Test Study on Aerodynamic Performance of Three-Dimensional Stayed Cables in Two-Dimensional Flow Field

Abstract:

Cables, distributed with diversity spatially angle, are rich in wind direction. Circular cross sectional shape is sensitive to the Reynolds number. This paper studed the aerodynamic performance of three-dimentional stayed cable under two-dimensional flow field in Chang'an University wind tunnel by Pitot tube, electronic pressure scanning valve, data conversion and collection systems. The following conclusions are obtained: (1)The stagnation point and the upper and lower airflow separation point clockwise goes on with the wind angle increases. Absolute value of pressure coefficient at stagnation point and separation point are biggest at 0°wind angle.(2)The absolute value of pressure coefficient at upper and lower separation point increase with the increase of wind speed.(3) Pressure stagnation point,and upper and lower airflow separation point don’t changed with the parameters of helix,while pressures near helix changed irregularlly. Drag coefficient decrease with the increase of helix distance and the deduce of helix height. Meaningful references are provided for the further refinement research on aerodynamic performance of cable-stayed with suppressing vibration measures.

• Periodical: Advanced Materials Research (Volumes 532-533)
• Pages: 469-473
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.532-533.469
• Online since: June 2012
• Authors: Xiao Feng Xue, Hua Bai, Yu Li, Wei Li, Sai Gong
• Keywords: Aerodynamic Performance, Bridge Engineering, Stayed Cable, Three-Dimensional Model, Two-Dimensional Flow Field, Wind Pressure Distribution, Wind Tunnel Test

References

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