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Development of 4G soil testing system with NI-NC measurement

Research Project

Project/Area Number 19H02230
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 InstitutionHokkaido University

Principal Investigator

Nishimura Satoshi  北海道大学, 工学研究院, 教授 (70470127)

Co-Investigator(Kenkyū-buntansha) 桑野 玲子  東京大学, 生産技術研究所, 教授 (80312974)
大坪 正英  東京大学, 生産技術研究所, 助教 (80804103)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2020: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywords地盤工学 / 室内土質試験 / 地盤材料 / 力学特性
Outline of Research at the Start

高度な土のモデル化や地盤変形予測解析の要求に応え地盤構造物の性能設計に資するためには、地盤材料変形特性を計測する手段の更なる高精度化・効率化が望まれる。本研究は、土要素レベルでのgeophysics・光学計測などの非貫入(Non-Intrusive)・非接触(Non-Contact)型計測や、異方弾性計測を可能とする新載荷手法など個々の土質試験技術モジュールを発展・統合することにより、高精度な多価情報が得られ、かつ多様な地盤材料・状態に対し汎用的に適用しうる新世代(第4世代)地盤変形試験システムの枠組みを構築し、その妥当性を連続体・粒状体的視点から力学的な裏付ける。

Outline of Final Research Achievements

This study developed a suite of new generation techniques involving non-intrusive, non-contacting sensors for measuring various levels of geomaterial deformation in laboratory testing. Among the proposed techniques are disc-shaped piezoelectric sensors for multi-directional shear wave velocity measurements, which can be installed to soil specimens without intrusion, and a new image analysis technique based on high-accuracy stereophotogrammetry and digital image correlation. By combining these, the deformation properties of geomaterials can be characterised from strain of 0.001% to virtually any large strain. To demonstrate the applicability and benefit of the new innovation, a wide range of geomaterials were tested with the proposed techniques in this study.

Academic Significance and Societal Importance of the Research Achievements

従来の土質変形試験は、動的応答解析に用いる微小ひずみ剛性、掘削等に伴う地盤変形予測に用いる中ひずみ域変形特性、そして崩壊予測や地盤沈下解析に用いる大ひずみ域変形特性の把握と目的をわけて実施されることが多いが、本研究での開発はこれらを一つのパッケージとして同一装置に統合できるものである。また、個々の技術モジュールに使われているハードウェアは極めて廉価である。これらは現行の土質試験の精度・利便性の向上に大きく寄与するとともに、低コストで導入できことから、特に発展途上国の土質試験室において技術の飛躍をもたらす潜在性をもった成果である。

Report

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

    (29 results)

All 2023 2022 2021 2020 2019

All Journal Article (15 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 13 results,  Open Access: 8 results) Presentation (14 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results)

  • [Journal Article] Characterisation of soil deformation over wide strain ranges in triaxial test with high-precision stereophotogrammetry2022

    • Author(s)
      Nishimura, S.
    • Journal Title

      Geotechnique

      Volume: - Issue: 12 Pages: 1071-1086

    • DOI

      10.1680/jgeot.21.00067

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anisotropy in small-strain shear modulus of granular materials: Effects of particle properties and experimental conditions2022

    • Author(s)
      Liu J.、Otsubo M.、Kawaguchi Y.、Kuwano R.
    • Journal Title

      Soils and Foundations

      Volume: 62 Issue: 1 Pages: 101105-101105

    • DOI

      10.1016/j.sandf.2021.101105

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interpretation of static and dynamic Young’s moduli and Poisson’s ratio of granular assemblies under shearing2022

    • Author(s)
      Li Yang、Otsubo Masahide、Kuwano Reiko
    • Journal Title

      Computers and Geotechnics

      Volume: 142 Pages: 104560-104560

    • DOI

      10.1016/j.compgeo.2021.104560

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Transition of gap-graded soil fabric ? shear wave measurements and dispersion relation2022

    • Author(s)
      Li Yang、Otsubo Masahide、Ghaemi Arian、Dutta Troyee Tanu、Kuwano Reiko
    • Journal Title

      Soils and Foundations

      Volume: 62 Issue: 1 Pages: 101092-101092

    • DOI

      10.1016/j.sandf.2021.101092

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of shearing history on stress wave velocities of sands observed in triaxial compression tests2021

    • Author(s)
      Dutta T.T.、Otsubo M.、Kuwano R.
    • Journal Title

      Soils and Foundations

      Volume: 61 Issue: 2 Pages: 541-548

    • DOI

      10.1016/j.sandf.2021.02.002

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Stress wave transmission and frequency-domain responses of gap-graded cohesionless soils2021

    • Author(s)
      Dutta T.T.、Otsubo M.、Kuwano R.
    • Journal Title

      Soils and Foundations

      Volume: 61 Issue: 3 Pages: 857-873

    • DOI

      10.1016/j.sandf.2021.03.003

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] DEM analysis on the stress wave response of spherical particle assemblies under triaxial compression2021

    • Author(s)
      Li Yang、Otsubo Masahide、Kuwano Reiko
    • Journal Title

      Computers and Geotechnics

      Volume: 133 Pages: 104043-104043

    • DOI

      10.1016/j.compgeo.2021.104043

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 論説:室内土質試験の新たなオプション2021

    • Author(s)
      西村 聡
    • Journal Title

      地盤工学会誌

      Volume: 69 Pages: 8-12

    • Related Report
      2020 Annual Research Report
  • [Journal Article] 総説:土質試験の発展の経緯と今後の展開2021

