Structural Design of Experimental Study on Rain-Wind-Induced Vibration of Strayed Cables
To study the aerodynamic characteristics of strayed cable under wind and rain, with the object of the Zhijiang bridge, pressure experiments on the 2- and 3-dimensional models of stay cables in wind tunnel are made. Mean and fluctuating wind-pressure coefficients with 2 kinds of surface morphology under different wind direction angle are obtained. The results show that the rivulet position will greatly influence the distribution of pressure coefficients on the cable surface, and the separation point of the flow nearby the rivulet will be changed obviously. Aerodynamic coefficients will be changed when the rivulet be in a certain position, then the rain-wind-induced vibration will occur .The experimental results will be the guidance for the wind-resistant design and the safe production of the long-span cable-stayed bridges.
Suozhang Cai and Mingli Li
W. Li et al., "Structural Design of Experimental Study on Rain-Wind-Induced Vibration of Strayed Cables", Advanced Materials Research, Vols. 532-533, pp. 412-416, 2012