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Wind and Structures
  Volume 31, Number 3, September 2020 , pages 209-216

Static aerodynamic force coefficients for an arch bridge girder with two cross sections
Jian Guo and Minjun Zhua

    Aiming at the wind-resistant design of a sea-crossing arch bridge, the static aerodynamic coefficients of its girder (composed of stretches of π-shaped cross-section and box cross-section) were studied by using computational fluid dynamics (CFD) numerical simulation and wind tunnel test. Based on the comparison between numerical simulation, wind tunnel test and specification recommendation, a combined calculation method for the horizontal force coefficient of intermediate and small span bridges is proposed. The results show that the two-dimensional CFD numerical simulations of the individual cross sections are sufficient to meet the accuracy requirements of engineering practice.
Key Words
    static aerodynamic force coefficients; numerical simulation; girder; wind tunnel test; arch bridge
Jian Guo and Minjun Zhua: Institute of Bridge Engineering, Zhejiang University of Technology,288 Liuhe Road Hangzhou 310023, China

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