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Challenges to Failure Scenario Guided Design of Geotechnical Structures

Research Project

Project/Area Number 23K22853
Project/Area Number (Other) 22H01583 (2022-2023)
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund (2024)
Single-year Grants (2022-2023)
Section一般
Review Section Basic Section 22030:Geotechnical engineering-related
Research InstitutionTohoku University

Principal Investigator

大竹 雄  東北大学, 工学研究科, 准教授 (90598822)

Co-Investigator(Kenkyū-buntansha) 肥後 陽介  京都大学, 経営管理研究部, 教授 (10444449)
糸井 達哉  東京大学, 大学院工学系研究科(工学部), 准教授 (60393625)
吉田 郁政  東京都市大学, 建築都市デザイン学部, 教授 (60409373)
Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2024)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2024: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2023: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2022: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Keywords信頼性工学 / データ科学 / 偶発性荷重 / 破壊シナリオ誘導型設計 / レジリエンス
Outline of Research at the Start

本研究は,土構造物の偶発荷重時設計法の構築を目指している.提案手法は,デジタルツィンのアナロジーを導入し,対象構造物固有の致命的な破壊シナリオを探索することに基礎を置く.探索は,数ケースの設計シナリオ,すなわち,設計入力地震動(地震シナリオ)と設計用地盤モデル(地盤シナリオ)を準備することを意味する.これにより,設計実務者は,従来の確定論的設計と同等の作業により,対象構造物固有の破壊形態を考慮した,破壊シナリオ誘導型の設計が実現できる.これらの設計フレームワークの構築と要素技術開発と実証を行う.

Outline of Annual Research Achievements

本研究は,偶発荷重時の信頼性設計の全体フレームワークを開発する.このフレームワーク構築のための要素技術として,1)致命的な破壊シナリオの発見法,2)最適観測点配置法と即時状態把握法を開発するとともに,3)実河川堤防の被災事例の再現解析に基づいて,提案法の有効性を実証することを目指している.当該年度は,1), 2)の開発のための数理モデルの構築を完了し,3)を実施するための大規模データベースの整備を実施した.
1)については,動的モード分解に独自の工夫を施して,地震動作用を受ける地盤構造物の地震応答関係のサロゲイトモデリングの構築を行なった.これによる,2)で生成される多様な入力地震動波形に対する地震応答時刻歴波形を短時間で高精度に計算できることが可能になった.2)については,地震動波形を非定常パワースペクトルに変換した上で,特徴抽出を行い波形のクラスタリング法を構築した.クラスタリングからの代表波形のプッシュオーバー解析により効果的に入力波形を生成し,できるだけ少ない数値解析で,地震動の確率的特性を高精度に同定できる手法を開発した.
なお,提案している数理モデルを国際会議で発表し,関連分野の多くの研究者と意見交換をして,モデル改善のための情報収集を行なった.

Current Status of Research Progress
Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

1)致命的な破壊シナリオの発見法,2)最適観測点配置法と即時状態把握法に関する数理モデルを構築し,簡易な問題設定に基づいた有効性検証を完了している.また,最終的な総合検討である,3)実河川堤防の被災事例の再現解析へ向けてのデータ整備も順調であり,次年度はフレーム全体の妥当性確認作業を順次進める予定である.

Strategy for Future Research Activity

構築した数理モデルとその有効性検証結果をまとめた学術論文を投稿するとともに,国際会議での発表を通じて国内外に公表する予定である.このプロセスを通じて,情報収集につても,提案モデルの改善を継続的に行う.そのプロセスと並行して,大規模な実構造物への適用を行い,フレームワークの妥当性検証を進める予定である.また,施設管理者へのヒアリングを実施しながら,実用性の高いモデルとフレームワークの構築を目指す.

