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Fragility of bridges exposed to multiple hazards and impact on transport network resilience

Yuan, Leung Fo Vincent, Argyroudis, Sotirios A., Tubaldi, Enrico, Pregnolato, Maria and Mitoulis, Stergios A. (2019) Fragility of bridges exposed to multiple hazards and impact on transport network resilience In: 2019 Society for Earthquake and Civil Engineering Dynamics conference (SECED 2019), 9-10 Sep 2019, Greenwich, London, UK.

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Transportation infrastructure is a pylon for the society and economy, enabling the services and transportation of goods and people, under normal and emergency circumstances. Bridges act as bottlenecks within road and rail networks, since bridges are crunch points along the network system. Their failures due to multiple natural hazards (e.g. floods, earthquakes, tsunami or ground movements) may cause disproportionate losses, which are expected to be exacerbated due to climate change. Thus, pinpointing the vulnerabilities and quantifying bridge resilience within transportation networks is of paramount importance in the context of natural hazards. However, reliable quantification of risk and resilience of bridges is not yet available, as engineering judgment dominates quantitative assessments. This paper describes an integrated framework for the development of numerical fragility functions and the resilience assessment of bridges subjected to multiple hazards. The framework is applied to obtain the fragility of a representative bridge exposed to flood-induced scour followed by an earthquake. The resulting fragility functions are essential to evaluate direct losses due to multiple hazards, i.e. physical damage, as a means to deliver the Quantitative Risk Assessment (QRA) of the exposed bridges and networks. The framework is extended to the transport network level exposed to multiple hazards, providing a mean for allocating the resources reasonably toward efficient management and consequence analysis.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
Yuan, Leung Fo Vincent
Argyroudis, Sotirios
Tubaldi, Enrico
Pregnolato, Maria
Mitoulis, Stergios
Date : 2019
Copyright Disclaimer : © 2019 Society for Earthquake and Civil Engineering Dynamics.
Related URLs :
Depositing User : Clive Harris
Date Deposited : 05 Nov 2019 15:51
Last Modified : 05 Nov 2019 15:51

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