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Frontiers of Structural and Civil Engineering

Front. Struct. Civ. Eng.    2009, Vol. 3 Issue (3) : 292-298
Research articles
Experimental study of aerodynamic interference effects on aerostatic coefficients of twin deck bridges
Zhiwen LIU 1, Zhengqing CHEN 1, Gao LIU 2, Xinpeng SHAO 3,
1.Wind Engineering Research Center, Hunan University, Changsha 410082, China; 2.China Highway Planning and Design Institute Consutants, INC., Beijing 100000, China; 3.Shandong Provincial Communications Planning and Design Institute, Jinan 250000, China;
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Abstract The aerodynamic interference effects on aerostatic coefficients of twin deck bridges with large span were investigated in detail by means of wind tunnel test. The distances between the twin decks and wind attack angles were changed during the wind tunnel test to study the effects on aerodynamic interferences of aerostatic coefficients of twin decks. The research results have shown that the drag coefficients of the leeward deck are much smaller than that of a single leeward deck. The drag coefficients of a windward deck decrease slightly compared with that of a single deck. The lift and torque coefficients of windward and leeward decks are also affected slightly by the aerodynamic interference of twin decks. And the aerodynamic interference effects on lift and torque coefficients of twin decks can be neglected.
Keywords twin decks      aerodynamic interference effects      aerostatic coefficients      wind tunnel test      
Issue Date: 05 September 2009
 Cite this article:   
Zhiwen LIU,Gao LIU,Zhengqing CHEN, et al. Experimental study of aerodynamic interference effects on aerostatic coefficients of twin deck bridges[J]. Front. Struct. Civ. Eng., 2009, 3(3): 292-298.
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Articles by authors
Zhiwen LIU
Zhengqing CHEN
Xinpeng SHAO
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