伝統的町並みにおける遮蔽縁と出現要素に着目した空間構成の特徴

<p> This study aimed to clarify the characteristics of the change in the appearance of the streets and the spatial composition of Shinbashi Street, Gion-Shinbashi district of Kyoto.</p><p> We proposed a method for quantitatively analyzing by extracting the occluding edges and the elements that appeared using a 3D-model created by CAD software. The viewpoints were arranged on Shinbashi Street in every 1.8 m, and the number of elements that appeared and their change by type were analyzed for a total of 80 viewpoints. The findings are as follows:</p><p>  Viewpoints where three or more elements were appeared, the elements were appeared from behind protruding into the street, appearing the entrance of shops or alleys. At that time, the peculiar elements that didn’t appear in other places could be seen. These elements were often seen on the north side; the townscape had a space composition that greatly changed its appearance and revealed the peculiarity of some of the elements.</p><p>  Lattice doors and walls, which are building elements comprising the entrance of townhouses and alleys, appeared more than 25 times from the 80 viewpoints implying these elements appeared frequently.</p><p> Next, distances from the viewpoints to the occluding edges and the elements that appeared were measured; in addition, types of combination of occluding edge and types of elements were analyzed. Those tendencies were as follows:</p><p>  Four types of combinations of occluding edges were found. Among them, occluding edges |: are those only in the vertical direction; ⊥: are combinations of occluding edges in the vertical direction and the moving direction, which are the main combinations. On both sides of the street are areas where townhouses have/don’t have komayose, and the main occluding edge combinations also change at the change point between these areas.</p><p>  From the wall side of the renovated buildings on the north side of the street, or the wing wall separating the entrance of the alley and the neighboring house, and from the projecting lattice window in front of the townhouse that operates a store, multiple elements appear five or more viewpoints. In other words, these areas cause significant changes in the appearance of the streets because different elements appear from the distant viewpoint to the nearby viewpoint.</p><p>  Many elements appear from the back of the wing wall or the projecting lattice window and the komayose. However, when elements appear from the back of only the wall, since it cannot be seen in a traditional townhouse, walls that overhang the streets of the reconstructed building are heterogeneous for traditional townscapes. Furthermore, in adjacent two townhouses, which are built around the area, meters are placed behind the projecting lattice window, and they appear in the nearby viewpoint while walking.</p><p> Finally, targeting a combination of 48 occluding edges where an element appears, the appearance patterns of elements were classified. Furthermore, by the arrangement patterns of the edges and the elements that appeared in each appearance patterns, we clarified the following.</p><p>  Cases where only one element appears and cases where multiple elements appear from multiple viewpoints are the main appearance patterns. In the case of a continuous appearance, the elements arranged on the far side of the street and dispersedly arranged with respect to the moving direction. Furthermore, since the building elements and the arrangement elements are mixed in many cases, the size of the elements also varies.</p><p>  There are few cases where the arrangement elements occasionally appear from occluding edges ⊥, and therefore, these elements are placed higher than the komayose.</p>