    • Author(s)
      桑野 玲子
    • Journal Title

      地盤工学会誌

      Volume: 69 Pages: 3-7

    • Related Report
      2020 Annual Research Report
  • [Journal Article] An experimental study on the influence of particle shape on the mechanical behaviour of granular materials2020

    • Author(s)
      Y. Li, M. Otsubo, R. Kuwano
    • Journal Title

      SEISAN KENKYU

      Volume: 72 Issue: 6 Pages: 391-395

    • DOI

      10.11188/seisankenkyu.72.391

    • NAID

      130007957052

    • ISSN
      0037-105X, 1881-2058
    • Year and Date
      2020-11-01
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Laboratory element tests on dynamic responses of gap-graded silica sand2020

    • Author(s)
      大坪 正英, デュッタ トロイー タヌ, ガエム アリアン, リ ヤン, 桑野 玲子
    • Journal Title

      SEISAN KENKYU

      Volume: 72 Issue: 6 Pages: 387-390

    • DOI

      10.11188/seisankenkyu.72.387

    • NAID

      130007957049

    • ISSN
      0037-105X, 1881-2058
    • Year and Date
      2020-11-01
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] An alternative method in triaxial tests to obtain cross-anisotropic elastic parameters2020

    • Author(s)
      Nishimura, S. and Magalona, F.
    • Journal Title

      Geotechnique Letters

      Volume: 10 Issue: 3 Pages: 468-477

    • DOI

      10.1680/jgele.20.00031

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evolution of shear wave velocity during triaxial compression2020

    • Author(s)
      Dutta T.T.、Otsubo M.、Kuwano R.、O'Sullivan C.
    • Journal Title

      Soils and Foundations

      Volume: 60 Issue: 6 Pages: 1357-1370

    • DOI

      10.1016/j.sandf.2020.07.008

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Estimating multidirectional stiffness of soils using planar piezoelectric transducers in a large triaxial apparatus2020

    • Author(s)
      Dutta T.T.、Otsubo M.、Kuwano R.、Sato T.
    • Journal Title

      Soils and Foundations

      Volume: 60 Issue: 5 Pages: 1269-1286

    • DOI

      10.1016/j.sandf.2020.08.002

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Stress wave velocity in soils: Apparent grain-size effect and optimum input frequencies2019

    • Author(s)
      Troyee Tanu Dutta, Masahide Otsubo, Reiko Kuwano, Catherine O'Sullivan
    • Journal Title

      Geotechnique Letters

      Volume: 9(4) Issue: 4 Pages: 340-347

    • DOI

      10.1680/jgele.18.00219

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Stiffness measurements in laboratory tests: New insights and innovations(仮題)2023

    • Author(s)
      Nishimura, S.
    • Organizer
      9th International SUT OSIG Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 室内土質試験における微小~大変形計測へのステレオフォトグラメトリーの適用性2021

    • Author(s)
      西村 聡
    • Organizer
      第56回地盤工学研究発表会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] ステレオフォトグラメトリーを用いた三軸試験による微小変形計測:原理と精度評価2021

    • Author(s)
      西村 聡
    • Organizer
      第61回地盤工学会北海道支部技術報告会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] 粒状体の剛性計測に現れる異方性・境界条件の影響2021

    • Author(s)
      Liu,Junming・大坪正英・桑野玲子
    • Organizer
      第56回地盤工学研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Stress Wave Response of Spherical Granular Assemblies During Triaxial Compression: A DEM Case Study2021

    • Author(s)
      Li, Y., Otsubo, M. and Kuwano,R.
    • Organizer
      土木学会第76回年次学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] The Influence of Particle Orientation on the Anisotropy of Shear Wave Velocity Observed in Elongated Particles2021

    • Author(s)
      Liu J., Otsubo M. & Kuwano R.
    • Organizer
      土木学会第76回年次学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Effects of particle shape and roughness on mechanical responses of granular materials in triaxial tests2020

    • Author(s)
      Yang Li, Masahide Otsubo, Reiko Kuwano
    • Organizer
      土木学会第75回年次学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ギャップグレード硅砂の弾性波応答特性に関する実験的研究2020

    • Author(s)
      大坪 正英, Arian Ghaemi, 桑野 玲子
    • Organizer
      第55回地盤工学研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] せん断波速度に現れる粒状体の異方性と粒子形状の関係2020

    • Author(s)
      Junming Liu, 川口 勇一郎, 大坪 正英, 桑野 玲子
    • Organizer
      第55回地盤工学研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Simplified Evaluation of Deformation via image analysis in uniaxial compression test2020

    • Author(s)
      John Varie Orozco and Satoshi Nishimura
    • Organizer
      第55回地盤工学研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Determining cross-anisotropic stiffness parameters of clay soil using pore water pressure behavior2019

    • Author(s)
      Fernnie Magalona and Satoshi Nishimura
    • Organizer
      第54回地盤工学研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Small-strain characterisation; New tools and multi-dimensional perspective2019

    • Author(s)
      Satoshi Nishimura, Reiko Kuwano and Masahide Otsubo
    • Organizer
      7th International Symposium on Deformation Characteristics of Geomaterials
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of vertical and horizontal disk transducers for wave velocity measurements in a large rectangular specimen2019

    • Author(s)
      Troyee Tanu Dutta, Masahide Otsubo, Reiko Kuwano and Takeshi Sato
    • Organizer
      7th International Symposium on Deformation Characteristics of Geomaterials
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Assessment of elastic wave velocities through granular soils during monotonic loading2019

    • Author(s)
      Troyee Tanu Dutta and Masahide Otsubo
    • Organizer
      The 16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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