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The Development of Laminated Rubber Bearings Applicable to the Base Isolation of Light Weight Wooden Houses

Research Project

Project/Area Number 14550583
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Building structures/materials
Research InstitutionMusashi Institute of Technology

Principal Investigator

NISHIMURA Isao  MUSASHI INSTITUTE OF TECHNOLOGY, DEPARTMENT OF ARCHITECTURE FACULTY OF ENGINEERING, Associate Professor, 工学部, 助教授 (60328929)

Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2004: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2003: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2002: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsGeometrical Nonlinearity / Elliptic Function / Haringx Model / Buckling / Base Isolation / Rubber Bearing / 積層ゴム / 曲げ剛性 / 木造住宅 / 座屈荷重 / せん断剛性 / せん断剛
Research Abstract

The goal of this research project was to improve the stability of laminated rubber bearings to the extent that they could support such lightweight structures as wooden houses that are base isolated from the ground motion in case of a large earthquake.
In the early phase of this research project, emphasis was placed on the analytical study to clarify the shear, bending, and axial stiffness associated with hollow circular rubber bearings that were used for this purpose. The aim of the experimental studies was to validate the analytical prediction and evaluate the precision of the obtained formulas.
The coherence between the analytical and experimental studies for the hollow circular rubber bearings was the basis on which the buckling tests in the next phase were conducted and their post-analytical studies were also carried out. As a result of those sequential tests and analyses, the author successfully constituted a geometrically nonlinear model that could well describe the post buckling behavior of test specimens.
The author proved that the deferential equation of the buckling model was identical to the nonlinear vibration model for a pendulum with large amplitude. Therefore, the solution for the model is expressed in terms of Jacobi's elliptic integrals.
This model revealed that there is a required condition that certifies the post-buckling stability of the shear-bending columns in general. This theoretical finding leads to the invention that has a superb post-buckling stability that will satisfy the goal of this research project.

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (16 results)

All 2005 2004 2003 2002 Other

All Journal Article (10 results) Patent(Industrial Property Rights) (2 results) Publications (4 results)

  • [Journal Article] 幾何学的非線形を考慮した曲げ-せん断部材の座屈後挙動-免震構造用積層ゴム支承の座屈安定性問題への適用-2005

    • Author(s)
      西村 功
    • Journal Title

      日本建築学会構造系論文集 第593号

    • NAID

      110004839744

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Geometrical Nonlinearity on the Buckling Behavior of Laminated Rubber Bearings2005

    • Author(s)
      Isao Nishimura
    • Journal Title

      Journal of AIJ, Structure Div. Vol.593

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Experimental Study on the Buckling Behavior of Hollow Circular Rubber Bearings2005

    • Author(s)
      Isao Nishimura, Akiko Agi, Yukinari Imaizumi
    • Journal Title

      Journal of AIJ, Structure Div. Vol.586

      Pages: 79-86

    • NAID

      10022052345

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 幾何学的非線形を考慮した曲げ-せん断部材の座屈後挙動-免震構造用積層ゴム支承の座屈安定性問題への適用-2005

    • Author(s)
      西村 功
    • Journal Title

      日本建築学会構造系論文集 第593号(印刷中)

    • NAID

      110004839744

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 中空断面を有する積層ゴム支承の座屈荷重に関する実験(その1)ゴム材料のせん断弾性係数の評価2004

    • Author(s)
      西村功, 小木亜希子, 今泉幸成
    • Journal Title

      日本建築学会大会梗概集

      Pages: 475-476

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 中空断面を有する積層ゴム支承の座屈荷重に関する実験(その2)鉛直荷重と水平剛性の関係2004

    • Author(s)
      西村功, 小木亜希子, 今泉幸成
    • Journal Title

      日本建築学会大会梗概集

      Pages: 477-478

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 中空断面を有する積層ゴム支承の座屈荷重に関する実験的研究2004

    • Author(s)
      西村功, 小木亜希子, 今泉幸成
    • Journal Title

      日本建築学会構造系論文集 第586号

      Pages: 79-86

    • NAID

      10022052345

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] 中空断面を有する積層ゴム支承のせん断剛性に関する実験的研究2003

    • Author(s)
      西村 功, 小木 亜希子
    • Journal Title

      日本地震工学会2003年大会梗概集

      Pages: 216-217

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 中空断面を有する積層ゴム支承の曲げ剛性に関する解析的研究2002

    • Author(s)
      西村 功
    • Journal Title

      日本建築学会構造系論文集 第558号

      Pages: 149-156

    • NAID

      110004082012

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Analytical Study on the Bending Stiffness of Hollow Circular Rubber Bearings2002

    • Author(s)
      Isao Nishimura
    • Journal Title

      Journal of AIJ, Structure Div. Vol.558

      Pages: 149-156

    • NAID

      110004082012

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Patent(Industrial Property Rights)] 座屈安定性に優れた積層ゴム支承2005

    • Inventor(s)
      西村功
    • Industrial Property Rights Holder
      西村功
    • Industrial Property Number
      2005-061960
    • Filing Date
      2005-03-07
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Patent(Industrial Property Rights)] 座屈安定性に優れた積層ゴム支承2005

    • Inventor(s)
      西村 功
    • Industrial Property Rights Holder
      武蔵工業大学
    • Industrial Property Number
      2005-061960
    • Filing Date
      2005-03-07
    • Related Report
      2004 Annual Research Report
  • [Publications] 西村 功: "中空断面を有する積層ゴム支承の曲げ剛性に関する解析的研究"日本建築学会構造系論文集. 第558号. 149-156 (2002)

    • Related Report
      2003 Annual Research Report
  • [Publications] 西村 功, 小木 亜希子: "中空断面を有する積層ゴム支承のせん断剛性に関する実験的研究"日本地震工学会大会2003年梗概集. 216-217 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 西村 功, 小木亜希子, 小泉幸成: "中空断面を有する積層ゴム支承に関する研究"第6回日中建築構造技術交流会論文集. (5月発表予定). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 西村 功: "中空断面を有する積層ゴム支承の曲げ剛性に関する解析的研究"日本建築学会構造系論文集. 第558号. 149-156 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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