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Study of Correlation Between Lift and Drag Forces with Wave Attacking Height of Cross-sea Bridge Based on FLUENT

Zhang Xiantang1,2,Gao Kangning1,2,Zhou Hongmin2,Wang Hongli 1(1.Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation,Shandong University of Science and Technology,Qingdao,Shandong 266590,China;2.College of Civil Engineering and Architecture,Shandong University of Science and Technology,Qingdao,Shandong 266590,China)  
During the designing of cross-sea bridge,bridge elevation agreement with the road of both sides and coordination with the surrounding landscape and other factors should be considered,so the bridge elevation will be limited.When the water level below cross-sea bridge deck becomes higher,the bridge may be partly or totally submerged in the water.Huge hydraulic wave impact will act on the bridge superstructure and have a bad effect on the safety and reliability of the bridge.In this paper,two-dimensional wave tank was established by FLUENT12.0software,and various numerical models under different wave working conditions were established to analyze correlation between wave force on the bridge superstructure and wave attacking height.Moreover,the relationship between the lift and drag coefficients and wave attacking height was studied.According to the results,optimizing bridge girder design will help improve the ability to resist the wave loads and also provide a reference in seeking effective means and measures to reduce the impact of wave.
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