Evaluation of Flexural Performance of Slab Bridges in the Pacific Northwest Region Subjected to Long-Duration Earthquake Events

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Author(s)Obayes, Shaymaa
Author(s)Head, Monique
Date Accessioned2024-08-30T17:53:34Z
Date Available2024-08-30T17:53:34Z
Publication Date2024-08-08
DescriptionThis article was originally published in International Journal of Civil Infrastructure. The version of record is available at: https://doi.org/10.11159/ijci.2024.011 © Copyright 2024 Authors - This is an Open Access article published under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0) terms. Unrestricted use, distribution, and reproduction in any medium are permitted, provided the original work is properly cited.
AbstractWhile previous studies have explored bridge vulnerabilities, there is a notable gap in assessing the susceptibility of existing bridges, particularly slab bridges, to long-duration earthquakes in seismically active regions. This study uniquely quantifies and evaluates the impact of a moment magnitude (MW) 9.0 earthquake, characterized by its long duration, on the incipient collapse risk of slab bridges in the Pacific Northwest (PNW) region of the United States. The assessment includes potential flexural failures in slab bridge columns and the associated collapse risk. A slab bridge is modeled in OpenSees for case studies to determine vulnerability and incipient collapse risk through fragility analyses and a risk-targeted approach in accordance with the 2023 AASHTO Guide Specifications for LRFD Seismic Bridge Design. The study emphasizes the consequences of outdated seismic design standards, particularly for slab bridges constructed before the 1990s. Moreover, the findings reveal that long-duration earthquakes significantly increase the collapse risk of aging slab bridges built before the 1990s.
CitationObayes, Shaymaa, and Monique Head. “Evaluation of Flexural Performance of Slab Bridges in the Pacific Northwest Region Subjected to Long-Duration Earthquake Events.” International Journal of Civil Infrastructure 07 (2024). https://doi.org/10.11159/ijci.2024.011.
ISSN2563-8084
URLhttps://udspace.udel.edu/handle/19716/34911
Languageen_US
PublisherInternational Journal of Civil Infrastructure
dc.rightsAttribution 3.0 Unporteden
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/
Keywordsslab bridge
KeywordsPacific Northwest
Keywordslong-duration
Keywordsfragility analyses
Keywordsrisk-targeted
TitleEvaluation of Flexural Performance of Slab Bridges in the Pacific Northwest Region Subjected to Long-Duration Earthquake Events
TypeArticle
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