Research on multi-objective intermodal transportation of grain in China considering quality changes

The regional differences in grain supply and demand across China are obvious, showing the characteristics of a shortage of grain in the south and a surplus in the north. An intermodal transport network for grain transportation from northern China to the south is established, and the multi-point method is used to convert the network. Time, cost, and quality loss are chosen as the optimization targets of the path planning, and the node selection method is created to solve the multiobjective shortest path problem, which can avoid getting into local optimal solutions. Finally, the route from Yingkou port to Zhoushan port in China is used as a mathematical example to verify the feasibility of the study.