Age-Dependent Seismic Resilience of an Aging Bridge Network
Bridges are key links connecting different critical facilities in a highway transportation network. Bridge damage in the event of an extreme hazard may cause severe traffic disruption and thus directly affect the functionality of a highway network. The extent of damage that a particular bridge may experience under a certain extreme event condition depends on various factors including severity of the extreme event (e.g., earthquake magnitude), structural health (e.g., aging, chloride-induced deterioration), to name a few. The present study considers a highway network with 35 bridges in the Memphis region to estimate network resilience under a scenario seismic event of magnitude 6. Structural deterioration of constituent bridges due to chlorine diffusion over bridge life-spans is studied at two different time instances, year 2010 and 2050. For each corresponding year, bridge fragility curves are developed at various stages of bridge life (the age effect due to chloride deterioration) and used in conjunction with realistic recovery patterns to explore time-dependent change of network resilience considering total travel time in the network as the functionality measure. It is observed that aging due to chloride deterioration has an adverse impact on seismic resilience of the studied network. Results from this study suggests that the impact of aging of bridges for the calculation of seismic resilience of highway networks should not be ignored.
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Supplemental Notes:
- This paper was sponsored by TRB committee ABR10 Standing Committee on Critical Transportation Infrastructure Protection.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Kezhiyur, Alben Jose
- Banerjee, Swagata
- Shankar, Venky
- Basu, Prasenjit
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Conference:
- Transportation Research Board 95th Annual Meeting
- Location: Washington DC, United States
- Date: 2016-1-10 to 2016-1-14
- Date: 2016
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: 25p
- Monograph Title: TRB 95th Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: Aging (Materials); Deterioration; Earthquake resistant design; Earthquakes; Highway bridges; Networks; Structural health monitoring; Travel time
- Geographic Terms: Memphis (Tennessee)
- Subject Areas: Bridges and other structures; Highways; Planning and Forecasting; Security and Emergencies;
Filing Info
- Accession Number: 01592681
- Record Type: Publication
- Report/Paper Numbers: 16-0632
- Files: TRIS, TRB, ATRI
- Created Date: Mar 4 2016 5:04PM