Report

(2 results)
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • Research Products

    (19 results)

All 2024 2023 2022

All Journal Article (13 results) (of which Peer Reviewed: 11 results,  Open Access: 4 results) Presentation (4 results) (of which Int'l Joint Research: 2 results) Book (1 results) Funded Workshop (1 results)

  • [Journal Article] A METHOD FOR EVALUATING MATERIAL UNCERTAINTIES IN OVERTOPPING EROSION ANALYSIS OF RIVER LEVEES2024

    • Author(s)
      KODAMA Shinnosuke、HIRANO Daichi、ONDA Shinichiro、OTAKE Yu、HIGO Yosuke
    • Journal Title

      Japanese Journal of JSCE

      Volume: 80 Issue: 16 Pages: n/a

    • DOI

      10.2208/jscejj.23-16155

    • ISSN
      2436-6021
    • Related Report
      2023 Annual Research Report
  • [Journal Article] FUNDAMENTAL STUDY ON SIGNAL RECONSTRUCTION AND FUTURE PREDICTION OF DIFFERENTIAL SETTLEMENT PROCESSES IN AN OFFSHORE AIRPORT USING DYNAMIC MODE DECOMPOSITION2024

    • Author(s)
      畑井 向・大竹 雄・高野 大樹・杉山 友理・吉田郁政
    • Journal Title

      Japanese Journal of JSCE

      Volume: 80 Issue: 15 Pages: n/a

    • DOI

      10.2208/jscejj.23-15010

    • ISSN
      2436-6021
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] DATA-DRIVEN SEISMIC RESPONSE ANALYSIS BASED ON DYNAMIC MODE DECOMPOSITION WITH TIME-DELAY EMBEDDING2024

    • Author(s)
      塩井瑛大,大竹雄,吉田郁政,村松正吾
    • Journal Title

      Japanese Journal of JSCE

      Volume: 80 Issue: 15 Pages: n/a

    • DOI

      10.2208/jscejj.23-15006

    • ISSN
      2436-6021
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] RELIABILITY ASSESSMENT OF MULTIVARIATE SOIL PROPERTIES UNDER OFFSHORE AIRPORT USING LARGE-SCALE GENERIC DATABASE AND HIERARCHICAL BAYESIAN MODEL2024

    • Author(s)
      斉藤大雅・大竹雄・Stephen WU・高野大樹・杉山友理・吉田郁政
    • Journal Title

      Japanese Journal of JSCE

      Volume: 80 Issue: 15 Pages: n/a

    • DOI

      10.2208/jscejj.23-15009

    • ISSN
      2436-6021
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Estimation of foundation ground layer utilizing ground surface elevation in Gaussian process regression2023

    • Author(s)
      Tsuda, Y., Tomizawa, Y., Yoshida, I., Wada M., Suemasa N., and Otake Y.
    • Journal Title

      Computers and Geotechnics

      Volume: Vol.160 Pages: 105548-105548

    • DOI

      10.1016/j.compgeo.2023.105548

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fundamental Study on Reliability Updating for Breakwater Covered with Wave Dissipating Block Based on Inspection Results by Application of Response Surface Method2023

    • Author(s)
      Masahiro Takenobu; Yasumitsu Mikami; Shogo Miyajima; Masafumi Miyata; Yu Otake
    • Journal Title

      The 33rd International Ocean and Polar Engineering Conference

      Volume: ISOPE-I-23 Pages: 405-405

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Data-driven approximation of geotechnical dynamics to an equivalent single-degree-of-freedom vibration system based on dynamic mode decomposition2023

    • Author(s)
      Shioi Akihiro、Otake Yu、Yoshida Ikumasa、Muramatsu Shogo、Ohno Susumu
    • Journal Title

      Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards

      Volume: 17 Issue: 1 Pages: 77-97

    • DOI

      10.1080/17499518.2023.2184479

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparison of methods considering ground surface elevation in spatial distribution estimation of bedrock using Gaussian process regression2023

    • Author(s)
      津田悠人,吉田郁政,大竹雄
    • Journal Title

      Artificial Intelligence and Data Science

      Volume: 4 Issue: 3 Pages: 254-264

    • DOI

      10.11532/jsceiii.4.3_254

    • ISSN
      2435-9262
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reliability Estimation Method by Adaptive Surrogate Models Using Gaussian Process Regression and Importance Sampling2023

    • Author(s)
      中村朋佳, 堀田海陽,吉田郁政, 大竹雄
    • Journal Title

      Artificial Intelligence and Data Science

      Volume: 4 Issue: 3 Pages: 205-214

    • DOI

      10.11532/jsceiii.4.3_205

    • ISSN
      2435-9262
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Basic Study on Adaptive Surrogate Model for Reliability Analysis and Bayesian Update2023

