基于空间句法的上海典型片区形态演变和评估

采用图形分析法分析了1980年以来上海市南京西路片区各个街区城市肌理和城市空间特征值的演变.基于空间句法理论对街区空间拓扑参数进行了定量计算,并结合城市空间特征值对片区空间形态进行了综合定量评估.结果表明:以商业化为主导的大城市中心城区更新运动使街区空间形态向肌理粗糙、街巷稀松、高强度和相对孤立特征演变,并且不同的更新程度对街区空间形态产生的影响不甚相同.最后,提出在城市中心区更新过程中应注意空间多样性建设和对城市传统文化和传统业态的保育.

Evolution and Evaluation of Urban Form Based on Space Syntax in Shanghai

The urban form of Shanghai neighbourhood was examined as it evolved from 1984 to 2015 in the context of urban renewal. The urban form was evaluated comprehensively based on space syntax as well. The effect of urban renewal on urban spatial was revealed. It implies that the urban form affected by urban renewal, which is dominated by commercialization, is characterized as grain urban pattern, lax street network, high intensity development and neighbourhood isolation. The urban form of different blocks is related with various degree of renewal process. Finally, it is found that the construction of spatial diversity and the conservation of traditional urban culture and business should be paid more attention in the process of urban renewal in downtown area.