窄路密网下交通需求空间不平衡影响机理  

Influential Mechanism of Spatial Imbalance of Traffic Demand in the Context of Narrow Road and Dense Network

作　　者：荆毅 JING Yi(Shanghai Urban Construction Design and Research Institute(Group)Co.,Ltd,Shanghai 200125,China;Shanghai Tram Engineering Technology Research Center,Shanghai 200125,China)

机构地区：[1]上海市城市建设设计研究总院(集团)有限公司,上海200125 [2]上海有轨电车工程技术研究中心,上海200125

出　　处：《综合运输》2024年第3期55-60,132,共7页China Transportation Review

摘　　要：为研究交通需求空间分布不平衡对城市道路网络交通效率的影响,定义分别表征路网通行效率和路网运行效率的路网车公里和路网每公里车均延误两个指标,根据“窄路密网”新理念,构建路网密度和道路等级比例不同组合的路网模型,基于多源交通数据和数值仿真方法,对每个路网模型的交通需求水平及其离散程度进行多次随机试验,结果表明:当路网密度和道路等级比例一定时,路网每公里车均延误随着交通需求空间不平衡程度的增加而非线性增加;当路网密度一定时,路网每公里车均延误随着路网道路等级比例趋于合理而减小;当路网道路等级比例一定时,随着路网密度的增加,路网每公里车均延误没有显著区别,但路网车公里随着路网密度的增加而等比例增加。该结论可为相关部门进行设施规划建设、管理政策制定提供依据和支撑。In order to study the impact of spatial imbalance of traffic demand on the traffic efficiency of road networks,two indicators,vehicle kilometers of road network and delay per kilometer per vehicle of road network,are defined to represent through efficiency and operation efficiency of the road network respectively.According to the new concept of"narrow road and dense network,"network models with different combinations of road network density and road grade proportion are constructed.Based on multi-source traffic data and numerical simulation methods,multiple random tests are conducted on the traffic demand level and dispersion degree of each road network model,and the influence of different spatial imbalance degree of traffic demand on the road network traffic efficiency is studied.The results show that when road network density and road grade proportion is fixed,delay per kilometer per vehicle of road network increases nonlinearly with the increase of the spatial imbalance degree of traffic demand;when road network density is fixed,delay per kilometer per vehicle of road network decreases as road grade proportion becomes reasonable;when road grade proportion is fixed,with the increase of road network density,there is no significant difference in delay per kilometer per vehicle of road network,but the vehicle kilometers of road network increases in equal proportion with the increase of road network density.This conclusion can provide basis and support for relevant departments to carry out facility planning and construction,and formulate management policies.

关 键 词：窄路密网 交通需求空间不平衡 路网密度 道路等级比例 路网每公里车均延误 

分 类 号：U491[交通运输工程—交通运输规划与管理]