Study On The Spatial Evolution Of Tunxi Old Street Block

Historical commercial district in the city continue to evolve with the changes in cities, and in recent years of development, its spatial form has greatly changed. Author chose Tunxi ancient business centre in Huangshan City downtown and studied on the evolution of spatial form. explore the inherent logic of evolution characteristics. From the perspective of spatial form, author will summarize the reconstruction history of Tunxi old street block, summarizes the modification experience, and learn from it, to provide guidance and support for the modification in the future.First, this paper selects four spatial elements according to the syntactic variables and sets out an analysis of the spatial form from four perspectives respectively such as the land layout, traffic streamline, interface of block, organization of block..Sort out and make a summing of the development of Tunxi ancient business centre.Next, aim at two-dimensional space morphology of block, space syntax analysis software is used to calculate the parameters of integration average depth,control value of roads in this block, by comparing the numerical to reveal the internal law of space form evolution.At last, analysis the internal relation between the development of the block’s space form and the subjective planning intervention and economic or social development, such as politics,economy and culture. Discusses the dynamic mechanism of the evolution of the traditional block’s space form.Summarize the evolution characteristics of Tunxi ancient block’s space form:at the early stage,the old street block developed in self-organizing development model, formed the original stable block road network; After the reform and opening up in under the guidance of the scientific planning of the smaller blocks the reconstruction of the plot, adjustment and improvement, constantly improve, formed the current stable street space connection logic.