CAJ | 학술논문

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。
근거사회、경제、인지、공능、교통등，성시상상피분위성불동적지구，이저사분구적형성시부구유형태학의의상적내재공간궤제？대차궤제적부석，유조우아문재규화설계실천중건구성시적분구。본문종궤하적각도，중점연구료성시가도/분구여기주변지단적상호관련，발현타문융입주변지단적과정존재미소적파동，체현위도로밀도재불동척도상비균질적변화，대체상도치료“중심—변연”화“변연—중심”량충분구모식，분별대응취집화분산량충활동。재일정정도상，저반영료성시분구적공간궤하규률：용현생성，즉분구모식돌현우국부가도련통도적변화；척도부동，즉분구수척도적변화이변화；원정효응，즉분구외부적가도구성야영향분구본신적공간구성。인차，성시분구현상병불시간단적공간분할，기변계야불시고정적；성시분구원우불동척도적성시공간자망락지간적상호작용，대응우불동규모적사회경제활동；성시분구적공간궤하궤제원우국부적일유선성공간화전국적이유공간지간적평형，대응우가도행주화장지점거지간적평형。
A city is usually partitioned into different parts according to socio-economic, perceptive, functional, or trafifc variables. However, are those parts created by any kind of spatial mechanism in terms of morphology? To answer this question will enable us to build urban parts in the practice of urban planning and design. From the perspective of geometry, this paper focuses the attention on the way in which urban streets/parts are spatially embedded into their surroundings with an increase of radius, and this process is called the embeddedness trajectory. Tiny deviations–or called small disturbances–identiifed on the embeddedness trajectory relfect the discontinuities in the change rate of street densities with radii, and this is embodied as the centre-to-edge and the edge-to-centre patterns, corresponding to the phenomena of aggregation and diffusion. To some extent, this suggests several effects in the formation of urban parts. The ifrst is the emergence effect, meaning that urban parts arise from the change in interconnectivity of streets;the second is the scaling effect, denoting that the parts vary with the scale in which we observe them;the third is the remote effect, representing that the spatial formation of the parts are also affected by the structuring of their surroundings. In this sense, urban parts do not simply result from the partitioning of space, or their boundaries are not ifxed either. On the contrary, they arise from the interaction among the different scales of sub-networks in which they are generated, and therefore they correspond to the different scales of socio-economic activities. This implies the basic geometric question of how one-dimensional linear spaces on the local level are arranged to occupy two-dimensional places on the global level, or of how to balance two kinds of activities, namely street walking and place occupation.