SONG Yacheng, HAN Dongqing, PANG Zhiyu, SONG Zhehao, DONG Yinan

Keywords： urban renewal; residential historical district; spatial configuration; morphological evaluation; dynamic decision-making

Abstract：

The urban renewal of residential historical districts has the characteristics of small scale and progressive. Facing the problems that morphological structure is difficult to identify and space regeneration is difficult to decide, this paper applies the method of spatial configuration to build an integrated cognition of the street network structure and its structure with the plot area. Firstly, based on the clustering of three indicators of depth, connectivity and low connection rate, the configuration level of the street network is divided. On this basis, the configuration level of the plot area is obtained by combining the structural relationship between the plot and the street. Secondly, this method is applied to the Hehuatang and Diaoyutai areas in Nanjing, and the characteristics of morphological structure are quantitatively presented. Finally, it makes judgments and suggestions on the practical problems of upper planning implementation, commercial development site selection, community facilities improvement, and historical resource utilization, and it provides planning implementation suggestions for pre-development and guides the selection and distribution of building types. This method can not only provide a scientific basis for the morphological understanding and renewal design of residential historical areas, but also has the potential to be further applied to development of technical tools such as early decision-making, multi-role participation and interaction, and dynamic continuous control.?

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