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Evaluation of necessary capacity and development of dynamic design method for unseting prevention cables of bridges with shock absorbing devices

Research Project

Project/Area Number 17360219
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Structural engineering/Earthquake engineering/Maintenance management engineering
Research InstitutionRitsumeikan University

Principal Investigator

IZUNO Kazuyuki  Ritsumeikan University, Faculty of Science and Engineering, Professor (90168328)

Co-Investigator(Kenkyū-buntansha) NOZAKA Katsuyoshi  Ritsumeikan University, Faculty of Science and Engineering, Lecturer (50373105)
KITAHARA Takeshi  Kanto Gakuin University, Faculty of Engineering, Associate Professor (00331992)
KAJITA Yukihide  Kyushu University, Faculty of Engineering, Associate Professor (10403940)
Project Period (FY) 2005 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥9,180,000 (Direct Cost: ¥8,400,000、Indirect Cost: ¥780,000)
Fiscal Year 2007: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2006: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2005: ¥3,300,000 (Direct Cost: ¥3,300,000)
Keywordsbridge engineering / unseating prevention / seismic design / continuous girder bridge / relative response velocity / fail safe / rubber / shock absorber / 連続橋
Research Abstract

A rational design method of an unseating prevention cable is not established yet especially for that with a shock absorber. This research aims to clarify a dynamic property of an unseating prevention cable with a shock absorber considering its deformation limit and nonlinearity. The results show that the shock absorber can be designed according to the law of conservation of energy.
Then, the design method for the unseating prevention cable was studied for the continuous girder bridges. Once a continuous girder bridge becomes unseated at one pier, the girder is likely to collapse due to bending or shear forces. In this study, the necessary capacity of an unseating prevention cable to prevent the girder of a continuous girder bridge from collapsing was investigated using static and dynamic analysis. The static analysis verified that an unseating prevention cable designed using the present design procedure had sufficient capacity to resist the excessive bending moment and shear force caused by falling of the girder. The dynamic analysis showed that a part of the girder yields due to the large bending moment if a low stiffness cable is used as the unseating prevention cable.
Further, the relative velocity during collision between the adjacent bridges was estimated in order to estimate the collision force. The elasto-plastic response analyses were carried out using 2-degree-of freedom model. The parametric study was conducted on the influence of the relative velocity of type of input motion, ground classifications, damping ratio and collision spring. As compared to elastic responses, the relative velocity was reduced in about half and it ranged from 0.3 to 2.5m/sec. Finally, it is clarified that the ground classifications, differential ratio of natural period and collision spring strongly affect on the relative velocity during pounding girders.

Report

(4 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (51 results)

All 2007 2006 2005

All Journal Article (37 results) (of which Peer Reviewed: 5 results) Presentation (14 results)

  • [Journal Article] 落橋防止ケーブルの設計作動速度に関する基礎的研究2007

    • Author(s)
      野瀬 大資
    • Journal Title

      第10回地震時保有耐力法に基づく橋梁等構造物の耐震設計に関するシンポジウム講演論文集

      Pages: 275-278

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 連続桁における落橋防止ケーブルの効果に関する研究2007

    • Author(s)
      中尾 尚史
    • Journal Title

      第10回地震時保有耐力法に基づく橋梁等構造物の耐震設計に関するシンポジウム講演論文集

      Pages: 279-284

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 連続桁における落橋防止ケーブルの所要条件に関する基礎的研究2007

    • Author(s)
      中尾 尚史
    • Journal Title

      土木学会論文集 63-1

      Pages: 194-205

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] 変断面連続桁における落橋防止ケーブルの設計に関する研究2007

    • Author(s)
      中尾 尚史
    • Journal Title

      土木学会地震工学論文集 29

      Pages: 539-547

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] 橋脚2次剛性と衝突ばね剛性が桁間衝突速度に与える影響について2007

    • Author(s)
      北原 武嗣
    • Journal Title

      構造物の安全性および信頼性(JCOSSAR2007)論文集 6

      Pages: 779-782

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Journal Article] ゴム製緩衝材の圧縮剛性と最大衝撃力の推定に関する検討2007

