Robustness Analysis of Seaport-dry Port Container Transport Networks under Cascading Failure

When a seaport is attacked and fails, cascading failure effect will be generated in the seaport-dry port container transport network due to the connectivity between ports, which will then spread to the whole network. To this end, this paper conducts a study on the robustness of seaport-dry port container transport networks under cascade failure. This paper designs different state indicators for seaport nodes and dry port nodes, establishes load transfer equations for invalid nodes based on the node failure propagation capability and inter-node gravity model, constructs a cascade failure model and robustness assessment index for seaport-dry port container transport network, and explore the impact of the failure propagation capability threshold of neighbor node, the amount of node redundancy, the proportion of port hopping, the change in the number of cooperative dry ports at seaports and different node attack modes on network robustness, it also explores the change in business volume of its competing ports after the failure of the seaport. The results show that there is an optimal value interval for the node failure propagation capacity threshold and the hopping port ratio in terms of enhancing robustness performance; increasing the node tolerance parameters within a certain range can help reduce the impact of network cascading failures; and the extent of overlap of the dry ports with which the seaports cooperate should not be too high; competing seaports will take a share of the business of the invalid seaport, which is related to the distance between the two ports and the operational capacity of the competing seaport. © 2023 Science Press. All rights reserved.