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1996 Fiscal Year Final Research Report Summary

Development of multi-function torsional shear apparatus and evaluation of cyclic deformation-strength characteristics of sand under various stress conditions

Research Project

Project/Area Number 06555135
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section試験
Research Field Geotechnical engineering
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

TOKI Shosuke  Hokkaido Univ., Fac.of Eng., Prof., 工学部, 教授 (50001136)

Co-Investigator(Kenkyū-buntansha) TATEISHI Akira  Taisei Corp., Civil Eng.Div., Senior Engineer, 設計部, 課長
YAMASHITA Satoshi  Kitami Inst.of Tech., Fac.of Eng., Asso.Prof., 工学部, 助教授 (00174673)
MIURA Kinya  Hokkaido Univ., Fac.of Eng., Asso.Prof., 工学部, 助教授 (40190582)
MIURA Seiichi  Muroran Inst.of Tech., Fac.of Eng., Asso.Prof., 工学部, 助教授 (00091504)
Project Period (FY) 1994 – 1996
KeywordsTorsional shear test / Liquefaction / Flow failure / Ocean wave loading / Earthquake / Sandy soil / Volcanic soil / Small strain
Research Abstract

In this study, low cost, high resolution and high performance direct drive motor (DDM) used as axial and torsional loading equipment of torsional shear apparatus. In this DDM,changes of position, torque, speed control mode can be done easily by signals from a computer through the RS232C during testing.
To examine the effects of loading controlled conditions on the cyclic deformation characteristics of sand under wide range of strain level, axial load (torque) and axial displacement (rotation angle) controlled cyclic triaxial (torsional) shear tests were performed by the above DDM loading system. And also, displacement and load controlled undrained cyclic triaxial and torsional tests to obtain the liquefaction strength were performed.
Test result showed that :
1) Axial load (torque) and axial displacement (rotation angle) controlled tests under wide range of strain levels can be performed by the developed loading equipment usign DDM.
2) In the load controlled undrained cyclic test, the shear modulus and the damping ratio are not continuously measured at strain revel upper about 0.1%. The reason for this is that the strain kincreases rapidly due to the decrease of effective confining pressure. On the other hand, in the displacement controlled undrained cyclic test. cyclic deformation properties are continuously measured at large strain level.
3) There existed a unique rule between results of load and displacement controlld liquefaction tests. This rule was independent of the relative density, the loading cycles and the types of tests (triaxial and torsional). On the basis of this relation, the cyclic strength in load controlled tests can be evaluated to some extent by performing displacement controlled cyclic tests.

  • Research Products

    (32 results)

All Other

All Publications (32 results)

  • [Publications] 三浦均也: "重複反射法による層状海底地盤の挙動解析" 土質工学シンポジウム発表論文集. 39. 49-56 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 三浦均也: "動的有限要素法による防波堤の挙動解析" 土質工学シンポジウム発表論文集. 39. 227-234 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 土岐祥介: "波による繰返し引抜き力を受ける水中トンネル海底基礎杭の挙動" 土質工学シンポジウム発表論文集. 39. 57-64 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山下聡: "異なる直接型せん断試験装置による砂と粘土の変形強度特性" 直接型せん断試験の方法と適用に関するシンポジウム発表論文集. 1. 167-172 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 三浦清一: "消波構造物を支持する地盤の波浪による流動化機構の研究" 海岸工学論文集. 42・2. 1016-1020 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S. Yamashita: "Cyclic deformation properties of a man-made loose sand deposit" Proc. of the First International Conference on Earthquake Geotechnical Engineering. 1. 71-76 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A. Tateishi: "A cyclic elasto-plastic model for sand and its application under various stress conditions" Proc. of the First International Conference on Earthquake Geotechnical Engineering. 1. 399-404 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 三浦清一: "北海道火山性粗粒土の静的および動的力学挙動と粒子破砕" 土木学会論文集. 547・36. 159-170 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 三浦清一: "破砕性粗粒火山灰土の繰返し非排水変形-強度特性に及ぼす応力履歴の影響" 土木学会論文集. 547・36. 221-229 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山下聡: "多機能能中空ねじり試験装置の開発とひずみ制御液状化試験の適用性" 地盤工学会北海道支部技術報告集. 36. 203-210 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 三浦清一: "波浪力を受ける消波構造物・地盤系の流動破壊とその評価" 海岸工学論文集. 43・2. 1016-1020 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 澁谷啓: "乱れたサンプリング試料を用いた埋立て砂地盤の繰返し変形特性の評価" 土と基礎. 44・8. 16-18 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S. Miura: "A procedure minimizing membrane penetration effects in undrained triaxial test" Soils and Foundations. 36・4. 119-126 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S. Yamashita: "Effect of membrane penetration on modulus and Poisson's ratio under undrained cyclic triaxial condition" Soils and Foundations. 36・4. 127-133 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 三浦清一: "火山灰質粒状体の圧密・せん断による粒子破砕とその評価" 土木学会論文集. 561・38. 177-189 (1997)

