Wind and Structures

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Static aerodynamic force coefficients for an arch bridge girder with two cross sections

  • Guo, Jian (Institute of Bridge Engineering, Zhejiang University of Technology) ;
  • Zhu, Minjun (Institute of Bridge Engineering, Zhejiang University of Technology)
  • Received : 2019.04.29
  • Accepted : 2020.07.28
  • Published : 2020.09.25
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Abstract

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.

Keywords

Acknowledgement

The research described in this paper was financially supported by the National Key R&D Program of China (2018YFC0809604, 2016YFC0802201) and the National Natural Science Foundation of China (U1709207, 51578506).

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