斜拉桥拉索风雨振动二次轴向流影响分析

Investigation of Second Axial Flow in Rain-wind Induced Vibrationof Stay Cables in Cable-Stayed Bridges

对斜拉桥拉索风雨振动中二次轴向流的产生及作用机理进行分析.认为二次轴向流的产生应从三维边界层的理论出发,而二次轴向流对风雨振动的影响则认为与翼型的基底射流(base-bleed)作用机理相似.

This study attempts to clarify mechanism of a secondary axial flow in rain-wind induced vibration of the stay cables in cable stayed bridge. This secondary axial flow is considered to result from the three dimensional shear layers, and it plays a similar role to that of the base-bleed from the blunt trailing edge.