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Preventing the fall of skew and curved bridge decks during earthquake and predicting the pounding response

Research Project

Project/Area Number 12650479
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 構造工学・地震工学
Research InstitutionSAGA UNIVERSITY

Principal Investigator

IJIMA Katsushi  Saga University Civil Engineering Professor, 理工学部, 教授 (60168268)

Co-Investigator(Kenkyū-buntansha) OBIYA Hiroyuki  Saga University Civil Engineering Associate Professor, 理工学部, 助教授 (90264150)
Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2002: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2001: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2000: ¥2,400,000 (Direct Cost: ¥2,400,000)
KeywordsBridge / Seismic proof design / Deck pounding / Preventing deck fall / skew bridge / Curved bridge / Pounding experiment / Response prediction / 衝突振動
Research Abstract

During the Hyougo-Ken-Nanbu earthquake in 1995 and Northridge earthquake in 1994, many decks in skew and curved bridges collapsed. The research dealt with preventing the fall of deck structures by the means of supporting the bridges by rubber bearings and permitting pounding between the decks and the abutments. The crucial point in the research is to clarify the pounding phenomena and the result can predict damage level of deck ends and abutments and can verify the possibility of the proposed means.
From the simulation analyses and the experiments, the research indicated that the pounding between deck and the abutments is a chaos phenomenon but has similarity between the three quantities of input intensity, clearance and response of a deck. Particularly, the clearance is most dominant in determining the maximum response and frequency characteristics of a deck and earthquake wave do not much influence the response.
Since pounding of a deck is a chaotic phenomenon, time history of the response is not reliable but the maximum is rather important in an engineering viewpoint. Even if the response is chaotic, the maximum is governed by energy principle and is predicable. Therefore, the study proposes a predicting equation that satisfies the similarity between the three quantities. When comparing the predicting equation with simulated results and experimental results, the equation well agrees with them. Hence, the predicting equation can estimate the damage level of deck end and abutment during earthquake and can verify the effectiveness of shock absorber developed without simulating the pounding by using complicated model of collision.

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] X.Liengsone, K.Ijima, H.Obiya, N.Kawasaki: "An Experimental Study of Seismic Response of Skew and Curved Decks Pounding with Abutment"Proc.of the Second Int.Conf.on Advances in Structural Engineering and Mechanics, Busan. Full paper on CD-ROM. (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Ijima, X.Liengsone, H.Obiya: "A computational and experimental study on seismic response of skew and curved decks pounding with abutments"Proc.of the First Asian-Pacific Congress on Computational Mechanics, Sydney. 1579-1584 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Ijima, H.Obiya, G.Aramaki, N.Kawasaki: "A Study on preventing the fall of skew and curved bridge decks by using rubber bearings"Structural Engineering and Mechanics. Vol.12, No.4. 347-362 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 井嶋克志, 帯屋洋之, 錦織真樹, 後藤茂男: "ゴム支承支持された中小規模斜桁・曲線桁の地震時衝突応答と落橋防止"土木学会論文集. No.647/I-51. 217-228 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] X. Liengsone, K. Ijima, H. Obiya and N. Kawasaki: "An Experimental Study of Seismic Response of Skew and Curved Decks Pounding with Abutment"Proc. Of the Second Int. Conf. On Advances in Structural Engineering and Mechanics, Busan. Full paper on CD-ROM. (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K. Ijima, X. Liengsone, H. Obiya and N. Kawasaki: "A computational and experimental study on seismic response of skew and curved decks pounding with abutments"Proc. Of the First Asian-Pacific Congress on Computational Mechanics, Sydney. 1579-1584 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K. Ijima, H. Obiya, G. Aramaki and N. Kawasaki: "A Study on preventing the fall of skew and curved bridge decks by using rubber bearings"Structural Engineering and Mechanics. Vol. 12, No.4. 347-362 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K. Ijima, H. Obiya, M. Nishikori and S. Goto: "A study on protection against deck fall of short to middle size of bridge using rubber bearing by permitting impact during an earthquake"Journal of Structural Mechanics and Earthquake Engineering. No.647/I-51. 217-228 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] X.Liengsone, K.Ijima, H.Obiya, N.Kawasaki: "An Experimental Study of Seismic Response of Skew and Curved Decks Pounding with Abutment"Proc. of the Second Int. Conf. on Advances in Structural Engineering and Mechanics, Busan. (CD-ROM). (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Katsushi Ijima, Hiroyuki Obiya, Gunji Aramaki, Noriaki Kawasaki: "A study on preventing the fall of skew and curved bridge decks by using rubber bearings"Structural Engineering and Mechanics, An International Journal. Vol.12, No.4. 347-362 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] K.Ijima, X.Liengson, H.Obiya: "A computational and experimental study on seismic response of skew and curved decks pounding abutments"Proceedings of the First Asian-Pacific Congress on Computational Mechanics, Sydney. Vol.2. 1579-1584 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 井嶋克志,帯屋洋之,錦織真樹,後藤茂夫: "ゴム支承支持された中小規模斜桁・曲線桁の地震時衝突応答と落橋防止"土木学会論文集. No.647/I-51. 217-228 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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