58池尻 隆史66Takashi IKEJIRI伊藤 拓海67Takumi ITOジョージタウン（インド・チェンナイ）における旧植民都市空間の変容とその持続可能性に関する研究（2020採択）A study on spatial composition and its sustainability of post colonial cities in India A case study of George Town (Chennai, India)(Project 2020)自然素材を実施した版築－鉄骨合成構造の循環型建築システムの実用化研究（2022採択）Practical Research of Sustainable Architectural System Using Natural Resource of Rammed Earth and Steel Hybrid Structures(Project 2022)本研究はチェンナイのジョージタウンを対象に土地区画・建物・用途から成る都市の空間構成の現状を明らかにし，今後の持続可能性を検討することを目的とした．考察は現存する建物の悉皆的調査に基づくもので，調査結果は都市の現況を記録するとともに，過去からの変遷の様子を示す貴重な資料となった．筆者による20年前の調査と比較して，現況は建築や用途において大きな変化を遂げている一方で，土地区画は従前の状態を比較的保っている．このことは地区の物理的な環境を維持するように機能していると思われるが，一方でその背景である建築や社会の構成は変化しており，植民都市としての遺産は失われつつあることが示されている．The aim of the study was to grasp the current state of the urban spatial structure consisting of land parcels, buildings, and its uses in George Town, Chennai, and to examine its future sustainability. The study was based on a comprehensive survey of existing buildings, and the results not only recorded the current condi-tion of the area, but also served as valuable study materials showing how the area has changed since the past. Compared to the survey in 20 years ago, the current situation has undergone major changes in architecture and its usage, while land parcels have remained relatively unchanged. It seems to be working to maintain the physical environment of the district, but on the other hand, the architecture and social structure that forms its background are changing, and it has been shown that the heritage of the colonial city is being lost.本研究は，土を突き固めた版築の建築物利用の拡大と普及を目指し，耐震性や施工性に優れた建築システムの開発・実用化を目的としている．版築による構造物は，地震力によってひび割れ，脆性的な挙動を示すことがある．地震大国日本で使用する場合，耐震性の確保が必須となる．本研究では，鉄骨部材と組み合わせて合成化し，合成ブロックを提案する．鉄骨部材は土の突き固めの型枠となり，ブロック同士をボルト接合し，組積式の構造体を構成する．北海道網走市内のテストフィールドで，鉄骨骨組を建設し，合成ブロックをボルト接合して実装した．この施工試験において，ブロックの積み方などを変数とし，生産性や作業能率を実証的に検討した．This study aims to expand and promote the use of rammed earth construction in buildings. And it focuses on developing and implementing a building system that excels in seismic resistance and construction feasibility. Structures built using rammed earth construction may exhibit cracking and brittle behavior under seismic loads. Ensuring seismic resilience is essential, especially in Japan as frequent earthquake occurence. In this research, a composite sturctural block is proposed by combining it with steel members. The steel members serve as formwork for rammed earth and are bolted together to form a modular structure each other. A steel frame structure was constructed in a test field in Abashiri City, Hokkaido, and composite blocks were bolted together for implementation. In this construction experiment, variables such as block stacking methods were studied to demonstrate productivity and operational efficiency.
元のページ ../index.html#62