城市道路网的度相关性研究

Degree Correlation of Urban Street Networks

研究了基于stroke相交关系表示的道路网对偶图中的节点度的相关性。运用同配性系数,对美国40个城市道路网进行了实验,发现这些道路网既是同配的,又有异配的。同配性道路网具有易流通性和抗破坏性,这一点在城市规划领域具有潜在应用。本研究与前人的研究结论不同,对可能的原因进行了讨论。

In this paper, we use the assortative coefficient to study the degree correlation of urban street networks as represented by stroke intersections. It is found that some street networks demon- strate an assortative mixing pattern and others demonstrate disassortative mining pattern. The assor- tative networks would percolate easily and are resilient to breaks. This demonstrates potential for general applicability to urban planning. Our conclusions are opposite to previous work and possible reasons are discussed. Key words, road network; topological analysis; stroke; dual graph; degree; assortative coefficient