Frontiers of Structural and Civil Engineering
>> 2009,
Volume 3,
Issue 3
doi:
10.1007/s11709-009-0048-8
Research articles
Experimental study of aerodynamic interference
effects on aerostatic coefficients of twin deck bridges
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;
Available online: 2009-09-05
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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.
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