基于一种交通状态系数的城市路网交通状态评价研究  

Research on Urban Traffic Network State Evaluation Based on a Traffic Network State Coefficient

作　　者：孙超[1] 王波[1] 张云龙[1] 徐建闽[2] 

机构地区：[1]深圳市城市交通规划设计研究中心有限公司,广东深圳518040 [2]华南理工大学土木与交通学院,广东广州510640

出　　处：《公路交通科技》2011年第5期113-120,共8页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金项目(50578064);广州市科技公关项目(2007Z2-D3111)

摘　　要：针对以往城市路网交通状态评价研究中大多从中观角度将路口归入路段而忽略了交叉口对路网交通状态影响的问题,选取交叉口进口饱和度和路段平均行程速度作为路网状态评价的基本参数,将宏观路网交通状态评价与微观交通状态分析相结合,定义了一种新的路网交通状态系数,作为交通畅通行驶的阻抗,研究确定了路网交通状态系数临界值,提出了一种新的路网交通状态分析方法,对模拟路网整体运行状态进行了分析;最后从可达性及连通性等方面对路网状态进行了分析和评价。To cope with the problem that intersection was put into road sections more from the meso perspective while ignoring the effect of intersection to traffic network state in previous studies of urban traffic network state evaluation,the basic parameters of traffic network state evaluation such as intersection entrance saturation and mean space speed of road sections were chosen,combining the macro road network state evaluation and microscopic traffic state analysis,a new traffic network state coefficient was defined as the traffic flow moving resistance.The critical value of the traffic network coefficient was studied and determined.A new method of road traffic network state analysis was put forward and the whole simulated road network state was analyed.Finally,the whole road network state was evaluated and analyed from the aspects of accessibility and connectivity.

关 键 词：交通工程 交通状态评价 平均行程速度 城市路网 交通状态系数 

分 类 号：U491[交通运输工程—交通运输规划与管理]