摘要
针对既有点—弧模型和弧—路模型的局限性做2点改进。第1点是定义1个0—1决策变量,使优化结果体现车流的径路;第2点是区分大股车流和小股车流,使优化结果符合实际车流组织的特点。基于多商品流模型,结合铁路运输组织的车流不拆散原则,对大股车流、线路能力和车站能力进行约束,构建铁路网车流分配和径路优化改进模型,采用Lingo 8.0软件求解。以简化的东北地区局部路网为例,采用模拟OD车流,按照本文构建的模型进行铁路网车流分配及径路优化。结果表明:采用该模型能够得出较理想的车流分配和径路方案,验证了模型的合理性与有效性。
By analyzing the drawbacks of node-arc and arc-route ear flow assignment model, improvements were made on the following two aspects. One was to define a 0-1 decision variable which could make the optimization results reflect car flow routing. The other was to differentiate the car flows according to their volume to make the optimization results accord with the characteristics of the actual car flow organization. Based on multi-commodity flow model, the ear flow assignment and routing optimization model of railway network was built, which subjected to each car flow moving on one route only, car flow with big volume, the capacity of lines and stations. The model could be solved by software Lingo 8.0. Taking the simplified local railway network in the Northeast China for example, the car flow was assigned and the routing was optimized for railway network according to the proposed model by adopting the simulated OD ear flow. Results show that more ideal car flow which has verified the rationality and assignment and routing plan can be the validity of the proposed model. obtained by the proposed model,
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2011年第3期107-110,共4页
China Railway Science
基金
铁道部科技研究开发计划项目(2009X004-B
2010X010-A)
博士点基金资助项目(200800040013)
关键词
车流组织
车流径路
铁路网
多商品流模型
优化模型
Car flow organization
Car flow routing
Railway network
Multi-commodity flow model
Optimization model
作者简介
作者简介：纪丽君（1983-），女，河北高碑店人，博士研究生。