    • Author(s)
      北原 武嗣
    • Journal Title

      土木学会地震工学論文集 29

      Pages: 1168-1171

    • NAID

      130004294822

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 桁間衝突実験による緩衝材ゴムの形状率と圧縮剛性に関する検討2007

    • Author(s)
      北原 武嗣
    • Journal Title

      地震時保有耐力法に基づく橋梁等構造の耐震設計に関するシンポジウム講演論文集 11

      Pages: 109-112

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Journal Article] Design velocity of unseating prevention cables2007

    • Author(s)
      Daisuke Nose
    • Journal Title

      Proc. of 10th Symposium on Ductility Design of Bridges, JSCE

      Pages: 275-278

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Effect of unseating prevention cable for continuous girder bridge2007

    • Author(s)
      Hisashi Nakao
    • Journal Title

      Proc. of 10th Symposium on Ductility Design of Bridges, JSCE

      Pages: 279-284

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Study on the necessary capacity of unseating prevention cables for continuous girder bridges2007

    • Author(s)
      Hisashi Nakao
    • Journal Title

      Proc. of Japan Society of Civil Engineers Vol.63, No.1

      Pages: 194-205

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Study on design of unseating prevention cables for variable cross section girder bridges2007

    • Author(s)
      Hisashi Nakao
    • Journal Title

      Proc. of Earthquake Engineering, JSCE Vol.29

      Pages: 539-547

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Influence of pier's stiffness and collision spring stiffness on collision velocity2007

    • Author(s)
      Takeshi Kitahara
    • Journal Title

      Proc. of JCOSSAR 2007 Vol.6

      Pages: 779-782

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Estimate equation of maximum impact force of shock absorbing rubber using shape factor2007

    • Author(s)
      Takeshi Kitahara
    • Journal Title

      Proc. of Earthquake Engineering, JSCE Vol.29

      Pages: 1168-1171

    • NAID

      130004294822

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Experimental study on shape factor and stiffness in compression for shock absorbing rubber2007

    • Author(s)
      Takeshi Kitahara
    • Journal Title

      Proc. of 11th Symposium on Ductility .Design of Bridges, JSCE

      Pages: 109-112

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] ゴム製緩衝材の圧縮剛性と最大衝撃力の推定に関する検討2007

    • Author(s)
      北原 武嗣
    • Journal Title

      土木学会地震工学論文集 9

      Pages: 1168-1171

    • NAID

      130004294822

    • Related Report
      2007 Annual Research Report
  • [Journal Article] 落橋防止ケーブルの設計作動速度に関する基礎的研究2007

    • Author(s)
      野瀬大資
    • Journal Title

      第10回地震時保有耐力法に基づく橋梁等構造物の耐震設計に関するシンポジウム講演論文集

      Pages: 4-4

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 連続桁における落橋防止ケーブルの所要条件に関する基礎的研究2007

    • Author(s)
      中尾尚史
    • Journal Title

      土木学会論文集 63・1

      Pages: 12-12

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 多径間連続桁における落橋防止ケーブルの設計に関する基礎的研究2006

    • Author(s)
      中尾 尚史
    • Journal Title

      第9回地震時保有耐力法に基づく橋梁等構造の耐震設計に関するシンポジウム講演論文集

      Pages: 123-128

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 弾塑性応答を考慮した桁間衝突速度に関する研究2006

    • Author(s)
      北原 武嗣
    • Journal Title

      第12回日本地震工学シンポジウム論文集

      Pages: 926-929

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Design method for unseating prevention cable of continuous girder bridge2006

    • Author(s)
      Hisashi Nakao
    • Journal Title

      Proc. of 9th Symposium on Ductility Design of Bridges, JSCE

      Pages: 123-128

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Collision velocity between adjacent girders considering inelastic earthquake response2006

    • Author(s)
      Takeshi Kitahara
    • Journal Title

      Proc. of 12th Japan Earthquake Engineering Symposium

      Pages: 926-929

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 落橋防止ケーブルの設計作動速度に関する基礎的研究2006

