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1989 Fiscal Year Final Research Report Summary

Gust Response of a Box Type Stiffening Girder under the Action of Random Wind Force

Research Project

Project/Area Number 62460151
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 土木構造
Research InstitutionRitsumeikan University

Principal Investigator

KOBAYASHI Hiroshi  Ritsumeikan Univ., Faculty of Science and Engineering, Professor, 理工学部, 教授 (90066712)

Co-Investigator(Kenkyū-buntansha) KAWATANI Mitsuo  Osaka Univ., Faculty of Engineering, Associate Professor, 工学部, 助教授 (00029357)
Project Period (FY) 1987 – 1988
KeywordsActive simulation / Wind turbulence / Aerodynamic admittance / Gust response / Suspension bridge / Field measurement / Fatigue failure / Wind tunnel test
Research Abstract

(1) ACTIVE SIMULATION OF TURBULENCE
Simulation of a natural wind is an important problem for a wind tunnel investigation of gust response of a bridge deck. In the two dimensional wind tunnel simulation of wind turbulence was carried out. The random servo-control of a cascade could produce an arbitrary given turbulence.
(2) WIND TUNNEL MODEL TESTS FOR AERODYNAMIC ADMITTANCE
Numerical treatment of a gust response requires an aerodynamic admittance to be assessed through wind tunnel test. Time series of the random response of bridge models were obtained. Through the time series, random aerodynamic force was analyzed and aerodynamic admittance was obtained.
(3) GUST RESPONSE OF SUSPENSION BRIDGE
The gust response of the suspension bridge as well as wind speed was measured at the site in a strong wind up to 23m/s.
(4) SAFETY OF A SUSPENSION BRIDGE AGAINST GUST LOAD
The amplitude and the number of the stress cycles caused by gust response during the service time were calculated considering the probability of wind speed and direction. Safety of a bridge member against gust load was checked concerning fatigue failure.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] H.Kobayashi,M.Kawatani,O.Nakade: "Vortex-Induced Oscillation of Two-Dimensional Rectangular Cylinders in Large Scale Turbulence" Jour.Wind Engineering. No.37. 19-24 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Kobayashi,S.Komatsu,S.Takei: "Aerodynamic Response of a Mono-Cable Suspension Bridge" Jour.Wind Engneering. No.37. 529-535 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 小林紘士,川谷充郎,中出収,野村浩史,太田圭,畑中章秀: "2次元風洞におけるスケ-ルの大きい乱流の発生" 第10回風工学シンポジウム論文集. 163-168 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Kobayashi,M.Kawatani: "Active Simulation of Turbulent Flow in a Two-Dimensional Wind Tunnel" Proceeding on The 2-nd Asia-Pacific Symposium on Wind Engineering(発表予定). (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Kobayashi, M.Kawatani and O. Nakade: "Vortex Induced Oscillation of Two Dimensional Rectangular Cylinders in Large Scale Turbulence" Jour. of Wind Engineering. No. 37. 19-24 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Kobayashi, S. Komatsu and S. Takei: "Aerodynamic Response of a Mono-Cable Suspension Bridge" Jour. of Wind Engineering. No. 37. 529-535 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Kobayashi, M. Kawatani, O. Nakade, H. Nomura, K. Ohta and A. Hatanaka: "Simulation of Large Scale Turbulence in a Two Dimensional Wind Tunnel" Proc. of the 10th Symposium on Wind Engineering. 163-168 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Kobayashi and M. Kawatani: "Active Simulation of Turbulent Flow in a Two Dimensional Wind Tunnel" Proc. of the 2nd Asia Pacific Symposium on Wind Engineering. (1989)

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

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Published: 1993-03-26  

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