Beyond ductility: parametric testing of a jointed rocking beam-column connection designed for damage avoidance

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dc.contributor.authorRodgers, G.W.
dc.contributor.authorMander, J.B.
dc.contributor.authorChase, Geoff
dc.contributor.authorDhakal, Rajesh
dc.date.accessioned2017-01-09T20:28:50Z
dc.date.available2017-01-09T20:28:50Z
dc.date.issued2016en
dc.description.abstractDespite their good performance in terms of their design objectives, many modern code-prescriptive buildings built in Christchurch, New Zealand had to be razed after the 2010-2011 Canterbury earthquakes because repairs were deemed too costly due to widespread sacrificial damage. Clearly a more effective design paradigm is needed to create more resilient structures. Rocking, post-tensioned connections with supplemental energy dissipation can contribute to a damage avoidance designs (DAD). However, few have achieved all three key design objectives of damage-resistant rocking, inherent recentering ability, and repeatable, damage-free energy dissipation for all cycles, which together offer a response which is independent of loading history. Results of experimental tests are presented for a near full-scale rocking beam-column sub-assemblage. A matrix of test results is presented for the system under varying levels of posttensioning, with and without supplemental dampers. Importantly, this parametric study delineates each contribution to response. Practical limitations on posttensioning are identified: a minimum to ensure static structural re-centering, and a maximum to ensure deformability without threadbar yielding. Good agreement between a mechanistic model and experimental results over all parameters and inputs indicates the model is robust and accurate for design. The overall results indicate that it is possible to create a DAD connection where the non-linear force-deformation response is loading history independent and repeatable over numerous loading cycles, without damage, creating the opportunity for the design and implementation of highly resilient structures.en
dc.identifier.citationRodgers, G.W., Mander, J.B., Chase, J.G., Dhakal, R.P. (2016) Beyond ductility: parametric testing of a jointed rocking beam-column connection designed for damage avoidance. ASCE Journal of Structural Engineering, (early access online), pp. 10pp.en
dc.identifier.doihttps://doi.org/10.1061/(ASCE)ST.1943-541X.0001318
dc.identifier.urihttp://hdl.handle.net/10092/13016
dc.language.isoen
dc.publisherUniversity of Canterbury. Civil and Natural Resources Engineeringen
dc.publisherUniversity of Canterbury. Mechanical Engineeringen
dc.rights.urihttps://hdl.handle.net/10092/17651
dc.subject.anzsrcFields of Research::40 - Engineering::4005 - Civil engineering::400506 - Earthquake engineeringen
dc.subject.anzsrcFields of Research::40 - Engineering::4005 - Civil engineering::400510 - Structural engineeringen
dc.titleBeyond ductility: parametric testing of a jointed rocking beam-column connection designed for damage avoidanceen
dc.typeJournal Article
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