丁梓轩 韩宝睿 濮海建 潘义勇 朱震军

摘 要：为完善空间句法的道路网應用，优化小城镇路网体系的规划指标，运用空间句法，以选择度定量分析对外交通节点的功能等级，以集成度研究片区间连接通道布局的合理性，以集成核轴线和基于大数据平台的人口热力分布图的耦合关系判断路网结构对于用地功能发挥的影响程度。基于此方法，以宿迁市洋河镇为应用案例，分析发现，洋河镇东西两处对外交通节点选择度偏低，不利于保障镇区与主城的联系，片区间的通道集成度数值良好，但北部通道缺乏贯通性，南部拦马河路集成度与其道路等级匹配程度较低;镇区集成核周边人流密集程度与道路集成度具有一致性，且镇区用地类型的功能发挥受到集成核分布的显著影响。研究表明，本方法对于实现小城镇道路网结构与功能合理配置具有积极意义。

关键词：道路网;小城镇;空间句法;路网结构;规划指标;集成核

中图分类号：U13;U411    文献标识码：A   文章编号：1006-8023（2021）03-0111-08

Abstract：In order to complete the application of space syntax on the road network and to improve the planning indexes of the road network system in small towns， based on the space syntax， this paper quantitatively analyzed the function level of external traffic nodes， the rationality of connecting layout between channels and the influence of road network structure on land use function by choice， integration and the coupling relationship between the integrator and the population thermal distribution map. Yanghe Town was taken as a case under this method. It was found that the choice of corridors which were in east and west sides were low， which was not conducive to ensuring the connection between the town and the main city. Though the integration was enough high， the corridors which lied in north region were lack of coherence， meanwhile， the grades and integration of the road in south region did not very match. It was also found that the density of people activities around the integrator was consistent with the roads integration and the function of the land type was affected by the integrator significantly. Research showed that this method had positive significance for realizing the reasonable configuration of the road network structure and function of small towns.

Keywords：Road network; small town; space syntax; road network structure; planning index; integrator

0 引言

在小城镇演化发展过程中，始终难以实现内在要素资源的合理集聚与配置，这也是绝大多数小城镇未能得到应有发展的主要原因[1]。如何使小城镇道路规划促进当地发展，实现人口土地资源合理配置，是目前亟需解决的问题。在传统交通规划过程中，对道路功能定位多基于其历史地位和经验判断等，定性多而定量少;同时，传统方法缺乏对道路几何网络的空间分析研判，很少从拓扑关系分析道路所具备的区位优势。……