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Study on a Method to Simulate a Soil-Pile Foundation System

Research Project

Project/Area Number 60850108
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field Building structures/materials
Research InstitutionKobe University

Principal Investigator

MIZUHATA Koji  Faculty of Engineering, Kobe University, Professor, 工学部, 教授 (20031065)

Co-Investigator(Kenkyū-buntansha) MAEDA Yukinori  Faculty of Engineering, Kobe University, Research Associate, 工学部, 助手 (00116253)
KUSAKABE Kaoru  Faculty of Engineering, Kobe University, Associate Professor, 工学部, 助教授 (80027250)
Project Period (FY) 1985 – 1987
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥9,800,000 (Direct Cost: ¥9,800,000)
Fiscal Year 1987: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1986: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1985: ¥7,000,000 (Direct Cost: ¥7,000,000)
KeywordsSoil-Pile Foundation System / Vibration Generator Test / Impulse Test / Softer Zone / Gap around the Pile / Pile Groups / Dynamic Axial Strain / 薄層要素法 / 杭基礎 / 群杭基礎 / 起振機 / 振動実験 / 杭基礎のモデル化 / 杭周地盤の剛性低下 / 杭周地盤の剥離
Research Abstract

A purpose of this project is to propose a reasonable model of the soil-pile foundation system, based on the analytical and experimental studies. As the experimental studies, the vibration tests of full scale steel and concrete piles with a concrete block at their tops due to vertical and horizontal harmonic excitations have been conducted by making use of a vibration generator. Following results are obtained.
1. The larger the eccentric moment of the vibration generator, the lower the resonance frequency of the soil-pile foundation system.
2. The consentraite condition of the pile top, which is free or fixed, effects on the stiffness coefficient and viscous damping coefficient of the soil-pile foundation system.
3. In the vertical excitation, dynamic axial strain of the pile exists even deeper region, but in the horizontal excitation, it vanishes at deeper region. And it seems that gap between the pile and its surrounding soil ground occurs in the vicinity of the ground surface.
4. Fourier spectrum of response of pile foundation due to impulseexcitation is similar to its amplitude characteristics obtained from the vibration generator test. Then impulse test of the soil-pile foundation system is available. From the analytical study on vibration characteristics of the pile-softer zonesoil system, following results are followed.
5. The lower the stiffness of the softer zone, the lower the resonance frequency of the soil-pile interacion system, and the deeper the gap around the pile, the greater the resonance amplitude.
6. The reduction of the stiffness of softer zone and the existance of gap around the pile must be considerd for every kind of piles. As the result of their studies, ti is pointed out that the pile-softer zone-soil system with gap around the pile is the best analytical model.

Report

(3 results)
  • 1988 Final Research Report Summary
  • 1986 Annual Research Report
  • 1985 Annual Research Report
  • Research Products

    (49 results)

All Other

All Publications (49 results)

