This paper presents a mathematical framework for optimal management of aging bridge networks subjected to mainshock-aftershock sequences. The pre- and post-earthquake 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, and the effects of aging and deterioration process by time-dependent fragility curves. Optimal intervention sequences are identified under uncertainties involved related to bridge damage levels and mainshock-aftershock sequences based on a bi-objective optimization problem aiming at maximizing network resilience and minimizing costs associated with pre-event maintenance and retrofit interventions as well as post-repair restoration activities.
Resilience-based optimal management of aging bridge networks under mainshock-aftershock sequences
Jafari, L.;Capacci, L.;Biondini, F.;
2023-01-01
Abstract
This paper presents a mathematical framework for optimal management of aging bridge networks subjected to mainshock-aftershock sequences. The pre- and post-earthquake 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, and the effects of aging and deterioration process by time-dependent fragility curves. Optimal intervention sequences are identified under uncertainties involved related to bridge damage levels and mainshock-aftershock sequences based on a bi-objective optimization problem aiming at maximizing network resilience and minimizing costs associated with pre-event maintenance and retrofit interventions as well as post-repair restoration activities.File | Dimensione | Formato | |
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