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dc.contributor.authorWilliamson, Michael
dc.contributor.authorJohn, Luis
dc.contributor.authorSullivan, Timothy
dc.date.accessioned2021-06-22T04:01:58Z
dc.date.available2021-06-22T04:01:58Z
dc.date.issued2021-04-14
dc.identifier.urihttps://repo.nzsee.org.nz/xmlui/handle/nzsee/2392
dc.description.abstractLow Damage Seismic Design (LDSD) guidance material being developed by Engineering NZ is considering a design drift limit for multi-storey buildings of 0.5% at a new damage control limit state (DCLS). The impact of this new design requirement on the expected annual loss due to repair costs is investigated for a four-storey office building with reinforced concrete walls located in Christchurch. The LDSD guidance material aims to reduce the expected annual loss of complying buildings to below 0.1% of building replacement cost. The research tested this expectation. Losses were estimated in accordance with FEMA P-58, using building responses from non-linear time history analyses (performed with OpenSees using lumped plasticity models). The equivalent static method, in line with NZS 1170.5 and NZS 3101, was used to design the building to LDSD specifications, representing a future state-of-practice design. The building designed to low-damage specification returned an expected annual loss of 0.10%, and the building designed conventionally returned an expected annual loss of 0.13%. Limitations with the NZS 3101 method for determining wall stiffness were identified, and a different method acknowledging the relationship between strength and stiffness was used to redesign the building. Along with improving this design assumption, the study finds that LDSD design criteria could be an effective way of limiting damage and losses.
dc.language.isoen
dc.publisherNew Zealand Society for Earthquake Engineering
dc.relation.ispartofseries2021;0135
dc.subjectImproving understanding of seismic hazard and risk
dc.subjectAdvancements in structural and geotechnical design and assessment
dc.titleInvestigating the impact of design criteria on the expected seismic losses of an office building
dc.typeArticle


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