Analysis on Development Space of Combined Passenger and Cargo High-speed Railway Transport Mode
Nowadays,express delivery operations in China are mainly done via highway transportation.With the rapid development of e-commerce,there is increasing demand for cargo transportation services of"strong timeliness and high value",which has posed new challenges to the traditional modes of cargo trans-portation.Against the background of continuous improvement in the railway transportation technology,the conditions and capacity of high-speed railway transportation have been greatly improved,making faster,saf-er,and more reliable cargo transportation services possible.Using high-speed railway in cargo transportation can satisfy the needs of the express delivery market for high value-added and high time-sensitive services.In response to this situation,considering the competition between high-speed railway,highway and civil avia-tion,in a cargo transportation network formed by several ODs,with the goal of maximizing the total trans-portation profit under the reserved passenger carriage for cargo transportation mode,we constructed a multi-objective bi-layer combined passenger-cargo high-speed railway transportation network planning model,and calculated the high-speed railway freight rate in the network and the distribution of cargo flow in the high-speed railway express network.Then using the NSGA-Ⅱ multi-objective optimization algorithm,we obtained the Pareto optimal solution.Finally,with the express delivery business between Beijing and Shanghai as example,we verified the effectiveness of the model constructed.As the numerical analysis shows,under the combined passenger and cargo transportation mode,the opti-mal freight rate of the high-speed railway freight service is 3.16 yuan/ton-kilometer,which is lower than aviation and slightly higher than highway.For short-distance ODs,high-speed railway is not far behind highway in market share,and accounts for nearly 50%of freight volume.Under the combined passenger and cargo transportation mode,cargo has consumed 14.3%of all carrying spaces,and the profit of the high-speed railway business has increased by 27.5%.According to a sensitivity analysis,as demand increases,the profitability of the high-speed railway freight business under the combined passenger and cargo transporta-tion mode will continue to increase,but its market competitiveness will not grow stronger with the change in demand.Express cargoes that are more time sensitive can further enhance the competitiveness of the high-speed railway freight business.Speed boost of the high-speed railway will have little impact on the high-speed railway freight business under the combined passenger and cargo transportation mode.Overall,the combined passenger and cargo transportation mode has little impact on high-speed railway passenger transport but can significantly increase the profitability of the high-speed railway transportation business.In addition,implementation of the combined passenger and cargo transportation mode on short-distance high-speed railway sections with insufficient passenger volume can increase income of the high-speed railway and enhance the competitivity of high-speed railway against highway in short-distance trans-port.
high-speed railway freight transportationcombined passenger and cargo transportationde-velopment spacemulti-objective optimization
万方数据
维普
