Research On Route Optimization Of High-Speed Traffic Multi-Modal Transport Based On Complex Network

With the continuous improvement of China’s high-speed transportation network,the problem of route optimization of high-speed transportation multi-modal transportation has become a research hots-pot in the transportation industry.Improving the connectivity of multi-modal transport,reducing the cost of multi-modal transport,optimizing multi-modal transport routes,and building an intensive and efficient high-speed multi-modal transport system have become important tasks in the current transportation industry.In this context,this paper analyzes the characteristics of multi-modal transport network based on complex network theory,builds a multi-modal transport route optimization model,and uses operations research related theories and methods to study the multi-modal transport route optimization problem.This paper takes main cities in China as research objects,uses complex network theory to construct high-speed transportation sub-network and high-speed transportation complex network between cities,draws complex network diagram using Ucient and netdraw network analysis tools,calculates the centrality index value of node cities in each complex network using Pajek software,and analyses the transit capacity and comprehensive transportation capacity of each city in multi-mode transportation network.Construct comprehensive evaluation system of importance of inter-modal cities based on centrality index and urban development index of high-speed transportation complex network,adopt system clustering analysis method,and carry out systematic clustering analysis on evaluation index system of each node city of multi-modal transportation by SPSS analysis software,so as to obtain urban aggregation of high-speed transportation multi-modal transfer hub;The traversing search algorithm is selected to construct the objective function with the lowest composite cost of total cost and time cost of high-speed multi-modal transportation as the optimization objective.The optimal path and total cost of multi-modal transportation corresponding to different combination of transfer hub cities are calculated and compared with each other by using Matlab software.The results show that,on the one hand,due to the advantages of high-speed transportation,transportation costs and time costs of direct transportation between some cities are the best;On the other hand,the setting of transfer hub city can optimize the total cost and time cost of multi-modal transportation,and under different combination of transfer hub cities,the degree of multi-modal transportation path optimization shows different effects.Considering comprehensively the development mode and system of high-speed multi-mode transport in China,and combining the research results of this paper,the specific optimization strategy of high-speed multi-mode transport is put forward,which provides certain theoretical basis and practical reference for the government to further develop high-speed multi-mode transport.