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低碳视角下公铁联运最后一公里配送路径优化研究
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Abstract:
针对公铁联运“最后一公里”配送中存在碳排放量和总成本过高等问题。从低碳视角出发，根据运输方式不同，分别构建低碳视角下公铁联运正向配送路径优化模型和正逆向结合路径优化模型，前者包含公铁运输成本及其碳排放成本、铁路物流中心发车成本等相关成本，后者在前者包含的成本上增加了逆向铁路运输成本及碳排放成本。然后，阐述了两个模型的区别。最后通过禁忌搜索算法对其进行求解。相关的案例分析结果显示；在总成本方面，正逆向结合运输模式相比单独正逆向运输模式总成本的费用节省率为41.03%；在碳排放成本方面，正逆向结合运输模式相比单独正逆向运输模式碳排放总成本的费用节省率为41.41%；在碳排放成本中公路运输碳排放成本占比最大，因此，通过提高车辆装载率，可以降低运输里程，从而达到降低公路运输成本的目的。研究为进一步优化公铁联运“最后一公里”配送服务提供参考。
Aiming at the problems of high carbon emission and total cost in the “last kilometer” distribution of rail-road intermodal transportation. From the perspective of low-carbon, according to different modes of transportation, the forward distribution path optimization model and the forward and reverse combination path optimization model of public and railway intermodal transport are respectively constructed from the perspective of low-carbon. The former includes the transport cost and carbon emission cost of public and railway logistics center, and the latter adds the reverse railway transport cost and carbon emission cost to the cost contained in the former. Finally, it is solved by tabu search algorithm. The results of relevant case studies show that; In terms of total cost, the cost saving rate of combined forward and reverse transport mode is 41.70% compared with that of single forward and reverse transport mode. In terms of carbon emission cost, the cost-saving rate of combined forward and reverse transport mode is 41.41% compared with the total carbon emission cost of single forward and reverse transport mode. In the carbon emission cost. Therefore, under the background of the country’s vigorous development of green and low-carbon, the road transport process should be optimized as much as possible. In terms of other costs, to achieve the purpose of reducing the road transportation cost. The results of this study provide a reference for further optimizing the “last kilometer” distribution service of rail-road intermodal transportation.
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