摘要
为了满足高速公路安全管理系统的功能需求,提出了一种适合高速公路交通网络数据表达、操作与分析的基于交通流特性的高速公路交通网络数据模型,弥补了现有交通网络GIS数据模型在复杂的网络建模和分析中的不足。在分析高速公路交通流特性的基础上提出了高速公路交通网络的建模要素,并设计了概念建模、逻辑建模和物理建模的方法。该模型有利于迅速响应影响网络交通流分布的突发事件并生成安全管制决策,文中以高速公路网交通封闭实施位置算法为例说明其在高速公路安全管理领域的应用。
In order to satisfy the function demand of freeway safety management system,a data model for freeway traffic networks based on traffic flow characteristics is presented,which facilitates the GIS expression,operation and analysis of freeway traffic networks data,and offsets the deficiency of the existing GIS data model for traffic networks on modeling and analysis of complex networks.On the basis of analyzing freeway traffic flow characteristics,the author establishes fundamental modeling cell of freeway traffic networks,and designs the methods of conceptual modeling,logical modeling and physical modeling.Furthermore,this model makes for the fleet response of burst event that influences the distribution of networks traffic flow,and generation of safety management and control decisions.Finally,taking traffic closure operation position algorithm as an example,the application of the model in the field of freeway safety management is illustrated.
出处
《计算机工程与应用》
CSCD
北大核心
2007年第23期244-248,共5页
Computer Engineering and Applications
基金
上海市重点学科建设资助项目
关键词
高速公路安全管理系统
交通网络
交通流特性
GIS数据模型
算法
freeway safety management system
traffic networks
traffic flow characteristics
GIS data model
algorithm
