Study of compact city planning based on disaster risk

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K14262
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 22050:Civil engineering plan and transportation engineering-related
• Research Institution: Shinshu University
• Principal Investigator: Morimoto Eiji 信州大学, 学術研究院工学系, 助教 (60899326)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 立地適正化計画 / 都市機能誘導区域 / 居住誘導区域 / 浸水想定 / 実被害 / 人口維持 / 都市機能補完

Outline of Final Research Achievements

The location normalization plan has been formulated to guide facilities and the population. The plan allows for the establishment of urban function induction areas and residence induction areas. However, there are municipalities that include areas with high disaster risk in these areas. This study examines the reduction of disaster risk and the reduction of residence induction areas. The purpose of this study is to obtain reference information for the realization of both disaster risk reduction and compact city.
It was found that the population density can be maintained or improved by reducing the size of the residence induction areas based on the flood depth and evacuation distance. It was also found that some of the core areas that had been able to secure facilities through coordination between core areas may not be able to do so after a disaster. The results suggest the importance of the layout and coordination of urban functions in consideration of disaster risk.

Free Research Field

都市計画

Academic Significance and Societal Importance of the Research Achievements

研究成果の学術的意義としては，誘導区域縮小を災害と人口の観点から検討することでなかなか進まない誘導区域縮小に向けた一つの方向性を示したこと，将来予測を実施する研究の基となる現状の誘導区域内の施設と人口の関係を示したことが挙げられる．
また社会的意義としては，今後立地適正化計画を策定・改定する際の参考情報として，誘導区域設定する際に一定以上の災害リスクを除いた場合のメリットや方法論を提示したこと，誘導区域内の施設を維持するための人口の目安を提示したことが挙げられる．