  • [Publications] 水畑耕治: 日本建築学会大会学術講演梗概集. 389-390 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会大会学術講演梗概集. 391-392 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会大会学術講演梗概集. 393-394 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会大会学術講演梗概集. 395-396 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会大会学術講演梗概集. 第26号. 233-236 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会大会学術講演梗概集. 527-528 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会大会学術講演梗概集. 529-530 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会大会学術講演梗概集. 531-532 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会大会学術講演梗概集. 641-642 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会近畿支部研究報告集. 第27号. 213-216 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会近畿支部研究報告集. 第27号. 217-220 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会近畿支部研究報告集. 第27号. 221-224 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会大会学術講演梗概集. 529-530 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会大会学術講演梗概集. 581-582 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会大会学術講演梗概集. 615-616 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 日下部馨: 日本建築学会大会学術講演梗概集. 727-728 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA Koji.: The Memoirs of the Faculty of Engineering,Kobe University. No.34. 81-98 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会近畿支部研究報告集. 第28号. 457-460 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会近畿支部研究報告集. 第28号. 461-464 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会近畿支部研究報告集. 第28号. 465-468 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 日下部馨: 日本建築学会近畿支部研究報告集. 第28号. 441-444 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Experimental Study on Vibration of Prestressed Concrete Nodular Cylindrical Floating Pile (Part 1 General Description of Experiment and Vibration of Active Pile) (in Japanese)" Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan. 389-390 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Experimental Study on Vibration of Prestressed Concrete Nodular Cylindrical Floating Pile (Part 2 Vibration Characteristics of Surrounding Ground and Dynamic Strain) (in Japanese)" Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan. 391-392 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Vertical Vibration of Floating Pile by Thin Layer Method - Comparison with Experimental Results - (in Japanese)" Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan. 393-394 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Comparison among Vibration Characteristics of Several Kinds of Full Scale Piles (in Japanese)" Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan. 395-396 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Vibratiton Characteristics of Pile-Soil Interaction System with Boundary Zone around the Pile (in Japanese)" Reports of the Architectural Institute of Japan (Kinki sub-Division). No.26. 233-236 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Dynamical Characteristics of Embedded Mass Obtained by Vibration Generator Test (Part 1 Outline of Experiment) (in Japanese)" Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan. 527-528 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Dynamical Characteristics of Embedded Mass Obtained by Vibration Generator Test (Part 2 Amplitude and Phase Characteristics) (in Japanese)" Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan. 529-530 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Dynamical Characteristics of Embedded Mass Obtained by Vibration Generator Test (Part 3 Equivalent Stiffness Coefficient and Viscous Damping Coefficient) (in Japanese)" Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan. 531-532 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Study on Vibration Characteristics of Pile-Boundary-Soil Systems (in Japanese)" Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan. 641-642 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Experimental Study on Vibration Characteristics of the Pile with Embedded Foundation Block on its Head (in Japanese)" Reports of the Architectural Institute of Japan (Kinki sub-Division). No.27. 213-216 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Study on Ground Vibration around Embedded Foundation due to Harmonic Excitation (in Japanese)" Reports of the Architectural Institute of Japan (Kinki sub-Division). No.27. 217-220 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "On Vertical Vibration of Group Piles-Soil Medium System with a Softer Zone around Each Pile (in Japanese)" Reports of the Architectural Institute of Japan (Kinki sub-Division). No.27. 221-224 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Experimental Study on Vibration Characteristics of Bored Precast Steel Pipe Piles (in Japanese)" Summaries of Technical Reports of Annual Meeting, Architectural Institute of Japan. 529-530 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Evaluation of Soil Damping by Vibration Generator Test of Rigit Foundation (in Japanese)" Summaries of Technical Reports of Annual Meeting, Architectural Institute of Japan. 581-582 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "On Virtical Vibration of Group Piles-Soil Medium System witha Softer Zone around Each Pile" Summaries of Technical Reports of Annual Meeting, Architectural Institute of Japan. 615-616 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Constrained Effect of Pile Top on Vibration Characteristics of Pile Foundation - Comparison of Analytical Result with Experimental One - (in Japanese)" Summaries of Technical Reports of Annual Meeting, Architectural Institute of Japan. 727-728 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Experimental Study on Dynamic Characteristics of Full Scale Group PHC Piles with Embedded Block at the Pile Top" The Memoirs of the Faculty of Engineering, Kobe University. No.34. 81-98 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Vibration Characteristics of Driven Steel Pipe Piles due to Harmonic Excitations at the Pile Top in Rokko Island (in Japanese)" Reports of the Architectural Institute of Japan (Kinki sub-Division). No.28. 457-460 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Ground Vibration around Steel Pipe Piles due to Harmonic Excitation at the Pile Top in Rokko Island (in Japanese)" Reports of the Architectural Institute of Japan (Kinki sub-Division). No.28. 461-464 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] MIZUHATA KOJI.: "Ground Vibration around Embedded Foundation due to Harmonic Excitation on Nishinomiya Coast (in Japanese)" Reports of the Architectural Institute of Japan (Kinki sub-Division). No.28. 465-468 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] KUSAKABE Kaoru.: "Vibration Characteristics of a Semi-Infinite Elastic Medium due to Distributed Force over Vertical Plane and Horizontal Plane in the Medium (in Japanese)" Reports of the Architectural Institute of Japan (Kinki sub-Division). No.28. 441-444 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 水畑耕治: 日本建築学会近畿支部研究報告集. 第26号構造系. 233-236 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 水畑耕治: 日本建築学会大会学術講演梗概集. 641-642 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 水畑耕治: 日本建築学会近畿支部研究報告集. 第27号構造系. (1987)

    • Related Report
      1986 Annual Research Report
  • [Publications] 水畑耕治: 日本建築学会近畿支部研究報告集. 第27号構造系. (1987)

    • Related Report
      1986 Annual Research Report
  • [Publications] 水畑耕治: 日本建築学会近畿支部研究報告集. 第27号構造系. (1987)

    • Related Report
      1986 Annual Research Report
  • [Publications] 日本建築学会大会学術講演梗概集. (1985)

    • Related Report
      1985 Annual Research Report
  • [Publications] 日本建築学会近畿支部研究発表会. 第26号構造系. (1986)

    • Related Report
      1985 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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