A Greedy Strategy-based Method for Enhancing Multidimensional Seismic Resilience of Highway Bridge Networks

Considering the prioritization of post-earthquake bridge restoration at the network level enhances the transportation network's ability to maintain basic functionality and continuous operation, even in the presence of localized failures caused by seismic events. By integrating the greedy algorithm into post-earthquake bridge network recovery models, a recovery method was developed to maximize the efficiency of enhancing the resilience of transportation networks after seismic events. This study considers post-earthquake degradation, recovery speed, and overall restoration levels, analyzing resilience across three dimensions: physical resilience represented by network connectivity, functional resilience based on traffic flow, and economic resilience derived from economic indicators. A case study on the Chengdu bridge network demonstrates that the recovery strategy achieves coordinated improvements across multiple resilience dimensions.