洞庭湖大桥拉索风雨振中的风场参数

Wind parameters in wind-rain induced stay cable vibration on Dongting Lake Bridge

以岳阳洞庭湖大桥斜拉索风雨振现场观测实验为背景,介绍了现场实验的基本情况,对部分信号进行了时程分析。通过对有效数据的统计处理,以图例形式定量地揭示了风速、风偏角和攻角3个风场参数与拉索振动的关系,并将分析结果与国内外的研究成果进行了比较。对风雨振研究工作提出了一些建议。

The process of field experimental tests of wind-rain induced stay cable vibration on Dongting Lake Bridge is briefly introduced; the time history of part of the response signals of cable is analyzed; and through statistically processing of valid data,the quantitative relationship between cable vibration and three wind parameters,i.e.wind velocity, yaw angle and angle of attack is diagrommatized.The results are compared with those reported in other papers,and finally, some suggestions about the research of wind-rain induced stay cable vibration are put forward.