Observations from the 2010/2011 Canterbury Earthquakes and Subsequent Experimental Pull-Out Test Program of Wall-to-Diaphragm Adhesive Connections

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dc.contributor.author Dizhur, Dmytro en
dc.contributor.author Campbell, J en
dc.contributor.author Schultz, A en
dc.contributor.author Ingham, Jason en
dc.contributor.editor Hobbs, S en
dc.date.accessioned 2014-01-21T01:20:41Z en
dc.date.issued 2013-04-01 en
dc.identifier.citation Journal of the Structural Engineering Society of New Zealand 26(1):11-20 01 Apr 2013 en
dc.identifier.uri http://hdl.handle.net/2292/21446 en
dc.description.abstract The connections between walls of unreinforced masonry (URM) buildings and flexible timber diaphragms are critical building components that must perform adequately before desirable earthquake response of URM buildings may be achieved. Field observations made during the initial reconnaissance and the subsequent damage surveys of clay brick URM buildings following the 2010/2011 Canterbury, New Zealand earthquakes revealed numerous cases where anchor connections joining masonry walls or parapets with roof or floor diaphragms appeared to have failed prematurely. These observations were more frequent for adhesive anchor connections than for through-bolt connections (i.e. anchorages having plates on the exterior façade of the masonry walls). Subsequently, an in-field test program was undertaken in an attempt to evaluate the performance of adhesive anchor connections between unreinforced clay brick URM walls and roof or floor diaphragms. The study consisted of a total of almost 400 anchor tests conducted in eleven existing URM buildings located in Christchurch, Whanganui and Auckland. Specific objectives of the study included the identification of failure modes of adhesive anchors in existing URM walls and the influence of the following variables on anchor load-displacement response: adhesive type, strength of the masonry materials (brick and mortar), anchor embedment depth, anchor rod diameter, overburden level, anchor rod type, quality of installation and the use of metal mesh sleeve. In addition, the comparative performance of bent anchors (installed at an angle of minimum 22.5o to the perpendicular projection from the wall surface) and anchors positioned horizontally was investigated. Observations on the performance of wall-to-diaphragm connections in the 2010/2011 Canterbury earthquakes, a snapshot of the performed experimental program and the test results and a preliminary proposed pull-out capacity of adhesive anchors are presented herein. en
dc.relation.ispartofseries Journal of the Structural Engineering Society of New Zealand 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 Observations from the 2010/2011 Canterbury Earthquakes and Subsequent Experimental Pull-Out Test Program of Wall-to-Diaphragm Adhesive Connections en
dc.type Journal Article en
pubs.issue 1 en
pubs.begin-page 11 en
pubs.volume 26 en
pubs.end-page 20 en
pubs.publication-status Published en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 381097 en
pubs.org-id Engineering en
pubs.org-id Civil and Environmental Eng en
pubs.record-created-at-source-date 2013-06-16 en


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