Journal of South China University of Technology(Natural Science Edition) ›› 2021, Vol. 49 ›› Issue (12): 101-112.doi: 10.12141/j.issn.1000-565X.210051

Special Issue: 2021年交通运输工程

• Traffic & Transportation Engineering • Previous Articles     Next Articles

The Study of Wind Tunnel Test and Numerical Simulation of Aerodynamic Interference on Adjacent Three Separated Deck Bridges

ZHANG Xiang1 YAN Quansheng1 JIA Buyu1 LIU Muguang1,2 YU Xiaolin1   

  1. 1． School of Civil Engineering and Transportation，South China University of Technology，Guangzhou 510640，Guangdong，China;
    2． State Key Laboratory of Subtropical Building Science，South China University of Technology，Guangzhou 510640，Guangdong，China
  • Received:2021-01-29 Revised:2021-04-26 Online:2021-12-25 Published:2021-12-01
  • Contact: 贾布裕(1983-)，男，博士，副教授，主要从事桥梁振动及安全评估研究。 E-mail:ctjby@scut.edu.cn
  • About author:张翔(1994-)，男，博士生，主要从事大跨度桥梁抗风研究。
  • Supported by:
    Supported by the National Natural Science Foundation of China(51608207,51978285),the Natural Science Foundation of Guangdong Province(2019A1515011941) and the China Scholarship Council(201806155102,201906155028)

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Abstract: The aerodynamic interference on the adjacent three separated deck bridges in different altitude difference ratios was investigated by CFD and is verified by the wind tunnel test. The altitude difference ratio (H/D0) is within the range of -2 and +2, where H is the difference of centroid height between the middle box beam and the two sides symmetrical composite girders and D0 is the height of the middle box. The numerical simulation results show that the downstream composite beams have an inhibition effect on the vortex shedding of the middle box beams in a certain range of height difference. At the actual spacing in project, the mean values of the aerodynamics of the adjacent three separated deck bridges are interfered with each other obviously and regularly in the range of H/D0 stu-died in this paper. The aerodynamic interference of middle box girder is the largest, that of the downstream girder takes second place, and that of the upstream girder is the least.


Key words:

adjacent bridge, multiple deck, aerodynamic interference, wind tunnel test

CLC Number: