基于二流体模型的交通分析及OD出行时间矩阵  

Analysis of Traffic Based on Two-fluid Model and OD travel time matrix

作　　者：卢守峰[1] 王杰[1] 薛智规[2] 刘喜敏[1] 

机构地区：[1]长沙理工大学交通运输工程学院,湖南长沙410114 [2]长沙市公安局交通警察支队,湖南长沙410012

出　　处：《公路交通科技》2015年第11期132-137,142,共7页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金项目(71071024);湖南省自然科学基金项目(12JJ2025);长沙市科技局重点项目(K1106004-11)

摘　　要：为了获得小区域的交通特性并快速找出小区域之间的时间最短路径从而实现动态诱导的目的,利用出租车GPS数据提取出行距离和出行时间,运用二流体模型建立行驶时间与停止时间关系曲线,提出了利用二流体曲线进行交通分析的方法,发现二流体曲线的带宽对交通运行及疏导有较大价值。随后分析了各小区域单位距离行程时间与单位距离停驶时间的变化关系,佐证了不同小区域对交通变化的敏感度不同。最后利用矩阵迭代法计算了不同单位距离停驶时间下的最短出行时间路径,并分析了小区域之间的OD出行时间矩阵,表明二流体模型可用于动态路径诱导。In order to obtain the traffic characters of zones and quickly search the shortest time path of different zones so that realizing the purpose of dynamic route guidance,we extracted the travel distance and the travel time using taxi GPS data,and worked out the curve of the relationship between travel time and stop time using two-fluid model,and then put forward a method of traffic analysis using two-fluid curve. It is found that the bandwidths of two-fluid curves have a great value on traffic operation and guidance.Subsequently,we analyzed the relationship between unit distance travel time and unit distance stop time of different zones,and the result verified that the sensitivities of different zones to traffic change are different.Finally we calculated the shortest travel time path under different unit distance stop time using matrix iteration method,and analyzed the OD travel time matrix between different zones,which indicates that the two-fluid model can be used for dynamic route guidance.

关 键 词：交通工程 OD出行时间矩阵 二流体模型 城市路网 出租车GPS数据 

分 类 号：U491.122[交通运输工程—交通运输规划与管理]