Wind Engineers, JAWE
Online ISSN : 1883-8413
Print ISSN : 0912-1935
ISSN-L : 0912-1935
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Volume 1992, Issue 50
Displaying 1-5 of 5 articles from this issue
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  • Cumulative fatigue damages of nonstructural members under repeated cyclic wind actions
    Naotsune TAGA, Hisashi OKADA, Youngcheol HA
    1992 Volume 1992 Issue 50 Pages 3-18
    Published: February 29, 1992
    Released on J-STAGE: September 28, 2010
    DOIhttps://doi.org/10.5359/jawe.1992.3
    JOURNAL FREE ACCESS
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    This paper describes the fundamental behaviour about cumulative damages of nonstructural members such as glass window sashes under destructive cyclic wind disturbances.The analysis consists of wind modelling for fatigue damages and the formulation to obtain the cumulative damage analysis.First, in modelling the observed strong wind information, three steps of wind action in the long period are selected to discuss the fatigue damage properties.The fist wind model is to present the simple strong wind continuing normally during 20 to 30 hours from annual average about 4 5 m/s to the extreme maximum wind velocity.Next step is to represent the whole annual wind actions using the meteorologically obseved wind velocity per hour.Finally, the return period concept is utilized to the overall fatigue damage of a life time of the structure or members.Accordingly, the damage responses of nonstructural members are presented in three parts.The basic concept to give a quantitative expression of a cumulative fatigue damage is proposed when the simple strong wind is subjected to nonstructural member. The annual cumulative damages and fatigue behaviour in the return period are also discussed on the basis of computed results.One of the most important results is to evaluate the cyclic repeated wind action to structural safety rather than the most large extreme value in the previously observed data.
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  • Experimental study on rain vibration and suppression method of cables in cable-stayed bridges
    Tetun HOIO
    1992 Volume 1992 Issue 50 Pages 19-26
    Published: February 29, 1992
    Released on J-STAGE: September 28, 2010
    DOIhttps://doi.org/10.5359/jawe.1992.19
    JOURNAL FREE ACCESS
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    This paper describes the experimental study on rain vibration and aerodynamic suppression method of cables in cable-stayed bridges using by wind tunnel test. Rain vibration is often observed on cable-stayed bridges when a cable has a smooth surface such as polyethelene covering. In the experiments, the fundamental characteristics of water rivulet on cable surface are investigated. On the basis of the result obtained, countermeasures such as controlling amount or location of water rivulet on cable surface are examined. It is found that scraping of polyethene surface and twisted hexagonal cross section is effective for the suppression of rain vibration.
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  • Damage of power transmission towers and poles due to Typhoon9119 in Kyushu area
    Junji MAEDA
    1992 Volume 1992 Issue 50 Pages 27-30
    Published: February 29, 1992
    Released on J-STAGE: September 28, 2010
    DOIhttps://doi.org/10.5359/jawe.1992.27
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1992 Volume 1992 Issue 50 Pages 31-46
    Published: February 29, 1992
    Released on J-STAGE: September 28, 2010
    DOIhttps://doi.org/10.5359/jawe.1992.31
    JOURNAL FREE ACCESS
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  • TNO Division of Technology for Society Department of fluid dynamics
    Kunio Fujii
    1992 Volume 1992 Issue 50 Pages 47-52
    Published: February 29, 1992
    Released on J-STAGE: September 28, 2010
    DOIhttps://doi.org/10.5359/jawe.1992.47
    JOURNAL FREE ACCESS
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