分形思维下城市空间形态聚集性研究与更新启示——以汕头小公园传统街区为例

Research and Optimization of Urban Spatial Form Aggregation under Fractal Thinking:A Case Study of the Shantou Small Park Open Area

采用改良传统的城市分形集聚维数测算方法对传统街区的空间形态进行量化分析。通过比对传统半径维数与路网集聚维数之间的差异性,分析当下汕头小公园传统街区的城市空间集聚情况。基于城市分形理论与传统街区改造需要,从城市空间形态的集聚性探讨还原城市肌理与修复街巷空间对保护传统街区的重要性。提出多层级重构街区肌理,小尺度赋活复合空间的优化方法优化街区保护手段;提出多时段丰富街区体验,各维度进行生态补充的优化方法提高街区整体空间品质。验证了基于路网集聚维数对传统分维测算方法有修正作用,对汕头小公园传统街区的细化修复有一定指导意义。

A modified traditional urban fractal agglomeration dimension measurement method is used to quantify the spatial patterns of traditional neighborhoods.By comparing the difference between the traditional radius dimension and the road network agglomeration dimension,the urban spatial agglomeration of the traditional neighborhoods in Shantou Small Park is analyzed at present.Based on the urban fractal theory and the need for transformation of traditional neighborhoods,the importance of restoring urban texture and street space to protect traditional neighborhoods is explored from the agglomeration of urban spatial morphology.The optimization method of reconstructing neighborhood texture at multiple levels and activating composite space at small scales is proposed to optimize the means of neighborhood protection;the optimization method of enriching neighborhood experience at multiple time periods and ecological supplementation in each dimension is proposed to improve the overall spatial quality of the neighborhood.It is verified that the traditional dimensional measurement method based on the road network agglomeration dimension has a corrective effect,which is a guide to the refi nement and restoration of traditional neighborhoods in Shantou small parks.