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      「研究成果報告書概要(和文)」より
  • [Publications] S. Yamashita: "A case study for characterizing undrained cyclic deformation propertie in young sand deposit from in-situ and laboratory tests" Soils and Foundations. 37・2(印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Miura, K., Ota, T.and Yoshida, N.: "Analysis of the stratified seafloor subjected to waves by multipul reflection method" Proc.of the Symposium on Soil Eng.No.39. 49-56 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Miura, K., Yoshida, N.Hayashi, M.and Ashok, P.: "Finite element analysis of break water" Proc.of the Symposium on Soil Eng.No.39. 227-234 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Toki, S., Nishikawa, J., Toriihara, M.and Ito.M.: "Behavior of an ocean-floor foundation pile which receives a cyclic pull-out force to waves" Proc.of the Symposium on Soil Eng.No.39. 57-64 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yamashita, S., Shibuya, S., Takahashi, T., Hirata, H., Takada, M.and Chiba, T.: "Deformation-strength character istics of sand and clay obtained from diferent direct shear test apparatuses" Proc.of the Symposium on Direct Shear Test Method and Its Application.167-172 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Miura, S., Tanaka, N., Kondo, S., Kawamura, S.and Sato, K.: "Wave-induced flow failure of seabed bearing wave dissipating structures" Proc.of Coastal Engineering. Vol.42, No.2. 1016-1020 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yamashita, S., Shibuya, S., Toki, S.and Inahara, H.: "Cyclic deformation properties of a man-made loose sand deposit" Proc.of 1st Inter.Conf.on Earthquake Geotechnical Eng. Vol.1. 71-76 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tateishi, A., Taguchi, Y., Oka, F.and Yashima, A.: "A cyclic elasto-plastic model for sand and its application under various stress conditions" Proc.of 1st Inter.Conf.on Earthquake Geotechnical Eng.Vol.1. 399-404 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Miura, S., Yagi, K.and Kawamura, S.: "Static and cyclic shear behavior and particle crushing of volcanic coarse grained soils in Hokkaido" Journal of Geotechnical Eng.No.547/III-36. 159-170 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Miura, S., Yagi, K.and Kawamura, S.: "Effect of stress history on cyclic undrained deformation-strength characteristics of volcanic coarse-grained soils" Journal of Geotechnical Eng.No.547/III-36. 221-229 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yamashita, S.and Suzuki, T.: "Development of multi-function torsional apparatus and application by strain controlled liquefaction test" Proc.of Hokkaido Branch of the Japanese Geotechnical Society. No.36. 203-210 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Miura, S., Kawamura, S.and Tanaka, N.: "Wave-induced flow failure of seabed bearing dissipating structures and its evaluation" Proc.of Coastal Engineering. Vol.43, No.2. 1016-1020 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shibuys, S., Yamashita, S., Tanaka, H.and Nakajima, M.: "Characterizing cyclic deformation properties of sand deposit using disturbed samples" Tsuchi-to-Kiso. Vol.44, No.8. 16-18 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Miura, S., and Kawamura, K.: "A procedure minimizing membrane penetration effects in undrained triaxial test" Soils and Foundations. Vol.36, No.4. 119-126 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yamashita, S., Toki, S.and Suzuki, S.: "Effect of membrane penetration on modulus and Poisson's ratio under undrained cyclic triaxial condition" Soils and Foundations. Vol.35, No.4. 127-133 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Miura, S., and Yagi, K.: "Particle breakage of volcanic coarse-grained soils and its evaluation" Journal of Geotechnical Eng.No.561/III-38. 177-189 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yamashita, S., Shibuya, S.and Tanaka, H.: "A case study for characterizing undrained cyclic deformation properties in young sand deposit from in-situ and laboratory tests" Soils and Foundations. Vol.36, No.2. (1997)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-09  

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