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CCE Seminar in Natural Hazards Engineering and Resilient Infrastructure

Jamie E. Padgett, Ph.D., associate professor, Department of Civil and Environmental Engineering, Rice University

Thursday, April 20, 2017 4:00 PM - 5:00 PM

Title: Exploring the Relationship between Sustainability and Hazard Resilience of Bridge Infrastructure

 

Abstract: Infrastructure is susceptible to a large host of threats including natural hazards, aging and deterioration, and demands that increase with population growth and urbanization. These threats result in physical damage and loss of functionality which affect resilience, as well as in cascading social, environmental, and economic impacts that impair sustainability. This presentation will use bridge infrastructure as a case study to explore the relationship between multi-hazard resilience and sustainability implications, uncovering the relative role of hazard resilience in life-cycle sustainability assessment and exploring alternative design or upgrade solutions that mitigate risks posed by multiple threats while balancing broader objectives of sustainability. Recent developments are presented in methodologies for multi-threat bridge fragility and restoration modeling. The resulting tools characterize the vulnerability and post-event functionality of bridges subjected to multiple concurrent and non-concurrent hazards, such as earthquakes, hurricane storm surge and wave, aging and deterioration, and heightened live loads. New understanding is afforded regarding the risks posed by multiple hazards and the synergies or tradeoffs in protecting infrastructure from different hazards. Furthermore the analysis techniques offer effective strategies to jointly consider cumulative damage (e.g. from aging) and punctuated damage (e.g. from earthquakes) when assessing the influence of design or upgrade decisions that may enhance resilience. Finally, this presentation illustrates a risk based life-cycle model for comparing and selecting bridge retrofit and repair strategies that not only improve infrastructure performance under multiple threats, but also enhance life-cycle sustainability measures, such as cost, emissions, and embodied energy. The results help to uncover the relationship between hazard resilience and sustainability of infrastructure, and guide the selection of optimal solutions which enhance sustainability while ensuring public safety.


Kearney Hall (campus map)
305
Dan Cox
541-737-3631
dan.cox at oregonstate.edu
Sch of Civil/Constr Engr
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