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Experimental study on the wave-ice-structure interaction for ice-going ship

Research Project

Project/Area Number 20K04938
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 24020:Marine engineering-related
Research InstitutionOsaka University

Principal Investigator

Sawamura Junji  大阪大学, 大学院工学研究科, 准教授 (90359670)

Co-Investigator(Kenkyū-buntansha) 尾関 俊浩  北海道教育大学, 教育学部, 教授 (20301947)
木岡 信治  国立研究開発法人土木研究所, 土木研究所(寒地土木研究所), 総括主任研究員 (20414154)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords氷海船舶 / 氷荷重 / 波浪影響 / 海氷微視構造 / 波浪 / 模擬氷 / 氷微視構造 / 氷海実験 / 模型船実験
Outline of Research at the Start

北極海での海洋開発および物資輸送による船舶の航行の急増に伴い,氷環境下にある船舶の安全性評価の強化が急務になっている.氷海船舶の安全航行には船舶と氷板との衝突によって引き起こされる氷荷重の推定が必須となる.近年の海氷水面の減退に伴う波浪増加が海氷運動の増加を引き起こし,これが船体に作用する氷荷重を増幅させていると言われており,波浪と氷板の相互影響下にある氷海船舶の氷荷重推定が新たな問題となっている.そこで,本研究では.模擬氷を用いた模型船実験を実施し,波浪-氷板-船体間の氷荷重の発生原因の詳細を実験的に解明する.

Outline of Final Research Achievements

This research investigated the ship-ice-wave interaction for the safe navigation of ice-going ships. 1) The 2D experiment using synthetic ice was conducted to measure the motion of the ice pieces in the regular wave and the fixed structure interaction in order to understand the effect of the regular wave on the ice motion neat the structure. 2) The bending strength of the saline ice was measured when the cantilever plate ice was bended. The relationship between the ice micro structure and the ice bending strength was obtained. Additionally, the synthetic ice which can present the ice bending failure was developed. 3) The synthetic plate ice was used in the experiment of wave-plate ice interaction and the plate ice motion and deformation were measured. The model ship test was conducted to measure the ice force in the regular wave. The relationship between regular wave and ice force in the ship advancing into the ice was obtained.

Academic Significance and Societal Importance of the Research Achievements

波浪と海氷の相互影響に関する研究は古くからあったが,構造物と波浪および海氷の相互影響を考えた研究は殆どなく,波浪―海氷―船体の相互影響の解明を試みる本研究課題は学術的意義がある.また,海氷域で稼働する構造物と海氷との間に発生する様々な現象の解明や評価には,氷海水槽を用いた実験が欠かせない.しかし,世界にある氷海水槽の数は僅かで(20施設ほど),氷海水槽の利用には大きな制限がある.本研究課題の氷海水槽を必要としない模擬氷を用いた波浪中の氷海実験の確立は学術的および社会的意義が大きい.さらに,本研究課題の成果は氷海域での船舶の安全航行の実現に大きく貢献でき,さらには,氷海域の環境保全の一助となる.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (8 results)

All 2023 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 1 results) Presentation (5 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] 規則波中にある小氷片群の運動計測-規則波条件と氷密接度・氷板運動の関係2022

    • Author(s)
      澤村淳司,水島裕人
    • Journal Title

      第38回寒地技術シンポジウム 寒地技術論文・報告集

      Volume: 38

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 海氷の微視構造と曲げ強度の関係 -塩水氷作成時のSeedingがブライン 分布と曲げ強度に与える影響の実験的考察-2022

    • Author(s)
      尾関俊浩,折目啓輔,安達聖,澤村淳司
    • Journal Title

      船舶海洋工学会秋期講演会講演会論文集

      Volume: 35

    • Related Report
      2022 Annual Research Report
  • [Journal Article] 海氷の微視構造と強度特性の関係-海氷ブライン含有量と曲げ強度の関係の実験的考察-2021

    • Author(s)
      布川大暉,尾関俊浩,安達聖,澤村淳司
    • Journal Title

      日本船舶海洋工学会講演会論文集

      Volume: 33

    • NAID

      40022809946

    • Related Report
      2021 Research-status Report
  • [Presentation] Experimental Study on Wave-ice Interaction for Small Ice Floes and Plate Ice in Regular Wave2023

    • Author(s)
      J. Sawamura, H. Mizushima, I. Hamamoto1 and M. Zen
    • Organizer
      Seventh International Symposium on Arctic Research (ISAR7)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 塩水氷の曲げ強度とブライン量および分布の関係性についての実験的研究 -平坦氷作成時のSeedingの効果について-2022

    • Author(s)
      折目啓輔,尾関俊浩,安達聖
    • Organizer
      雪氷研究大会(2022・札幌)
    • Related Report
      2022 Annual Research Report
  • [Presentation] Experimental study on the ice-wave interaction in the small ice floes and regular wave ― Relationship between ice concentration and ice vertical motion2021

    • Author(s)
      Junji SAWAMURA
    • Organizer
      第12回極域シンポジウム(国立極地研究所)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] ブラインチャネルの三次元構造と海氷の曲げ強度の関係に関する実験的研究2021

    • Author(s)
      布川大暉, 尾関俊浩, 安達聖
    • Organizer
      雪氷研究大会(2021・千葉-オンライン)
    • Related Report
      2021 Research-status Report
  • [Presentation] Calculation of Ship Maneuvering Control in Ice‐covered Water2021

    • Author(s)
      Junji Sawamura
    • Organizer
      Arctic Science Summit Week 2021, 19-26 March
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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