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Construction of Measures to Mitigate Landslide Damage by Controlling the Structure and Plan Configuration of Housing and the Way of Living

Research Project

Project/Area Number 21K18757
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 InstitutionHokkaido University

Principal Investigator

NAKASHIMA TADAYOSHI  北海道大学, 工学研究院, 准教授 (60557841)

Co-Investigator(Kenkyū-buntansha) 小篠 隆生  北海道大学, 工学研究院, 准教授 (00250473)
植松 武是  北海学園大学, 工学部, 教授 (60462347)
Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords土砂災害 / 個別要素法 / ドローン / 点群データ / アンケート調査 / 倒壊 / 減災戦略 / 人的被害 / 斜面崩壊 / 室内空間 / 建物倒壊 / 倒壊メカニズム / 死者 / 負傷者 / 建物倒壊メカニズム / 生存可能空間 / 土砂速度
Outline of Research at the Start

本研究は、土砂災害に伴う建物倒壊メカニズムと減災方策の立案を建物・住民の側から提案するものである。本邦においては国土交通省によれば、土砂災害危険地域に人口の4.9%が住んでいると推定されておりこれだけの規模を移住や避難のみで対策を行うには不可能である。土砂災害による建物倒壊メカニズムを解明し、避難が間に合わない場合においても人命だけは守るような対策を住宅や世帯を対象にした視点で構築する必要がある。建築構造や住まい方等、構造、計画、防災的視点から内部空間損失率を低減または制御し、新たな減災手法を提案を行う。

Outline of Final Research Achievements

This study aims to formulate new disaster mitigation measures by conducting building collapse simulations that take into account not only the structure of the house and the planar arrangement of rooms, etc., but also the way in which the house is lived, and by clarifying the collapse process. Specifically, the first isA questionnaire survey was conducted on households living in houses on slopes to understand the actual conditions of the houses and households. Second, a 3D model of the slopes and houses was constructed using the plan view of the houses obtained from the questionnaire survey and the slope information obtained from the results of the drone aerial photography survey. Third, the discrete element method was used to collide the houses with earth and sand, and the collapse mechanism of the houses was clarified. Finally, methods to reduce the risk of human casualties were studied with reference to the collapse mechanism.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は、国民の約5%が居住している土砂災害の危険を有する地域において、人的被害発生リスクを低減させる施策を立案すべく、建物倒壊過程を明らかにした。また、この結果を用い建物の倒壊時における人的被害発生危険性の高い居室を明らかにするとともに、住宅を含む現有の建物のリスク軽減や新設時において有益な情報となる斜面近傍の建物において土砂災害による人的被害発生リスクを軽減するための住まい方について提案を行った。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (7 results)

All 2024 2023 2022

All Journal Article (4 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (3 results)

  • [Journal Article] BUILDING DAMAGE ASSESSMENT MODEL USING AI AND DAMAGE RATE EVALUATION BY VIDEO FROM VEHICLE MOUNTED CAMERA2024

    • Author(s)
      OSASA Kota、KATO Keisuke、TAKASE Yuya、NAKASHIMA Tadayoshi
    • Journal Title

      AIJ Journal of Technology and Design

      Volume: 30 Issue: 74 Pages: 548-552

    • DOI

      10.3130/aijt.30.548

    • ISSN
      1341-9463, 1881-8188
    • Year and Date
      2024-02-20
    • Related Report
      2023 Annual Research Report
  • [Journal Article] HOUSING RECONSTRUCTION PROCESS AND DEMOGRAPHIC DYNAMICS AFTER THE 2018 HOKKAIDO EASTERN IBURI EARTHQUAKE2024

    • Author(s)
      ISHII Akira、NAKASHIMA Tadayoshi
    • Journal Title

      Journal of Architecture and Planning (Transactions of AIJ)

      Volume: 89 Issue: 816 Pages: 320-329

    • DOI

      10.3130/aija.89.320

    • ISSN
      1340-4210, 1881-8161
    • Year and Date
      2024-02-01
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 人口密度に追随する街区内建築物量が街区へ与える影響評価2023

    • Author(s)
      中田健斗, 中嶋唯貴, 小篠隆生
    • Journal Title

      地域施設計画研究(CD-ROM)

      Volume: 41 Pages: 147-156

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of an estimation method for accidental hypothermia risk due to cold exposure in disasters triggered by earthquakes and tsunamis2023

    • Author(s)
      Iida Akito、Nakashima Tadayoshi、Okada Shigeyuki
    • Journal Title

      International Journal of Disaster Risk Reduction

      Volume: 96 Pages: 103999-103999

    • DOI

      10.1016/j.ijdrr.2023.103999

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 斜面近傍地の住宅特性の調査と土砂災害に伴う建物倒壊シミュレーションの試み2023

    • Author(s)
      中嶋唯貴 , 小篠隆生 , 小林純平
    • Organizer
      自然災害学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 平成 30 年北海道胆振東部地震からの住まい再建・改修過程2023

    • Author(s)
      石井旭 , 中嶋唯貴
    • Organizer
      日本建築学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 個別要素法を用いた土砂災害による木造家屋倒壊メカニズムの基礎的検討2022

    • Author(s)
      小林純平,中嶋唯貴,小松陸歩
    • Organizer
      地域安全学会
    • Related Report
      2022 Research-status Report

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Published: 2021-07-13   Modified: 2025-01-30  

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