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Study on investigate the relation between the soil properties of volcanic soil and ground disaster.

Research Project

Project/Area Number 18H01529
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 22030:Geotechnical engineering-related
Research InstitutionUtsunomiya University

Principal Investigator

UNNO TOSHIYASU  宇都宮大学, 地域デザイン科学部, 准教授 (50570412)

Co-Investigator(Kenkyū-buntansha) 松丸 貴樹  公益財団法人鉄道総合技術研究所, 構造物技術研究部, 主任研究員 (00425927)
風間 基樹  東北大学, 工学研究科, 教授 (20261597)
清原 雄康  八戸工業高等専門学校, その他部局等, 准教授 (20369911)
菊本 統  横浜国立大学, 大学院都市イノベーション研究院, 准教授 (90508342)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2020: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2019: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Keywords火山灰質土 / 粒子破砕 / 不飽和 / 液状化 / 流動性崩壊 / 非塑性細粒分 / 軽石 / 模型実験 / 繰返しせん断試験 / 降雨実験 / 振動台実験 / 火山灰質粗粒土 / 不飽和土 / 中空ねじり試験 / 三軸試験 / 土砂災害 / 火山灰土 / 特殊土 / 破砕性土 / 斜面災害 / 地震 / 豪雨
Outline of Final Research Achievements

This study investigates the vulnerability of volcanic ash soils, classified as problem soils, to earthquakes and heavy rainfall. Under the soil mechanics approach, the unique properties of volcanic ash soils are examined to determine how they affect the mechanism of ground disasters.The methods used in the study were elemental shear tests, model embankment tests, and the development of a numerical model.
The volcanic ash soils focused on in this study have two characteristics: fragile soil particle breakage and high water retention. We investigated how these two characteristics affect the behavior of the soil during a disaster, such as liquefaction, mad flow failure, Collapse, etc. As a result, it was found through various tests and numerical analyses that these two unique soil properties have the effect of contributing to the damage of volcanic ash coarse-grained soil in the event of a ground disaster.

Academic Significance and Societal Importance of the Research Achievements

従来,定性的に捉えられてきた火山灰質土の災害被災時の被害拡大について,本研究では,要素せん断試験や模型実験,数値モデルの開発を通し土質力学的見地から,火山灰質土のその特異な静的,動的力学挙動の把握と災害時の因果関係について報告している.
これらは自然災害時における火山灰質土地盤の被災予測や対策工法の決定に有益な情報を与えるものである.なお,本研究中に2018年北海道胆振東部地震(2018)や令和元年東日本台風(2019年)にて北海道,関東の火山灰質土分布地域が被災した.研究代表者,分担者はこれら災害の学術調査団に参加し本研究によって得られた知見を被災メカニズム把握に活用した.

Report

(4 results)
  • 2021 Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (27 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (3 results) Journal Article (18 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results) Presentation (6 results) (of which Invited: 1 results)

  • [Int'l Joint Research] University of Auckland(ニュージーランド)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Lampung University(インドネシア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Auckland(ニュージーランド)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 2018年北海道胆振東部地震で被害を受けた火山灰質土の不飽和液状化試験の数値解析2021

    • Author(s)
      松丸貴樹, 海野寿康, 緑川雄介
    • Journal Title

      土木学会論文集A1(構造・地震工学)

      Volume: 77-4

    • NAID

      130008067186

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] PHYSICAL AND MECHANICAL PROPERTIES OF VOLCANIC SOILS DAMAGED IN THE 2018 HOKKAIDO IBURI EASTERN EARTHQUAKE2020

    • Author(s)
      MIDORIKAWA Yusuke、UNNO Toshiyasu、KAMURA Akiyoshi、SENTO Noriaki、KAZAMA Motoki
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE))

      Volume: 76 Issue: 4 Pages: I_741-I_754

    • DOI

      10.2208/jscejseee.76.4_I_741

    • NAID

      130007897898

    • ISSN
      2185-4653
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 2018年北海道胆振東部地震で被害を受けた火山灰質土の物理特性および力学特性2020

    • Author(s)
      緑川雄介,海野寿康,加村晃良,仙頭紀明,風間基樹
    • Journal Title

      土木学会論文集A1(構造・地震工学)地震工学論文集

      Volume: 76(4)

    • NAID

      130007897898

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 三軸繰返し荷重作用時の砂や各種改良しらす土の挙動と基準化累積損失エネルギーによる評価2020

    • Author(s)
      清原雄康
    • Journal Title

      地盤工学ジャーナル

      Volume: 15(1) Pages: 15-24

    • NAID

      130007823102

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cyclic shear deformation behavior of unsaturated soil with varying pore air and water state2019

    • Author(s)
      Toshiyasu Unno, Yusuke Midorikawa・Afifah, Yasmin Binti Zakaria
    • Journal Title

      7th lnternational Conference on Earthquake Geotechnical Engineering (VII ICEGE)

      Volume: 1 Pages: 5410-5418

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Simulation on liquefaction of unsaturated compacted soils - effect of compaction degree -2019

    • Author(s)
      Srinil, C., Kikumoto, M. and Komolvilas, V.
    • Journal Title

      7th lnternational Conference on Earthquake Geotechnical Engineering (VII ICEGE)

