Experimental research on the pressure distribution on the cable surface based on pneumatic measures

Sai Gong

doi:10.1117/12.2634897

25 April 2022 Experimental research on the pressure distribution on the cable surface based on pneumatic measures

Sai Gong

Proceedings Volume 12244, 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022); 122443J (2022) https://doi.org/10.1117/12.2634897
Event: 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022), 2022, Guilin, China

Abstract

Stay cables are an important part of cable-stayed bridges, 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. Based on the wind-rain-induced vibration theory of cable-stayed bridges, this paper introduces the wind-induced vibration and control measures of cable-stayed bridges, and the research methods of cable-stayed wind-rain-induced vibration. The results show that: Only when the upper waterline is at a position angle of 40°~70°, the aerodynamic coefficient changes significantly, and galloping may occur. From the perspective of wind resistance, a stay cable with a larger spiral parameter K1 and K2 between 0.01 and 0.03 should be selected according to the actual situation.

Citation Download Citation

Sai Gong "Experimental research on the pressure distribution on the cable surface based on pneumatic measures", Proc. SPIE 12244, 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022), 122443J (25 April 2022); https://doi.org/10.1117/12.2634897

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