    • Author(s)
      野瀬大資
    • Journal Title

      土木学会第61回年次学術講演会 I

      Pages: 2-2

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 多径間連続橋における落橋防止ケーブルの必要剛性に関する研究2006

    • Author(s)
      中尾尚史
    • Journal Title

      土木学会第61回年次学術講演会 I

      Pages: 2-2

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 弾塑性応答を考慮した桁間衝突速度に関する研究2006

    • Author(s)
      北原武嗣
    • Journal Title

      第12回日本地震工学シンポジウム論文集

      Pages: 4-4

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 連続桁における落橋防止ケーブルの効果に関する研究2006

    • Author(s)
      中尾尚史
    • Journal Title

      第10回地震時保有耐力法に基づく橋梁等構造物の耐震設計に関するシンポジウム講演論文集

      Pages: 6-6

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 多径間連続桁における落橋防止ケーブルの設計に関する基礎的研究2006

    • Author(s)
      中尾尚史
    • Journal Title

      第9回地震時保有耐力法に基づく橋梁等構造の耐震設計に関するシンポジウム講演論文集

      Pages: 6-6

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 緩衝型落橋防止システムの設計と取り付けに関する検討2005

    • Author(s)
      中尾 尚史
    • Journal Title

      土木学会地震工学論文集 28(CD-ROM)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] 鋼材質量を考慮したゴム製緩衝材の衝撃力低減効果に関する桁間衝突実験2005

    • Author(s)
      北原 武嗣
    • Journal Title

      土木学会地震工学論文集 28(CD-ROM)

    • NAID

      130003993189

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Collision Test between Steel Bars with Shock Absorbing Rubber for Bridge Restrainer System using Frictionless Impact Testing Apparatus2005

    • Author(s)
      北原 武嗣
    • Journal Title

      Proc.of the First International Conference on Advances in Experimental Structural Engineering

      Pages: 901-907

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Design and installation method of unseating prevention cable with shock absorber2005

    • Author(s)
      Hisashi Nakao
    • Journal Title

      Proc. of Earthquake Engineering, JSCE Vol.28(CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Influence of mass of girders on reduction of impact force during collision between steel girders with shock absorbing rubber2005

    • Author(s)
      Takeshi Kitahara
    • Journal Title

      Proc. of Earthquake Engineering, JSCE Vol.28(CD-ROM)

    • NAID

      130003993189

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Collision test between steel bars with shock absorbing rubber for bridge restrainer system using frictionless impact testing apparatus2005

    • Author(s)
      Takeshi Kitahara
    • Journal Title

      Proc. of the First International Conference on Advances in Experimental Structural Engineering

      Pages: 901-907

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 緩衝型落橋防止システムの設計と取り付けに関する検討2005

    • Author(s)
      中尾尚史
    • Journal Title

      土木学会地震工学論文集 28

      Pages: 7-7

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 鋼材質量を考慮したゴム製緩衝材の衝撃力低減効果に関する桁間衝突実験2005

    • Author(s)
      北原武嗣
    • Journal Title

      土木学会地震工学論文集 28

      Pages: 6-6

    • NAID

      130003993189

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 落橋防止ケーブルの設置に関する一考察2005

    • Author(s)
      中尾尚史
    • Journal Title

      土木学会第60回年次学術講演会 I

      Pages: 2-2

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 桁間衝突用緩衝材としての積層繊維補強ゴムの衝撃緩衝効果に関する実験的研究2005

    • Author(s)
      西本安志
    • Journal Title

      土木学会第60回年次学術講演会 I

      Pages: 2-2

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Collision Test between Steel Bars with Shock Absorbing Rubber for Bridge Restrainer System using Frictionless Impact Testing Apparatus2005

    • Author(s)
      北原武嗣
    • Journal Title

      Proceedings of the First International Conference on Advances in Experimental Structural Engineering

