Analysis of Vulnerability for New Western Land-sea Corridor Network Based on Cascading Failures
The New Western Land-Sea Corridor encompasses multiple ports and stations,rendering it vulnerable to risky events that can trigger cascading failures through goods transfer across nodes.This paper first constructs sub-networks based on distinct transportation modes and integrates geographically adjacent nodes to form a comprehensive transportation network.Subsequently,it identifies critical nodes contributing to network vulnerability using an enhanced CRITIC-TOSIS method.A nonlinear load-capacity cascading failure model is then developed to assess network vulnerability changes through connectivity and overload efficiency indicators.A vulnerability simulation of the network is conducted to compare and analyze the impact of various parameters and strategy settings on network vulnerability.The results reveal that:(1)the composite transportation network significantly reduces vulnerability compared to individual sub-networks under attack;(2)an intentional attack strategy focusing on node vulnerability leads to rapid network collapse,with a 99%decrease in the vulnerability index upon the failure of 10 nodes;(3)adjusting capacity coefficients within a specific range can effectively mitigate network vulnerability.When the capacity redundancy coefficient α≥4,β≥1.4 and overload capacity coefficient γ≥0.3,the network exhibits robust resilience against diverse attack strategies,maintaining a low vulnerability level.
integrated transportationvulnerability analysiscomplex networknew western land-sea corridorcascading failures
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维普
