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http://dx.doi.org/10.12652/Ksce.2011.31.5A.341

Aerodynamic Characteristics of Long-Span Bridges under Actively Generated Turbulences  

Lee, Seungho (전북대학교 대형풍동실험센터)
Kwon, Soon-Duck (전북대학교 토목공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.31, no.5A, 2011 , pp. 341-349 More about this Journal
Abstract
The main purpose of this study is to investigate the affect of various turbulence properties on aerodynamic characteristics of twin box bridge section. To achieve this goal, active turbulence generator which successfully simulated various target turbulences was developed in the wind tunnel. From the wind tunnel tests, turbulence integral length scale did not affect on the aerodynamic forces and flutter derivatives except for the $A_1^*$ curve. Turbulence intensity gave slight effect on the unsteady aerodynamic force, but turbulence integral length scale did not affect the self-excited forces except vertical direction component.
Keywords
active turbulence generator; wind tunnel test; aerodynamic admittance function; aerodynamic force; self-excited force; buffeting response;
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