一种城市分区的空间理论

发布时间：2018-03-02 16:01

本文选题：城市分区　切入点：空间句法　出处：《国际城市规划》2015年03期 　论文类型：期刊论文

【摘要】：根据社会、经济、认知、功能、交通等,城市常常被分为成不同的地区,而这些分区的形成是否具有形态学意义上的内在空间机制?对此机制的剖析,有助于我们在规划设计实践中建构城市的分区。本文从几何的角度,重点研究了城市街道/分区与其周边地段的相互关联,发现它们融入周边地段的过程存在微小的波动,体现为道路密度在不同尺度上非匀质的变化,大体上导致了"中心—边缘"和"边缘—中心"两种分区模式,分别对应聚集和分散两种活动。在一定程度上,这反映了城市分区的空间几何规律:涌现生成,即分区模式突现于局部街道连通度的变化;尺度浮动,即分区随尺度的变化而变化;远程效应,即分区外部的街道构成也影响分区本身的空间构成。因此,城市分区现象并不是简单的空间分割,其边界也不是固定的;城市分区源于不同尺度的城市空间子网络之间的相互作用,对应于不同规模的社会经济活动;城市分区的空间几何机制源于局部的一维线性空间和全局的二维空间之间的平衡,对应于街道行走和场地占据之间的平衡。
[Abstract]:According to the social, economic, cognitive, functional, traffic and so on, cities are often divided into different regions, and whether the formation of these zones has morphological intrinsic spatial mechanism? The analysis of this mechanism will help us to construct the urban zoning in the practice of planning and design. From the point of view of geometry, this paper focuses on the study of the interrelation between the urban streets / partitions and their surrounding areas. It is found that there is a slight fluctuation in the process of their integration into the surrounding area, which is reflected in the uneven variation of road density at different scales, which generally results in two zonal patterns of "center-edge" and "edge-center". To a certain extent, this reflects the spatial geometric law of urban zoning: emergence generation, that is, the change of local street connectivity, the variation of local street connectivity, and the floating of scale. The remote effect, that is, the street structure outside the zoning also affects the spatial composition of the zoning itself. Therefore, the phenomenon of urban zoning is not a simple spatial segmentation, and its boundaries are not fixed. Urban zoning originates from the interaction between subnetworks of urban space of different scales, corresponding to social and economic activities of different scales, the spatial geometric mechanism of urban zoning is derived from the balance between local one-dimensional linear space and global two-dimensional space. It corresponds to the balance between street walking and site occupation.
【作者单位】：清华大学建筑学院住房和城乡建设部城乡规划管理中心;
【分类号】：TU984.113

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