论文部分内容阅读
为了控制大跨桥梁的颤振,提出了能同时控制桥梁竖向、横向、扭转振动的三向控制器;并将其沿全桥主跨连续布置,提出了相应连续型控制颤振理论.以某大跨斜拉桥梁为实际工程背景,将连续控制器沿主跨连续布置,用优化被动控制理论和ANSYS软件,建立了全桥的有限元模型,通过对未安装控制器和安装不同参数控制器的桥梁有限元对比分析可知,连续型控制器能显著提高颤振临界风速.
In order to control the flutter of long-span bridges, a three-way controller that can control the vertical, lateral and torsional vibration of the bridge simultaneously is proposed. The continuous flutter control theory is put forward along the continuous span of full bridge. A long-span cable-stayed bridge is a practical engineering background. The continuous controllers are arranged continuously along the main span. With the optimized passive control theory and ANSYS software, the finite element model of the full bridge is established. By controlling and installing different controllers Comparison of bridge finite element analysis shows that the continuous controller can significantly increase the critical flutter wind speed.