      Volume: 1 Pages: 5095-5103

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 水分状態を変化させた不飽和土の繰返しせん断変形特性2019

    • Author(s)
      海野寿康, 緑川雄介
    • Journal Title

      日本地震工学会論文集

      Volume: 19(5) Pages: 170-183

    • NAID

      130007719053

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 低塑性細粒土の繰返しせん断履歴による体積圧縮挙動2019

    • Author(s)
      柳田匡慶, 海野寿康
    • Journal Title

      日本地震工学会論文集

      Volume: 19(5) Pages: 21-33

    • NAID

      130007719116

    • Related Report
      2019 Annual Research Report
  • [Journal Article] 基準化累積損失エネルギーによる砂や各種しらす土の繰返し挙動評価2019

    • Author(s)
      清原 雄康
    • Journal Title

      エネルギーに基づく液状化予測手法に関するシンポジウム委員会活動報告書及びシンポジウム論文集

      Volume: - Pages: 359-365

    • Related Report
      2018 Annual Research Report
  • [Journal Article] ベントナイト15%混合八戸しらす土のせん断強度特性2019

    • Author(s)
      清原 雄康, 三浦亮太
    • Journal Title

      平成30年度土木学会東北支部技術研究発表会講演概要集

      Volume: -

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 繰返しせん断に伴う火山灰質砂の粒子破砕に関する基礎的研究2019

    • Author(s)
      齋藤日向子, 海野寿康,吉直卓也
    • Journal Title

      第46回土木学会関東支部技術研究発表会講演概要集

      Volume: -

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 2018年北海道胆振東部地震で被害を受けた斜面に分布する火山灰質土の非排水せん断特性2019

    • Author(s)
      橋本拓海,加村晃良,株木宏明,風間基樹
    • Journal Title

      平成30年度土木学会東北支部技術研究発表会講演概要集

      Volume: -

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 低飽和度下における二戸しらすの繰返し挙動に及ぼす飽和度の影響2019

    • Author(s)
      粒来 真優子, 清原 雄康
    • Journal Title

      平成30年度土木学会東北支部技術研究発表会講演概要集

      Volume: -

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 水分状態を変化させた不飽和土の繰返しせん断変形特性2018

    • Author(s)
      海野寿康, 緑川雄介
    • Journal Title

      第15回日本地震工学シンポジウム講演論文集

      Volume: - Pages: 2309-2318

    • NAID

      130007719053

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 2016年熊本地震で被害を受けた宅地地盤における火山灰質粘性土の地震時せん断挙動について2018

    • Author(s)
      泉谷聡志,加村晃良,金鍾官,佐藤真吾,風間基樹
    • Journal Title

      第15回日本地震工学シンポジウム講演論文集

      Volume: - Pages: 2536-2545

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 低塑性細粒土の繰返しせん断履歴による体積圧縮挙動2018

    • Author(s)
      柳田匡慶, 海野寿康
    • Journal Title

      第15 回日本地震工学シンポジウム講演論文集

      Volume: - Pages: 2801-2810

    • NAID

      130007719116

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 飽和田子しらすの単調および繰返しせん断挙動と浸透型薬液による改良効果2018

    • Author(s)
      清原 雄康
    • Journal Title

      第61回地盤工学シンポジウム発表論文集

      Volume: - Pages: 9-14

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 不飽和硅砂7号の非排気繰返しせん断挙動と累積損失エネルギー2018

    • Author(s)
      清原雄康,風間基樹
    • Journal Title

      第53回地盤工学研究発表会平成30年度発表講演集

      Volume: - Pages: 731-732

    • Related Report
      2018 Annual Research Report
  • [Presentation] 飽和状態で同一挙動を示す不飽和土の三軸試験の数値シミュレーション2020

    • Author(s)
      松丸貴樹 , 海野寿康 , 緑川雄介
    • Organizer
      土木学会第23回応用力学シンポジウム講演概要集
    • Related Report
      2020 Annual Research Report
  • [Presentation] Evaluation of liquefaction/mudflow resistance of improved volcanic sandy ash soils focusing on dissipated energy2020

    • Author(s)
      Y. KIYOHARA, M. KAZAMA
    • Organizer
      Proceedings of the 17th World Conference on Earthquake Engineering, 17WCEE, Sendai, Japan
    • Related Report
      2020 Annual Research Report
  • [Presentation] 一軸圧縮試験によるしらす土粒子の圧縮強度と体積弾性係数の評価2020

    • Author(s)
      清原雄康,赤坂綾斗
    • Organizer
      第55回地盤工学研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 水分特性曲線を利用した野外盛土の間隙径推測と劣化度評価2019

    • Author(s)
      端本蓮,清原雄康
    • Organizer
      第54回地盤工学研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 被災地で採取した火山灰質土の物理特性及び力学特性の把握2019

    • Author(s)
      緑川雄介,海野寿康,吉直卓也,加村晃良,風間基樹,仙頭紀明
    • Organizer
      第54回地盤工学研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 降雨時・地震時における地盤の挙動と防災2018

    • Author(s)
      清原 雄康
    • Organizer
      1968年十勝沖地震50周年シンポジウム-過去を見つめこれからを考える-
    • Related Report
      2018 Annual Research Report
    • Invited

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Published: 2018-04-23   Modified: 2023-01-30  

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