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    Dynamic Reliability of the Buffeting Responses of Suspension Bridges Considering Non-Gaussian Factors

    Source: Journal of Highway and Transportation Research and Development (English Edition):;2013:;Volume ( 007 ):;issue: 004
    Author:
    Hu Jun
    ,
    Ou Jin-ping
    DOI: 10.1061/JHTRCQ.0000345
    Publisher: American Society of Civil Engineers
    Abstract: Based on the accurate analysis of the time history of bridge buffeting responses and considering the nonlinearity factors of the structure and wind load, the non-Gaussian response of a structure is derived. The Hermite moment model is introduced to transform the unknown distribution responses into standard Gaussian random processes based on their first four moments, and the dynamic reliability of the structure under strong wind conditions is then numerically analyzed in combination with the Poisson process method. A long-span suspension bridge at the East Sea of China is analyzed and the buffeting dynamic reliability of the stiffening girder is discussed in detail. The results indicate that (1) the middle support section of the stiffening girder is the critical section under fluctuating wind conditions and the dynamic reliability decreases as the wind speed increases, (2) nonlinear effects in the structure are apparent under strong wind conditions, and (3) the common assumption of Gaussian process will produce inaccurate results and unsafe bridge design.
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      Dynamic Reliability of the Buffeting Responses of Suspension Bridges Considering Non-Gaussian Factors

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    http://yetl.yabesh.ir/yetl1/handle/yetl/72506
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    • Journal of Highway and Transportation Research and Development (English Edition)

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    contributor authorHu Jun
    contributor authorOu Jin-ping
    date accessioned2017-05-08T22:09:31Z
    date available2017-05-08T22:09:31Z
    date copyrightDecember 2013
    date issued2013
    identifier other35474355.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/72506
    description abstractBased on the accurate analysis of the time history of bridge buffeting responses and considering the nonlinearity factors of the structure and wind load, the non-Gaussian response of a structure is derived. The Hermite moment model is introduced to transform the unknown distribution responses into standard Gaussian random processes based on their first four moments, and the dynamic reliability of the structure under strong wind conditions is then numerically analyzed in combination with the Poisson process method. A long-span suspension bridge at the East Sea of China is analyzed and the buffeting dynamic reliability of the stiffening girder is discussed in detail. The results indicate that (1) the middle support section of the stiffening girder is the critical section under fluctuating wind conditions and the dynamic reliability decreases as the wind speed increases, (2) nonlinear effects in the structure are apparent under strong wind conditions, and (3) the common assumption of Gaussian process will produce inaccurate results and unsafe bridge design.
    publisherAmerican Society of Civil Engineers
    titleDynamic Reliability of the Buffeting Responses of Suspension Bridges Considering Non-Gaussian Factors
    typeJournal Paper
    journal volume7
    journal issue4
    journal titleJournal of Highway and Transportation Research and Development (English Edition)
    identifier doi10.1061/JHTRCQ.0000345
    treeJournal of Highway and Transportation Research and Development (English Edition):;2013:;Volume ( 007 ):;issue: 004
    contenttypeFulltext
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