Vulnerability Assessment and Recovery Strategies for Container Shipping Networks from a Resilience Perspective
The existing vulnerability evaluation of shipping networks and recovery strategies are suffering from two limitations.One is using a single assessment method,simplifying the complexity of the shipping network;the other is neglecting actual operational capabilities and spatial distance in recovery strategies,resulting in poor effective-ness in emergencies.To fill the gaps,a comprehensive evaluation of the vulnerability of the shipping network is pro-posed,considering the topology of the network and its actual operational capacity;multi-dimensional vulnerability evaluation indices are found based on the coefficient of variation method;recovery strategy is designed based on the backup-port rank that incorporates the spatial distance,the capacity of ports,and the number of berths.Several inno-vations to the model and algorithm are introduced,including a dynamic evaluation framework,adaptive weights for vulnerability indicators,and optimizations for backup port selection and traffic diversion in emergencies.To vali-date the proposed method,container shipping networks of China-Europe,China-Mediterranean,China-US(East Coast),and China-US(West Coast)in 2020 are introduced,topology maps of these networks are developed,and the vulnerability and dynamic capacity of these networks are analyzed.The findings show that the resilience of the ship-ping network is improved by 11.6% when a single port backup recovery strategy is implemented,and by 31.5% when a dual port backup recovery strategy is adopted.In summary,the proposed vulnerability assessment method and the recovery strategy based on backup-port ranking provide a novel way to improve the resilience of the ship-ping networks,highlighting the importance of vulnerability assessment and backup recovery strategies in shipping networks.
vulnerability of shipping networkbackup portsnetwork resiliencerecovery strategies
万方数据
维普
