Abstract
The cascade failure theory is introduced into the risk propagation problem of the multimodal transport network in order to study the inherent law of risk propagation and provide theoretical support for the safety management of multimodal transport networks. Firstly, this paper analyses the characteristics of the multimodal transport network and concludes that the risk of the multimodal transport network belongs to failure risk. Secondly, the applicability of cascade failure theory is expounded. Based on cascade failure theory, a risk propagation model of the multimodal transport network is established. Through simulation experiments, the risk propagation of the multimodal transport network is analyzed from the differences of node distribution and node type. The process is analyzed, and the results show that different node distributions and different types of risk source nodes will have an impact on the risk propagation process. The influence of four types of node distributions on the risk propagation effect is in the following order: increasing type > concave-convex type ≈ balanced type > decreasing type. The influence of four types of source nodes on the risk propagation effect is in the following order: transportation type > transporting type > storage type > assistant type.
Highlights
Multimodal transport is a mode of transport that China is focusing on
Cao et al [23] compared the effects of three link-adding strategies to improve network robustness in the network structure, and the results show that the low-polarization linking strategy is most effective
The cascade failure model is applied to the multimodal transport network, and risk propagation in the multimodal transport network is studied
Summary
Multimodal transport is a mode of transport that China is focusing on. It plays an important role in the development of the country. The cascade failure problem of the multimodal transport network is still blank, but there are plenty of studies on urban transport networks. For the study of cascade failure theory, Wang and Rong [22] studied the impact of the initial load strength of different nodes on the network under the two attack modes of the US grid. E existing research results are based on the consistency of nodes in the network, and the initial load strength and node distribution rules of the network are studied. E authors believe that the node attribute is similar to the initial load strength and node distribution rules, and it is the key factor affecting the cascading failure effect in the network. Erefore, it is a new research idea to study the impact of different attributes of nodes on the network
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