Wind and Structures

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The effect of Reynolds numbers on the steady state aerodynamic force coefficients of the Stonecutters Bridge deck section

  • Hui, M.C.H. (Major Works Project Management Office, Highways Department) ;
  • Zhou, Z.Y. (State Key Laboratory for Disaster Reduction in Civil Engineering and Department of Bridge Engineering, Tongji University) ;
  • Chen, A.R. (State Key Laboratory for Disaster Reduction in Civil Engineering and Department of Bridge Engineering, Tongji University) ;
  • Xiang, H.F. (State Key Laboratory for Disaster Reduction in Civil Engineering and Department of Bridge Engineering, Tongji University)
  • Received : 2005.08.08
  • Accepted : 2007.07.05
  • Published : 2008.06.25
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Abstract

In a wind tunnel experiment employing a reduced scale model, Reynolds number (Re) can hardly be respected. Its effects on the aerodynamics of closed-box bridge decks have been the subject of research in recent years. Stonecutters Bridge in Hong Kong is a cable-stayed bridge having an unprecedented central span of 1018m. The issue of Re sensitivity was raised early in the design phase of the deck of Stonecutters Bridge. The objective of this study is to summarise the results of various wind tunnel experiments in order to demonstrate the effect of Re on the steady state aerodynamic force coefficients. The results may provide an insight on the choice of scale for section model experiments in bridge design projects. Computational Fluid Dynamics (CFD) analysis of forces on bridge deck section was also carried out to see how CFD results are compared with experimental results.

Keywords

References

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  3. Major bridge development in Hong Kong, China-past, present and future vol.5, pp.4, 2011, https://doi.org/10.1007/s11709-011-0136-4
  4. Full-bridge aeroelastic model wind tunnel tests for the Stonecutters Bridge vol.20, pp.2, 2013, https://doi.org/10.1080/1023697X.2013.794554
  5. Numerical Simulation of Aerostatic Force Coefficients of Bridge Decks Using Continuous Torsional Motion Technique vol.31, pp.5, 2018, https://doi.org/10.1061/(ASCE)AS.1943-5525.0000896
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