Performance of posttensioned seismic retrofit of two stone masonry buildings during the Canterbury earthquakes

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dc.contributor.authorDizhur, D.
dc.contributor.authorBailey, S.
dc.contributor.authorTrowsdale, J.
dc.contributor.authorGriffith, M.
dc.contributor.authorIngham, J.
dc.contributor.conferenceAustralian Earthquake Engineering Society Conference (2013 : Hobart, Tasmania)
dc.date.issued2013
dc.description.abstractSeismic retrofitting of unreinforced masonry buildings using posttensioning has been the topic of many recent experimental research projects. However, the performance of such retrofit designs in actual design level earthquakes has previously been poorly documented. In 1984 two stone masonry buildings within The Arts Centre of Christchurch received posttensioned seismic retrofits, which were subsequently subjected to design level seismic loads during the 2010/2011 Canterbury earthquake sequence. These 26 year old retrofits were part of a global scheme to strengthen and secure the historic building complex and were subject to considerable budgetary constraints. Given the limited resources available at the time of construction and the current degraded state of the steel posttension tendons, the posttensioned retrofits performed well in preventing major damage to the overall structure of the two buildings in the Canterbury earthquakes. When compared to other similar unretrofitted structures within The Arts Centre, it is demonstrated that the posttensioning significantly improved the in-plane and out-of-plane wall strength and the ability to limit residual wall displacements. The history of The Arts Centre buildings and the details of the Canterbury earthquakes is discussed, followed by examination of the performance of the posttension retrofits and the suitability of this technique for future retrofitting of other historic unreinforced masonry buildings.
dc.description.statementofresponsibilityDmytro Dizhur, Sara Bailey, John Trowsdale, Michael Griffith and Jason M. Ingham
dc.description.urihttp://www.engineersaustralia.org.au/events/australian-earthquake-engineering-society-annual-conference
dc.identifier.citationProceedings of the Australian Earthquake Engineering Society Conference, AEES 2013, 2013 / pp.1-15
dc.identifier.doi10.1061/(ASCE)CF.1943-5509.0000603
dc.identifier.isbn9780980742053
dc.identifier.issn0887-3828
dc.identifier.issn1943-5509
dc.identifier.orcidGriffith, M. [0000-0001-9010-3764]
dc.identifier.urihttp://hdl.handle.net/2440/83906
dc.language.isoen
dc.publisherAustralian Earthquake Engineering Society
dc.publisher.placeAustralia
dc.rightsCopyright status unknown
dc.source.urihttp://www.aees.org.au/wp-content/uploads/2015/06/65-Dizhur-Dmytro-performance.pdf
dc.subjectPosttensioning
dc.subjectRehabilitation
dc.subjectMasonry
dc.subjectEarthquake resistant structures
dc.titlePerformance of posttensioned seismic retrofit of two stone masonry buildings during the Canterbury earthquakes
dc.typeConference paper
pubs.publication-statusPublished

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