不同吨位车辆的混合运用策略研究
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摘要
在货物到达分布已知的前提下,采用数值模拟手段研究若干种不同吨位车辆(即大型车、小型车、中型车)混合运用策略下的运输成本与运输服务水平,并提出有针对性的车辆混合运用策略。研究表明,中型车适于在场站货物待运规模偏小的情形下使用,有效使用中型车有助于缩短货物的场站待运时间;此外,运用中型车时应注意平衡成本支出和服务水平间的关系。
The paper concentrates on the simultaneous utilization of vehicles of various capacities and aims especially to ascertain the necessity of using medium-capacity vehicles. Vehicles here can be trains,road trucks or vessels,and their capacities range from large,medium to small. Probability distribution of freight for transportation provided,this paper studies the transportation cost and service level of vehicles of various capacities in simultaneous utilization strategies with the method of numeral simulation. The experiment reveals that the use of medium-capacity vehicles can help decrease freight's waiting time at depots when the scale of freight for transportation is small. It's essential to balance the transportation cost and service level when medium-capacity vehicles are utilized.
The paper concentrates on the simultaneous utilization of vehicles of various capacities and aims especially to ascertain the necessity of using medium-capacity vehicles. Vehicles here can be trains,road trucks or vessels,and their capacities range from large,medium to small. Probability distribution of freight for transportation provided,this paper studies the transportation cost and service level of vehicles of various capacities in simultaneous utilization strategies with the method of numeral simulation. The experiment reveals that the use of medium-capacity vehicles can help decrease freight's waiting time at depots when the scale of freight for transportation is small. It's essential to balance the transportation cost and service level when medium-capacity vehicles are utilized.
引文
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[3]何杰,李旭宏,杭文,等.基于运力均衡与运量转移的公路货运运力结构预测[J].中国公路学报,2006,19(5):108-113.
[4]葛显龙,许茂增,王伟鑫.多车型车辆路径问题的量子遗传算法研究[J].中国管理科学,2013,21(1):125-133.
[5]鲁辽陆海货滚甩挂运输大通道建设工作推进领导小组.鲁辽陆海货运甩挂运输通道与枢纽规划[R].北京航空航天大学,2014.
[6]李重武.轨道交通两种车辆编组混合运行方案研究[J].现代交通技术,2010,7(6):79-83.
[7]陈斌,李英.宁波市轨道交通2号线不同编组列车混合运营方案研究[J].城市轨道交通研究,2011,(1):48-51.
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