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http://dx.doi.org/10.12652/Ksce.2011.31.2A.097

Buffeting Responses of Concrete Cable-stayed Bridge Considering Turbulent Characteristics of Bridge Site  

Kim, Sung-Ho (대림산업(주) 특수교량팀)
Yhim, Sung Soon (서울시립대학교 토목공학과)
Kwon, Soon-Duck (전북대학교 토목공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.31, no.2A, 2011 , pp. 97-104 More about this Journal
Abstract
This study presents the aerodynamic admittance function of bridge girder under turbulent flow generated from wind velocity spectrum measured at bridge site. Three dimensional buffeting analysis of concrete cable-stayed bridge were performed considering aerodynamic admittance functions obtained from four different methods. It is revealed from the analysis that vertical buffeting responses considering proper aerodynamic admittance functions were just half of that neglecting aerodynamic admittance function. Grid turbulence was found to relatively lower the aerodynamic admittance function at low frequency range, and to underestimate the buffeting wind forces. It is recommended to use the aerodynamic admittance function evaluated from flutter derivatives or measured at active turbulence in order to properly predict the buffeting responses of bridges.
Keywords
concrete cable-stayed bridge; aerodynamic admittance function; active turbulence; buffeting analysis; wind tunnel test;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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