摘要
可达性是公路网规划方案的重要评价指标之一。由于研究目的、研究范围等不同,国内外在可达性的定义及模型形式等方面存在一定的差异。文章以公路网络的可达性为研究对象,首先剖析了结点的交通需求、结点层次以及驾驶员路径选择行为对可达性的影响,进而对现有可达性模型进行改进,建立了综合考虑结点的交通需求、结点层次以及驾驶员路径选择行为这三个因素,以结点间最短路线长度和最短出行时间以及结点重要度为变量的公路网络可达性模型。
Accessibility is one of important indexes to evaluate highway network planning scheme. Due to difference in study purpose and range, the definition and model of accessibility in China and those in foreign countries are different. Using accessibility of highway network as study object, this paper firstly analyzed the influence of highway network nodes＇ traffic demand, nodes hierarchy and route choice behavior of driver on accessibility, based on which the current accessibility model is improved. The improved model comprehensively considers three factors, that is, nodes＇ traffic demand, nodes hierarchy and route choice behavior of driver, and the variables are length of shortest path and minimal time between nodes and the degree of importance of node.
出处
《公路交通科技》
CAS
CSCD
北大核心
2006年第6期104-107,共4页
Journal of Highway and Transportation Research and Development
关键词
公路网
可达性
模型
重要度
highway network
accessibility
model
degree of importance
