跨界道路交通对同城化地区时空联系影响研究：广佛案例

同城化是区域内城市发展到一定阶段的产物,而交通是同城化时空联系产生的重要基础。利用空间句法以及时间地图方法,分析广佛时空结构特征,多方面探讨跨界道路建设对广州与佛山时空联系的影响。结果表明：① 广佛时空结构特征方面,5 km、10 km句法整合度模型呈现以广州内环高速范围内地区为中心的极化格局特征,佛山中心城区位于节点位置;20 km、100 km整合度模型中广佛中心集聚特征明显;广佛时间地图呈东西方向收缩。② 跨界道路影响方面,通行后越接近交界区域,时间距离偏移越大,广州南部地区与南海、顺德时间成本改善明显。③ 跨界道路通行有利于不同尺度下路网可达性整体水平的提高,能为广佛路、陈村大桥、禺山西等道路分流部分交通流。空间句法与时间地图方法的使用识别了不同尺度上广佛等级差异与交通潜力,且对地理空间进行了时空转换,结论能为今后城市功能整合提供参照,并为相关研究提供新的分析维度和视角。

The influence of cross-border roads on spatio-temporal connection in the city integration areas: Guangzhou-Foshan case

Urban integration can be defined as some stage of adjacent cities development in the region, and transport is an important basis for generating the integration effect. This paper analyzes the spatio-temporal structure characteristics of the Guangzhou-Foshan region and the influence of cross-border roads construction on spatio-temporal connection between Guangzhou and Foshan by using Space Syntax and time-space map method. Findings suggest that the polarization pattern is presented within the Inner Ring Road of Guangzhou in 5 km and 10 km scopes, and the central agglomeration is obvious in 20 km and 100 km scopes based on the integration value in Guangzhou-Foshan model. The time map of Guangzhou-Foshan shrinks significantly in the east-west direction. After the planned roads became passable, the closer the street is to the boundary, the greater the range-displacement is. The time cost of southern Guangzhou city and Nanhai district of Foshan city, Shunde would improve significantly. The planned roads are conducive to improving the overall level of road network accessibility on different scales, which shunt the traffic flow of the western Guangzhou-Foshan roads, Chencun bridge and Yushan west road etc. Compared with the previous urban integration studies, this paper identifies the city grade difference and traffic potential on different scales and makes the space-time transformation of geographical space for Guangzhou-Foshan by using space syntax and time-space map method. These conclusions could be used as a reference for city function integration in the future and provide a new dimension and perspective for the related research.