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2023 Fiscal Year Final Research Report

Exploring the Evaluation Index of Urban Structure for the Urban Design Strategy aimed at the Compact City

Research Project

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Project/Area Number 20K21029
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 23:Architecture, building engineering, and related fields
Research InstitutionUniversity of Tsukuba

Principal Investigator

Watamabe Shun  筑波大学, システム情報系, 教授 (60212320)

Project Period (FY) 2020-07-30 – 2024-03-31
Keywords情報量損失最小化法 / 相対的人口集中地区 / 城下町 / 街路網 / PLATEAU / 総合設計制度 / VR
Outline of Final Research Achievements

In this study, we first proposed a method for extracting relative population concentration areas (RDIDs) by applying the information loss minimization method to the policentricity index in Metropolitan Form Analysis (MFA).Next, we set 12 indicators to quantify the street network structure for 30 cities (castle towns) that can be compared with the past, and attempted to categorize cities from the perspective of historical changes in urban structure.Furthermore, we focused on a 3D city model (PLATEAU) and attempted to apply Urban Network Analysis, an urban structure evaluation method based on network centrality, to each index, and also tried to reduce the feeling of pressure and discomfort experienced by buildings that apply the comprehensive design system. We clarified this quantitatively through experiments with VR subjects.

Free Research Field

都市計画・建築計画

Academic Significance and Societal Importance of the Research Achievements

相対的人口集中地域(RDID)を計算するプログラムをGIS環境に構築するとともに、これを全国市区町村の5時点の人口データに適応して時系列的な推移と傾向を明らかにした。これらの結果は、社会工学コモンズのデータバンクを通じて広く一般に公開した。また、文脈的に語られてきた城下町の都市空間変容について、ネットワーク構造の観点から定量的に明らかにした。さらに、PLATEAUとVRによる被験者実験の結果から、高容積率化が必ずしも圧迫感を誘発するものではなく、制度によって創出される公開空地を十分に設けることで、不快感は軽減することできることが示された。

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Published: 2025-01-30  

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