based on joint enlargement using prestressed steel angles to enhance the seismic behaviour of damaged external reinforced concrete beam-column joints was experimentally investigated. Three half scale external RC beam-column joints with seismic and non-seismic reinforcement details were tested before and after rehabilitation by applying lateral cyclic loading of increasing amplitudes. Tested specimens were comprised of one unit having seismic reinforcement detailing and two units having non-seismic reinforcement detailing. Two defects were considered for the non-seismic units, being the absence of transverse steel hoops and insufficient bond capacity of beam bottom steel reinforcing bars in the joint panel zone. The damaged specimens were rehabilitated by injecting epoxy grout into existing cracks and installing stiffened steel angles at the re-entrant corners of the beam-column joint, both above and below the beam, that were mounted and held in place using prestressed high tensile strength bars. The test results indicated that the seismic performance of the rehabilitated specimens, in terms of strength, stiffness and ductility were fully recovered with respect to the performance of the seismically detailed specimen in the initial loading. en
dc.relation.ispartof New Zealand Society for Earthquake Engineering Technical Conference and AGM en
dc.relation.ispartofseries Towards Integrated Seismic Design en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Rehabilitation of earthquake damaged external RC beam-column joints en
dc.type Conference Item en
dc.description.version VoR - Version of Record en
pubs.author-url http://db.nzsee.org.nz/2014/Orals.htm en
pubs.finish-date 2014-03-23 en
pubs.publication-status Published en
pubs.start-date 2014-03-21 en
dc.rights.accessrights http://purl.org/eprint/accessRights/OpenAccess en
pubs.subtype Proceedings en
pubs.elements-id 431253 en
pubs.org-id Engineering en
pubs.org-id Civil and Environmental Eng en
pubs.record-created-at-source-date 2014-04-02 en


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