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Tuned Mass Dampers for Response Reduction of a Reinforced Concrete Chimney Under Near-Fault Pulse-Like Ground Motions

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author Elias, Said
dc.contributor.author Rupakhety, Rajesh
dc.contributor.author Ólafsson, Símon
dc.date.accessioned 2020-12-21T11:09:42Z
dc.date.available 2020-12-21T11:09:42Z
dc.date.issued 2020-06-26
dc.identifier.citation Elias S, Rupakhety R and Ólafsson S (2020) Tuned Mass Dampers for Response Reduction of a Reinforced Concrete Chimney Under Near-Fault Pulse-Like Ground Motions. Front. Built Environ. 6:92. doi: 10.3389/fbuil.2020.00092
dc.identifier.issn 2297-3362
dc.identifier.uri https://hdl.handle.net/20.500.11815/2314
dc.description Publisher's version (útgefin grein)
dc.description.abstract The article investigates response mitigation of a reinforced concrete (RC) chimney subjected to pulse-like near-fault ground motions using tuned mass damper (TMD) schemes. The total height of the chimney is 265 m with a mass of 11,109 ton. Three TMD schemes are used: single tuned mass damper (STMD), multiple TMDs having equal stiffness (w-MTMDs) and multiple TMDs having equal masses (e-MTMDs). The STMD is tuned to the fundamental frequency of the chimney while both w-MTMDs and e-MTMDs have three TMDs for controlling each of the first and second modes (total of six TMDs) of vibration. Response of the uncontrolled and controlled structures is calculated for 69 recorded ground motions containing a dominant velocity pulse. Displacement and acceleration at top node of the RC chimney are the response of interest for performance assessment. It is found that e-MTMDs are more effective and robust than other schemes. It is also found that the pulse period of ground motion plays a very important role in how effective the control schemes are. There is a large variability in the reduction of response across these ground motions, and optimization methods independent of ground motion are not robust. There is a need for more advanced optimization methods incorporating information about local seismic sources.
dc.description.sponsorship We acknowledge support from University of Iceland Research Fund.
dc.format.extent 92
dc.language.iso en
dc.publisher Frontiers Media SA
dc.relation.ispartofseries Frontiers in Built Environment;6
dc.rights info:eu-repo/semantics/openAccess
dc.subject Chimney
dc.subject Earthquake
dc.subject Near-fault ground motion
dc.subject Reinforced concrete (RC)
dc.subject Tuned mass dampers
dc.subject Vibration
dc.subject Jarðskjálftaverkfræði
dc.title Tuned Mass Dampers for Response Reduction of a Reinforced Concrete Chimney Under Near-Fault Pulse-Like Ground Motions
dc.type info:eu-repo/semantics/article
dcterms.license This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
dc.description.version Peer Reviewed
dc.identifier.journal Frontiers in Built Environment
dc.identifier.doi 10.3389/fbuil.2020.00092
dc.relation.url https://www.frontiersin.org/article/10.3389/fbuil.2020.00092/full
dc.contributor.department Umhverfis- og byggingarverkfræðideild (HÍ)
dc.contributor.department Faculty of Civil and Environmental Engineering (UI)
dc.contributor.school Verkfræði- og náttúruvísindasvið (HÍ)
dc.contributor.school School of Engineering and Natural Sciences (UI)

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