    • Author(s)
      堀田海陽, 中村朋佳, 吉田郁政,大竹雄
    • Journal Title

      Structural Safety and Reliability: Proceedings of the Japan Conference on Structural Safety and Reliability (JCOSSAR)

      Volume: 10 Issue: 0 Pages: 31-38

    • DOI

      10.60316/jcossar.10.0_31

    • ISSN
      2759-0909
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] PROBABILISTIC PERFORMANCE EVALUATION FOCUSING ON RELATIVE DISPLACEMENT IN THE NORMAL DIRECTION OF SEISMICALLY STRENGTHENED QUAYWALLS AFTER LEVEL 2 EARTHQUAKE2023

    • Author(s)
      SUMIOKA Naoki、FUKUNAGA Yusuke、MIYATA Masafumi、OTAKE Yu
    • Journal Title

      Japanese Journal of JSCE

      Volume: 79 Issue: 18 Pages: n/a

    • DOI

      10.2208/jscejj.23-18151

    • ISSN
      2436-6021
    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
  • [Journal Article] REAL-TIME RECONSTRUCTION SIMULATION BASED ON AUTONOMOUS BASIS FUNCTION SELECTION2023

    • Author(s)
      OTAKE Yu、SHOJI Taiga、HIGO Yosuke、YOSHIDA Ikumasa
    • Journal Title

      Japanese Journal of JSCE

      Volume: 79 Issue: 15 Pages: n/a

    • DOI

      10.2208/jscejj.22-15013

    • ISSN
      2436-6021
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Challenges in geotechnical design revealed by reliability assessment: Review and future perspectives2022

    • Author(s)
      Otake Yu、Honjo Yusuke
    • Journal Title

      Soils and Foundations

      Volume: 62 Issue: 3 Pages: 101129-101129

    • DOI

      10.1016/j.sandf.2022.101129

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Fundamental Study on Reliability Updating for Breakwater Covered with Wave Dissipating Block Based on Inspection Results by Application of Response Surface Method2023

    • Author(s)
      Masahiro Takenobu; Yasumitsu Mikami; Shogo Miyajima; Masafumi Miyata; Yu Otake
    • Organizer
      The 33rd International Ocean and Polar Engineering Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Estimation of Spatial Distribution Considering Indirect Data Using Gaussian Process Regression2023

    • Author(s)
      Yuto Tsuda, Yukihisa Tomizawa, Ikumasa Yoshida, Yu Otake
    • Organizer
      Geo-Risk 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Exploring the feasibility of improving multivariate soil property estimation through the development of a Big indirect database in Japan2023

    • Author(s)
      Yu Otake, Taiga, Saito, Stephen Wu, Daiki Takano, Ikumasa Yoshida
    • Organizer
      Joint Workshop on Future of Machine Learning in Geotechnics (FOMLIG) & Use of Urban Geoinformation for Geotechnical Practice (UUGGP)
    • Related Report
      2022 Annual Research Report
  • [Presentation] An Examination Using Hierarchical Bayesian and Principal Component Analysis2023

    • Author(s)
      Taiga, Saito, Yu Otake, Stephen Wu, Daiki Takano, Ikumasa Yoshida
    • Organizer
      Joint Workshop on Future of Machine Learning in Geotechnics (FOMLIG) & Use of Urban Geoinformation for Geotechnical Practice (UUGGP)
    • Related Report
      2022 Annual Research Report
  • [Book] Reliability Analysis with Reduced Order Model2023

    • Author(s)
      yu otake Taiga saito
    • Total Pages
      33
    • Publisher
      CRC Press
    • ISBN
      9781003333586
    • Related Report
      2023 Annual Research Report
  • [Funded Workshop] Joint Workshop on Future of Machine Learning in Geotechnics (FOMLIG) & Use of Urban Geoinformation for Geotechnical Practice (UUGGP)2023

    • Related Report
      2022 Annual Research Report

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Published: 2022-04-19   Modified: 2024-12-25  

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