摘要
应用通信网理论对交通网进行建模及规划优化.分析了交通网络的特点,并将其类比为固定带宽及节点交换能力的通信网传输定长的IP包.运用图论,以最小工程代价对线路及枢纽进行路径和容量优化.以立交桥为例作为多端间以单向边全连接进行设计,通过增加一个中转分支点可将5和6个路口立交桥需建道路数由20和30减少为18和24.排队论用于线路拥堵的数学分布分析.对所建数学建模的计算结果表明,现代通信网技术可为交通环境评价、解决交通网优化和规划提供理论借鉴.
Communication network theories are utilized in modelling and programming optimization of transportation networks. Characteristics of transportation networks are analysed and taken as fixedlength IP packages transporting in fixed-bandwidth and fixed-node-exchangeability communication networks, Graphic theory is used for ways and crossings optimizing in path and capacity with minimum engineering investment. Programming of interchanges can be analyzed as a multi-point connecttion by each pair of uni-directional path between each two ports. By adding a medium point, the number of ways needed to build for 5-port and 6-port interchanges can be reduced from 20 and 30 to 18 and 24. Queuing theory is used to analyze the mathematical distribution of the ways and nodes blocked up. Calculation results of mathematical models showed that the above techniques can offer theoretical tools to support evaluation in transportation environment, programming and optimizing of the transportation networks.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2008年第2期150-154,共5页
Transactions of Beijing Institute of Technology
基金
国家"八六三"计划项目(2006AA01Z246)
北京科技计划项目(Y0305001041521)
教育部长江学者和创新团队发展计划项目(IRT0609)
北京邮电大学研究生创新基金资助项目
关键词
通信网
交通网络
建模与仿真
communication network
transportation network
modelling and simulation
