Study on Surface Pressure Distribution Test of Stayed-Cable Using Aerodynamic Measure

Abstract:

Stayed-cable was being considered as an important component of cable-stayed bridge, with characteristics of its low quality, stiffness and damping, among which rain-wind-induced vibration brings the most serious damage in its high amplitude because of its easy conditions to meet. This paper based on the theory of stayed-cable rain-wind-induced vibration, Through comparing different aerodynamic control measures in wind pressure test of ZhiJiang Bridge cable, this paper analyses the variation rules of two and three dimensional cable surface pressure distribution in different aerodynamic measures and cable aerodynamic coefficient in different surface conditions. The results show that: the wind angle influenced surface wind pressure coefficients and aerodynamic coefficient larger, especially between 25 ° and40 °; when the water was between 40 ° and70 °, the aerodynamic coefficient changed obviously, may happen galloping; It recommend that the cable helix parameter K1 was larger and K2 was between 0.01 and 0.03.

• Periodical: Advanced Materials Research (Volumes 1065-1069)
• Pages: 851-855
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1065-1069.851
• Online since: December 2014
• Authors: Sai Gong*, Peng Tang, Cheng Kun Wang
• Keywords: Aerodynamic Coefficient, Aerodynamic Measure, Cable-Stayed, CFD Numerical Simulation, Rain-Wind-Induced Vibration, Wind Pressure Coefficient

References

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