河北工业科技2018，Vol.35Issue(2)：104-108,5.DOI:10.7535/hbgykj.2018yx02005
城市过江通道交通流速度和密度关系研究
Study of speed-density relationship of urban river-crossing passage
摘要
Abstract
In order to determine whether traffic flow characteristics of urban river-crossing passage are consistent with the clas-sical models of speed-density,the traffic flows on the First Luzhou Tuojiang River Bridge are researched.Video detection tech-nology is used to obtain traffic flow and speed data including all kinds of traffic conditions,such as during fastigium and normal period.After data cleaning and conversion,speed and density data are regressive analyzed,significance test is made,and traffic flow characteristic parameters,such as free-flow speed and jam density,are calculated.The results show that the linear model of Greenshields is more suitable for the direction of entering cities of urban river-crossing passage,while the exponential model of Underwood is more suitable for the direction of leaving cities.The difference of traffic flow characteristic parameters between bridge approaches and bridge mid pieces show that government departments should pay attention to the planning,design and management of the weaving segment on bridge approaches to improve the traffic capacity of cohesive segment of river-crossing bridge and organize reasonably the traffic flows of the downstream section of entering cities and the upstream section of leaving cities.关键词
道路工程其他学科/交通工程/速度和密度关系/回归分析/过江通道Key words
other subjects of road engineering/traffic engineering/speed-density relationship/regression analysis/river-cross-ing passage分类
交通工程引用本文复制引用
高建杰..城市过江通道交通流速度和密度关系研究[J].河北工业科技,2018,35(2):104-108,5.基金项目
2016年地方高校国家级大学生创新创业训练计划项目(201612212017) （201612212017）
