摘要
为提高中欧班列运输效率,降低运输成本,根据中欧班列运输网络站点和线路现状,构建了混合轴辐式中欧班列运输网络.在此基础上,加入时间因素,形成中欧班列动态运输服务网络.结合动态运输服务网络特点,设置四维决策变量,以货流平衡、班列接续、编组能力限制、列车服务能力限制、运输时间限制等为约束,综合运营成本最低为优化目标,构建了中欧班列开行方案优化模型.选择15个境内货源地和7个境外需求地构成的运输网络为例进行分析验证,结果表明:当运输需求为17时,得出的开行方案包括9个集结班列和8个干线班列,与全直达运输方案相比,在运输相同货物347 FEU时,模型求解得到的“直达+中转”开行方案能够降低中欧班列运输线路的重合率,节省37 h的总时间消耗.优化后的中欧班列开行方案能够降低运输时间,提高运输效率,可以为中欧班列日常运输计划的制定提供参考.
To improve the transportation efficiency of China Railway Express(CRE)and reduce transportation costs,according to the current situation of stations and lines in the transportation network,a hybrid hub-and-spoke CRE transportation network is constructed.On this basis,the time factor is added to form a dynamic transportation service network for the CRE.Combined with the characteristics of the dynamic transportation service network,the four-dimensional decision variables are set,and the optimization model of CRE operation plan is constructed with the constraints of freight flow balance,train succession,marshalling capacity limitation,train service capacity limitation and transportation time limitation,and the lowest comprehensive operation cost as the optimization target.The transportation network composed of 15 domestic sources and 7 overseas demand areas is selected as an example for analysis and verification.The results show that when the transportation demand is 17,the operation plan includes 9 assembly trains and 8 trunk trains.Compared with the fully direct operation plan,the“direct+transit”operation plan obtained by the model can reduce the overlap rate of CRE transportation lines and save 37 hours of total time consumption when transporting the same goods 347FEU.The optimized operation plan of CRE can reduce transportation time and improve transportation efficiency,which provides references for the formulation of daily operation plan of CRE.
作者
薛锋
黄倩
李海
XUE Feng;HUANG Qian;LI Hai(School of Transportation and Logistics,Southwest Jiaotong University,Chengdu 611756,China;National United Engineering Laboratory of Integrated and Intelligent Transportation,Southwest Jiaotong University,Chengdu 611756,China;National Engineering Laboratory of Integrated Transportation Big Data Application Technology,Southwest Jiaotong University,Chengdu 611756,China;China Railway Xi’an Group Co.Ltd.,Xi’an 710054,China)
出处
《北京交通大学学报》
CAS
CSCD
北大核心
2022年第4期1-8,共8页
JOURNAL OF BEIJING JIAOTONG UNIVERSITY
基金
国家自然科学基金(61203175)
中国国家铁路集团有限公司科技研究开发计划重大课题(P2018X003)
四川省自然科学基金(2022NSFSC0471)。
关键词
铁路运输
中欧班列
轴辐式网络
动态运输服务
开行方案
railway transportation
China railway express
hub-and-spoke network
dynamic transportation service
operation plan
