Seismic Performance Assessment of a Retrofitted Bridge with Natural Rubber Isolators in Cold Weather Environments Using Fragility Surfaces

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dc.citation.articleNumber4022040
dc.citation.issueNumber6
dc.citation.journalTitleJournal of Bridge Engineering
dc.citation.volumeNumber27
dc.contributor.authorBandini, Pedro Alexandre Conde
dc.contributor.authorSiqueira, Gustavo Henrique
dc.contributor.authorPadgett, Jamie Ellen
dc.contributor.authorPaultre, Patrick
dc.date.accessioned2022-05-25T17:37:41Z
dc.date.available2022-05-25T17:37:41Z
dc.date.issued2022
dc.description.abstractRubber-based seismic isolation has been demonstrated to be one of the most effective measures to protect structural elements from damage during earthquakes and a viable option to retrofit existing structures with poor seismic detailing. The main constituent of these isolation units is rubber, a material that is subject to stiffening when exposed to low air temperatures. In the case of isolated highway bridges, thermal stiffening might reduce the efficiency of isolators, transferring higher forces to the substructure. Assessment of the seismic response of retrofitted structures using rubber isolators in cold regions is thus necessary. Accordingly, in this study, the effect of low temperatures on the seismic performance of a highway bridge retrofitted with natural rubber (NR) isolators is quantified using a probabilistic framework based on fragility surfaces. From the component- and system-level surfaces, it is revealed that the effects of cold temperatures on highway bridges retrofitted with elastomeric isolators may be negligible, depending on the configuration of lateral restraining structures. However, when isolators are able to perform their function without impediment, their thermal stiffening might be significantly detrimental to the bridge’s substructure, mainly affecting bent columns.
dc.identifier.citationBandini, Pedro Alexandre Conde, Siqueira, Gustavo Henrique, Padgett, Jamie Ellen, et al.. "Seismic Performance Assessment of a Retrofitted Bridge with Natural Rubber Isolators in Cold Weather Environments Using Fragility Surfaces." <i>Journal of Bridge Engineering,</i> 27, no. 6 (2022) ASCE: https://doi.org/10.1061/(ASCE)BE.1943-5592.0001873.
dc.identifier.digitalASCE-BE-1943-5592-0001873
dc.identifier.doihttps://doi.org/10.1061/(ASCE)BE.1943-5592.0001873
dc.identifier.urihttps://hdl.handle.net/1911/112413
dc.language.isoeng
dc.publisherASCE
dc.rightsThis work is made available under the terms of the Creative Commons Attribution 4.0 International license, https://creativecommons.org/licenses/by/4.0/
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleSeismic Performance Assessment of a Retrofitted Bridge with Natural Rubber Isolators in Cold Weather Environments Using Fragility Surfaces
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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