Shake table test a structure retrofitted using 2-4 Direction Displacement Dependent (D3) viscous dampers

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dc.contributor.author Hazaveh, NK en
dc.contributor.author Rad, AA en
dc.contributor.author Rodgers, GW en
dc.contributor.author Chase, JG en
dc.contributor.author Pampanin, S en
dc.contributor.author Ma, Tsun Ming Quincy en
dc.coverage.spatial Wellington, NZ en
dc.date.accessioned 2017-09-26T00:58:32Z en
dc.date.issued 2017-04-28 en
dc.identifier.citation In NZSEE 2017; New Zealand Society for Earthquake Engineering Annual Conference and Anti-Seismic Systems International Society 15th World Conference on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures. Wellington, NZ en
dc.identifier.uri http://hdl.handle.net/2292/35781 en
dc.description.abstract Many seismic codes are modified to represent increased hazard or performance expectations of structures. According to the new code, many structures require retrofit to meet these increase performance expectations. Fluid viscous dampers can add energy dissipation without requiring major structural modification. However, their addition can lead to substantial increases in the maximum base shear and column axial forces in non-linear structures. In practice, these increases in demand would likely require strengthening of the columns and the foundations, thus increasing cost and reducing the ease and potential impact of this approach. In contrast, the 2-4 configuration of a passive Direction and Displacement Dependent (D3) damper provides damping in only quadrants 2 and 4 of the force-displacement response plot, thus substantially reducing peak base shear loads compared to a conventional viscous damper. The paper looks at the seismic performance of a 1/2 scale, two storey steel frame building that is retrofitted with the passive 2-4 D3 damper subjected to uni-directional shake table testing. Performance in mitigating structural response and foundation demand are assessed by evaluating base shear, maximum drift and acceleration. The overall results show that simultaneous reductions in displacement, base-shear and acceleration demand are only available with the 2–4 D3 viscous device. This device is entirely passive, and provides unique retrofit opportunity that does not require strengthening of the columns and the foundations. en
dc.description.uri http://www.confer.co.nz/nzsee2017/wp-content/uploads/2017/02/NZSEE-2017-Programme-25.04.17.pdf en
dc.relation.ispartof NZSEE 2017; New Zealand Society for Earthquake Engineering Annual Conference and Anti-Seismic Systems International Society 15th World Conference on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures 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 Shake table test a structure retrofitted using 2-4 Direction Displacement Dependent (D3) viscous dampers en
dc.type Conference Item en
dc.rights.holder Copyright: NZSEE en
pubs.author-url http://db.nzsee.org.nz/2017/O3B.2_Hazaveh.pdf en
pubs.finish-date 2017-04-29 en
pubs.start-date 2017-04-27 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Conference Paper en
pubs.elements-id 637481 en
pubs.org-id Engineering en
pubs.org-id Civil and Environmental Eng en
pubs.record-created-at-source-date 2017-07-17 en


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