      Pages: 7-7

    • Related Report
      2005 Annual Research Report
  • [Presentation] 変断面連続桁における落橋防止ケーブルの設計法に関する一検討2007

    • Author(s)
      中尾 尚史
    • Organizer
      土木学会第62回年次学術講演会
    • Place of Presentation
      広島県・広島大学
    • Year and Date
      2007-09-12
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Design method of unseating prevention cables for variable cross section girder bridges2007

    • Author(s)
      Hisashi Nakao
    • Organizer
      62nd Annual Meeting of JSCE
    • Place of Presentation
      Hiroshima
    • Year and Date
      2007-09-12
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 変断面連続桁における落橋防止ケーブルの設計法に関する-検討2007

    • Author(s)
      中尾 尚史
    • Organizer
      土木学会第62回年次学術講演会
    • Place of Presentation
      広島大学
    • Year and Date
      2007-09-12
    • Related Report
      2007 Annual Research Report
  • [Presentation] 落橋防止ケーブルが桁に与える影響に関する実験的研究2007

    • Author(s)
      藤原 啓隆
    • Organizer
      平成19年度土木学会関西支部年次学術講演会
    • Place of Presentation
      大阪府・大阪大学
    • Year and Date
      2007-05-26
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Experiments on effect of unseating prevention cable for bridge girder2007

    • Author(s)
      Hirotaka Fujiwara
    • Organizer
      Kansai Branch Annual Meeting of JSCE
    • Place of Presentation
      Osaka
    • Year and Date
      2007-05-26
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 落橋防止ケーブルが桁に与える影響に関する実験的研究2007

    • Author(s)
      藤原 啓隆
    • Organizer
      平成19年度土木学会関西支部年次学術講演会
    • Place of Presentation
      大阪大学
    • Year and Date
      2007-05-26
    • Related Report
      2007 Annual Research Report
  • [Presentation] 落橋防止ケーブルの設計作動速度に関する基礎的研究2006

    • Author(s)
      野瀬 大資
    • Organizer
      土木学会第61回年次学術講演会
    • Place of Presentation
      滋賀県・立命館大学
    • Year and Date
      2006-09-21
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 多径間連続橋における落橋防止ケーブルの必要剛性に関する研究2006

    • Author(s)
      中尾 尚史
    • Organizer
      土木学会第61回年次学術講演会
    • Place of Presentation
      滋賀県・立命館大学
    • Year and Date
      2006-09-21
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Design velocity of unseating prevention cable for bridges2006

    • Author(s)
      Daisuke Nose
    • Organizer
      61st Annual Meeting of JSCE
    • Place of Presentation
      Shiga
    • Year and Date
      2006-09-21
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Necessary stiffness of unseating prevention cable for continuous girder bridges2006

    • Author(s)
      Hisashi Nakao
    • Organizer
      61st Annual Meeting of JSCE
    • Place of Presentation
      Shiga
    • Year and Date
      2006-09-21
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 落橋防止ケーブルの設置に関する一考察2005

    • Author(s)
      中尾 尚史
    • Organizer
      土木学会第60回年次学術講演会
    • Place of Presentation
      東京都・早稲田大学
    • Year and Date
      2005-09-09
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 桁間衝突用緩衝材としての積層繊維補強ゴムの衝撃緩衝効果に関する実験的研究2005

    • Author(s)
      西本 安志
    • Organizer
      土木学会第60回年次学術講演会
    • Place of Presentation
      東京都・早稲田大学
    • Year and Date
      2005-09-09
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Installation of unseating prevention cable for bridges2005

    • Author(s)
      Hisashi Nakao
    • Organizer
      60th Annual Meeting of JSCE
    • Place of Presentation
      Tokyo
    • Year and Date
      2005-09-09
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Shock absorbing effect of reinforced rubber2005

    • Author(s)
      Yasushi Nishimoto
    • Organizer
      60th Annual Meeting of JSCE
    • Place of Presentation
      Tokyo
    • Year and Date
      2005-09-09
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary

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Published: 2005-04-01   Modified: 2016-04-21  

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