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Research on enhancement of resilience by building monitoring system considering complex disasters.

Research Project

Project/Area Number 21K04334
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 23010:Building structures and materials-related
Research InstitutionKyoto University

Principal Investigator

Fujita Kohei  京都大学, 工学研究科, 准教授 (40648713)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords複合災害 / 連成振動 / 免震建物 / 地震時応答 / 長周期長時間地震動 / 浸水災害 / 流体解析 / 長周期地震動 / 浸水 / 地震 / 連成解析 / システム同定 / モニタリング / 非構造部材 / 画像計測 / レジリエンス / 損傷同定 / 画像解析
Outline of Research at the Start

本研究では、災害時の重要防災拠点のレジリエンスを高め、事業継続計画(BCP)を高度化することを目的に、地震を含む様々な外的要因によって建物に生じる機能障害を早期に判断するためのモニタリングシステムを構築する。本モニタリングシステムでは、画像センサによる画像データの取得に加えて、次世代センサを組み合わせることで、様々なデータを収集する。収集したデータを建築系ビッグデータとみなし、AI技術と連携することで建物の機能種別や構造部材・非構造部材に応じてそれぞれの損傷度を定量化し、建物全体として要求される機能を維持し回復するための新たな耐震設計法の構築や防災技術の高度化を図る。

Outline of Final Research Achievements

This study focuses on the seismic behavior of buildings in the event of earthquakes occurring in states affected by compound disasters such as tsunamis or heavy rainfall. Analytical investigations and experimental demonstrations were conducted to examine how the degree of inundation affects the behavior of buildings. The target buildings are base-isolated structures, and the study assumes prolonged exposure to long-period seismic motions while fluid remains in the isolation pits. The presence of still fluid was experimentally demonstrated to result in changes in wave height not only due to inertial forces from seismic input but also from movement of the base-isolation slab. Furthermore, through fluid-structure interaction vibration analysis, it was revealed that the seismic performance of base-isolated buildings in submerged states may deteriorate depending on factors such as isolation clearance and inundation depth, leading to increased acceleration of the upper structure.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果を活用することで,都市を構成する建物において様々な災害が同時に発生するというような通常の設計や建物の運用では想定されていない事態が起こったとしても,建物の安全性や機能維持の判断のための建物応答特性を事前に把握することができる。今後は,本研究の成果をさらに展開することで,複合的な災害に対しても様々な対策レシピを建物単体や地域レベルでの事業継続計画の策定などで対応することが可能となることが期待される。

Report

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

    (12 results)

All 2024 2023 2022

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (7 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] EXPLICIT OVERTURNING LIMIT OF RIGID BLOCK WITH MASS ECCENTRICITY IN BUILDINGS SUBJECTED TO NEAR-FAULT GROUND MOTION CONSIDERING COLLISION WITH WALLS2024

    • Author(s)
      TSUCHIDA Hinako、FUJITA Kohei
    • Journal Title

      Journal of Structural and Construction Engineering (Transactions of AIJ)

      Volume: 89 Issue: 816 Pages: 148-156

    • DOI

      10.3130/aijs.89.148

    • ISSN
      1340-4202, 1881-8153
    • Year and Date
      2024-02-01
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Robust optimal damper placement based on robustness index simultaneously considering variation of elastoplastic design criteria and input level2024

    • Author(s)
      Hosoda Mizuki、Fujita Kohei
    • Journal Title

      Frontiers in Built Environment

      Volume: 10 Pages: 01-16

    • DOI

      10.3389/fbuil.2024.1353827

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] OPTIMAL DAMPER PLACEMENT OF STUD-TYPE HIGH-RUBBER DAMPER CONSIDERING DAMPING PERFORMANCE DETERIORATION2024

    • Author(s)
      藤田 皓平、林 達也
    • Journal Title

      Journal of Structural Engineering B

      Volume: 70B Issue: 0 Pages: 163-170

    • DOI

      10.3130/aijjse.70B.0_163

    • ISSN
      0910-8033, 2436-6285
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] ROBUST OPTIMAL DESIGN BASED ON STORY DUCTILITY RATIO OF ELASTIC-PLASTIC BUILDING STRUCTURES WITH UNCERTAIN OIL DAMPERS SUBJECTED TO CRITICAL DOUBLE IMPULSE2023

    • Author(s)
      細田瑞生, 藤田皓平
    • Journal Title

      Journal of Structural Engineering B

      Volume: 69B Issue: 0 Pages: 181-189

    • DOI

      10.3130/aijjse.69B.0_181

    • ISSN
      0910-8033, 2436-6285
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A SIMPLE EVALUATION METHOD FOR SEISMIC RESPONSE UPPER LIMITS OF PLANE FRAME BUILDING MODEL CONSIDERING VARIATIONS IN DAMPING PERFORMANCE OF OIL DAMPERS2023

    • Author(s)
      藤田皓平, 綿谷遼太
    • Journal Title

      Journal of Structural Engineering B

      Volume: 69B Issue: 0 Pages: 172-180

    • DOI

      10.3130/aijjse.69B.0_172

    • ISSN
      0910-8033, 2436-6285
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 基礎免震層への浸水と地震入力を同時に考慮した流体-構造連成解析に基づく免震性能評価(その1 振動台実験及び流体力のモデル化)2024

    • Author(s)
      立石海斗
    • Organizer
      建築学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 基礎免震層への浸水と地震入力を同時に考慮した流体-構造連成解析に基づく免震性能評価(その2 流体-構造連成解析手法と解析結果)2024

    • Author(s)
      藤田皓平
    • Organizer
      建築学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ULTIMATE SCENARIO EVALUATION OF BASE-ISOLATED BUILDINGS SUBJECTED TO FLOODING DISASTER AND SEISMIC INPUT BASED ON STRUCTURE-FLUID INTERACTION ANALYSIS2024

    • Author(s)
      Fujita Kohei
    • Organizer
      18th World Conference of Earthquake Engineering
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 免震ピット浸水を想定した流体計算による流体圧力を外力として受ける免震建物の長周期長時間地震時加速度応答2023

    • Author(s)
      木村太喜
    • Organizer
      日本建築学会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] オイルダンパーを有する制振建物を対象とした伝達関数のフィッティングに基づくシステム同定2023

    • Author(s)
      小宅裕斗
    • Organizer
      日本建築学会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 吊り配管の振動台加振実験による画像モニタリングシステムの精度検証2022

    • Author(s)
      藤田皓平
    • Organizer
      近畿支部研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] 吊り配管を対象とした画像モニタリングシステムの振動台加振実験による精度検証2022

    • Author(s)
      藤田皓平
    • Organizer
      日本建築学会大会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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