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Resilience-Based Optimal Seismic Retrofit and Recovery Strategies of Bridge Networks under Mainshock–Aftershock Sequences.

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Title: Resilience-Based Optimal Seismic Retrofit and Recovery Strategies of Bridge Networks under Mainshock–Aftershock Sequences.
Authors: Jafari, Leila1 (AUTHOR) jafari.leila@ut.ac.ir, Khanmohammadi, Mohammad2 (AUTHOR) mkhan@ut.ac.ir, Capacci, Luca3 (AUTHOR) luca.capacci@polimi.it, Biondini, Fabio4 (AUTHOR) fabio.biondini@polimi.it
Source: Journal of Infrastructure Systems. Sep2024, Vol. 30 Issue 3, p1-13. 13p.
Subjects: Earthquake aftershocks, Retrofitting, Bridges, Network performance
Abstract: This paper proposes a mathematical framework for optimal retrofit and recovery strategies of bridge networks. The pre-earthquake and postearthquake management of the highway systems is addressed considering performance objectives based on seismic resilience and life-cycle costs. Structural capacity of vulnerable bridges and traffic performance of the transportation network are investigated accounting for the effects of aftershocks by state-dependent fragility curves informing cumulative damage scenarios. Optimal intervention sequences are identified under uncertainties related to bridge damage levels and mainshock–aftershock sequences based on a biobjective optimization problem aiming to maximize network resilience and minimize costs associated with pre-event retrofit and postrepair restoration activities. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:This paper proposes a mathematical framework for optimal retrofit and recovery strategies of bridge networks. The pre-earthquake and postearthquake management of the highway systems is addressed considering performance objectives based on seismic resilience and life-cycle costs. Structural capacity of vulnerable bridges and traffic performance of the transportation network are investigated accounting for the effects of aftershocks by state-dependent fragility curves informing cumulative damage scenarios. Optimal intervention sequences are identified under uncertainties related to bridge damage levels and mainshock–aftershock sequences based on a biobjective optimization problem aiming to maximize network resilience and minimize costs associated with pre-event retrofit and postrepair restoration activities. [ABSTRACT FROM AUTHOR]
ISSN:10760342
DOI:10.1061/JITSE4.ISENG-2301