基于车辆可变折算系数的网络均衡模型及其应用  

A Network Equilibrium Model with Variable PCE and its Applications

作　　者：梁超[1] 范炳全[1] 董洁霜[1] 何祎豪[1] 

机构地区：[1]上海理工大学管理学院,上海200093

出　　处：《系统管理学报》2013年第6期888-892,共5页Journal of Systems & Management

摘　　要：混合交通流是我国交通流的典型特征。混合交通流中,小汽车和其他类型车辆的交通时间延误是不同的,其折算系数值随道路、交通和车辆类型、运输状态的条件的变化而变化。基于此,应视网络的通行能力为可变通行能力。基于可变通行能力的网络平衡才是更接近实际的网络平衡。以影响网络通行能力的车辆折算系数与各种相关因素关系为基础,给出了可变折算系数下的路段流量,并构建了基于可变车辆折算系数的一个全新的多用户网络均衡分配模型。最后,对温州市域公路网进行实证研究。研究结果表明:基于可变折算系数的多用户交通网络均衡模型比固定折算系数的网络均衡模型更接近实际,更具有实际应用价值。The road traffic is typically a mixed traffic in China. Time delay is not the same between cars and other vehicles in such a mixed traffic, so PCE varies with conditions of road, traffic, vehicle type and change of transportation status. Base on this understanding, it is not realistic to assume that the road network capacity or the traffic capacity is fixed. We should regard the network traffic capacity as a variable. The network balance with variable traffic capacity of is more realistic. Based on the relationship between the influence of the network capacity with variable PCE and the relevant factors, section flow is calculated under variable PCE. A new muhi-user network equilibrium model is then built. A case study of Wenzhou highway network is conducted. The results show that the multi-user network equilibrium model base on variable PCE is closer to the actual than network equilibrium model base on fixed PCE and it has more practical value.

关 键 词：可变折算系数 多用户网络均衡 变分不等式 相继平均法 

分 类 号：U491[交通运输工程—交通运输规划与管理]