论文部分内容阅读
随着大跨径斜拉桥的不断建设 ,斜拉索的减振特别是风雨振的控制已成为该类桥梁急需解决的关键问题之一。岳阳洞庭湖大桥建成通车后已发生多次强烈风雨振 ,在对应用磁流变智能阻尼减振技术控制风雨振研究的基础上 ,全面评估了该技术控制拉索振动的实际效果 ,证明该阻尼器是拉索风雨振控制的有效手段。岳阳洞庭湖大桥全桥安装磁流变阻尼器后 ,加速度响应降低为原加速度的 1/ 2 0～ 1/ 30。
With the continuous construction of long-span cable-stayed bridges, the damping of the stay cables, especially the control of the wind and rain, has become one of the key issues urgently needed for such bridges. After the Yueyang Dongting Lake Bridge was completed and opened to traffic, several strong wind and rain oscillations have occurred. Based on the research on the control of wind and rain vibration using the magnetorheological intelligent damping vibration control technology, the actual effect of this technology on the cable vibration control is fully evaluated. Is an effective means of cable vibration control. After the magnetorheological damper is installed on the bridge of Yueyang Dongting Lake Bridge, the acceleration response is reduced to 1/2 0 ~ 1/30 of the original acceleration.