Study on the residential environment quality and the collaborative formation methods of improving the residential environment in the densely built-up residential areas at the foot of mountains

本研究由五个课题组成。一是山脚下密集建成区住宅单元的设置。为了设置这个单元，在考虑地形和历史条件的情况下，分析了实地调查的结果。此外，通过对函馆、长崎等地坡地的分析，对坡地进行了倾斜角度的划分。此外，通过在神户市长田区上池田区的实地考察，阐明了山脚下密集住宅区公共空间的独特性。二是对居住单元的居住环境质量进行评价。为了确认该单元的有效性，设置了四个评价项目：安全性、舒适性、便利性、可持续性。其次，将可达性作为改善山脚下密集住区居住环境的有效方法之一进行了界定和评价；第三，重点研究了联合住宅单元改造的方法。我们在大阪、京都、神户市联合组织了各城市适用的住房重建规则。通过对每条规则的模拟重构，对每条规则的有效性、优缺点进行了评价。第四部分，通过分析旧址区域之间的相互作用和迁入迁出趋势，评价山脚下密集住区改造的有效性。在本研究的最后，以神户市长田区上池田区为例，模拟了住宅单元重建的协同形成方法，展示了在山脚下密集住区中实现良好评价的居住环境的可能性。

This research consists of five subjects.The first one is the setting of the residential unit of densely built-up areas at the foot of mountains. To set this unit, the result of the fieldwork is analyzed in the consideration of topographical and historical conditions. Moreover, sloping urban area is categorized by the inclination angles through the analysis of sloped area in Hakodate, Nagasaki and so on. Furthermore, the uniqueness of common space in the densely built-up residential areas at the foot of mountains is clarified through the fieldwork in Kamiikeda District, Nagata-Ward, Kobe City.The second one is the evaluation of the residential environment quality at the residential unit. To confirm the validity of the unit, four evaluation items are set : safety, amenity, convenience, sustainability. Then, the accessibility is defined and evaluated as the one item of the effective method to improve the residential environment at densely built-up residential areas at the foot of mountainsThe third one focuses on methods how to reconstruct housing units in coalision. We organize each city's applicable rules of reconstructing housing units in coalition in Osaka, Kyoto, Kobe City. Through the simulating the reconstruction by each rule, the validity, merit, demerit of each rule are evaluated.In the forth one, the effectivity on reconstructing densely built-up residential areas at the foot of mountains is evaluated by the analysis of the interaction among the site area and the tendency of moving-in and out.At the end of this research, the collaborative formation methods of the reconstruction of housing units are simulated to show the possibility of realizing the well-evaluated residential environment in the densely built-up residential areas at the foot of mountains in the case of Kamiikeda District, Nagata-Ward, Kobe City.