基于空间可达性的路网结构优化研究——以宁波北仑区为例

Optimizing Road Networks with Spatial Accessibility Evaluations: Beilun Port District Example

城市路网是城市空间结构的骨架,是各功能区之间空间联系的纽带。路网结构的完善是城市可持续发展的重要保证,对于路面结构合理与否的评价一般是基于空间可达性的考量。研究以宁波北仑区为例,运用了GIS技术,对其集装箱码头和重要节点路段的现状和规划交通可达性进行了分析,发现宁波市域综合交通规划切实改善了城市交通路网结构。可见,通过基于GIS技术的空间可达性变量对路网结构优化进行研究是可行的,其结论可对今后的规划和建设提供依据。

The road network is the skeleton of urban development and connects different districts.Good road networks promote sustainable urban development and road networks should be evaluated based on the level of spatial accessibility they provide.This paper uses the Beilun port district in Ningbo city as an example.GIS was used to compare the spatial accessibility between the assembly port and important nodes or intersections under both current conditions and conditions simulating a future transportation plan.The results show that the plan substantially improved the spatial accessibility of the city and that GIS can be used for road network improvement.