区域高速公路网布局结构的连通度研究

公路网的连通度评价指标反映了网络中各节点的连通状况,体现了网络的结构特征。本文分析区域高速公路网布局结构的特点,评述现有的公路网连通度评价指标,并指出其存在的局限性。在此基础上提出路网加权模糊连通度的定义和计算方法,有效体现区域高速公路网布局结构评价中存在的节点重要度的差异性和线路连通度的模糊性。最后给出计算示例,说明该方法的有效性。

Research on Connectivity of Layout Structure for Regional Expressway Network

The highway network connectivity evaluation index reflects connectivity of each node in network,and embodies the structure characteristic of network.In this paper,the layout structure characteristic of regional expressway network is analyzed,then the application of existing highway network connectivity evaluation indexes in the evaluation of layout structure for regional expressway network is discussed,and the deficiency of those indexes is pointed out.Based on this the definition and calculating method of network power fuzzy connectivity is brought up,by this new evaluation index the difference of point importance degree and fuzzy of line connectivity is effectively embodied.At last a calculating example is given,and the validity of the new evaluation index is explained.