Study On Surface Pressure Distribution Test Of Stayed-cable Using Aerodynamic Measure

Stayed-cable is being considered as an important component of cable-stayed bridge, withcharacteristics of its low quality, stiffness and damping. Causing different problems includingvortex-induced vibration, parametric vibration, cable buffeting, and rain-wind-inducedvibration, stayed-cable vibration are increasingly given attention, among whichrain-wind-induced vibration brings the most serious damage in its high amplitude because ofits easy conditions to meet. Since it has a crucial effect on cable-stayed bridge design,research on rain-wind-induced vibration and its control measure become prevailing in bridgeengineering and structural wind engineering.Based on the theory of stayed-cable rain-wind-induced vibration, this paper describeswind-induced vibration and its control measure in cable-stayed bridge, the research method ofrain-wind-induced vibration in cable, and the current research situation. Through comparingdifferent aerodynamic control measures in wind pressure test of ZhiJiang Bridge cable, thispaper analyses the variation rules of two and three dimensional cable surface pressuredistribution in different aerodynamic measures and cable aerodynamic coefficient in differentsurface conditions. Additionally, this paper provide theoretical basis for future research.Meanwhile, this paper compares the different results of cable surface wind pressurecoefficient obtained from wind tunnel test and CFD numerical simulation. The analysisdemonstrates that the coefficients in two different methods have similar trends. Therefore, wecan confirm the accuracy of CFD numerical simulation and conclude a universal rule. At last,this paper will be helpful to further accurate and detailed research on the influence ofaerodynamic measure.