中文摘要：

针对目前斜拉桥拉索减振方法的不足,提出利用防振锤抑制拉索振动的思路。为验证该方法的有效性,本文分别建立了拉索和防振锤的运动方程,并采用振型叠加法建立与其对应的广义坐标方程,采用状态空间法建立与其对应的状态方程,运用SIMULINK仿真系统对拉索进行了动力仿真分析。设计了相应的室内试验,进行了拉索-防振锤组合系统试验,并利用SIMULINK对试验进行了相同参数的仿真分析,对比验证了防振锤减振的有效性。仿真结果与试验结果对比发现,作为拉索减振装置防振锤减振效果较为显著,对于防振锤的设计应使其振动频率与拉索振动频率相一致、安装质量不宜过小、阻尼不宜太大、且宜安装在拉索振幅较大处。研究结果表明：防振锤抑制拉索的振动是有效的,利用防振锤装置抑制超长拉索振动是可行的。

英文摘要：

For reducing the deficiency of the current vibration method for stayed-cable in cable-stayed bridge, the idea of using vibration damper is put forward. In order to verify the effectiveness of this method, motion equations were formulated for a system combined by a cable and vibration damper, and the system has been transformed into modal equations in terms of the generalized coordinates with the mode superposition method, and the corresponding state equation is established by using the state space method, and its dynamic simulation has been implemented with the SIMULINK. The experiment of cable-damper system was carried out too, and the simulations of the same parameters were conducted by SIMULINK. It was found that the vibration reduction effect of the vibration damper is remarkable. The vibration frequency of the vibration damper should be consistent with the vibration frequency of the stay cable, and the installation quality should not be too small, and it should be installed in the larger cable ampli- tude. The results also show that the dampers are effective in restraining the cable vibration, and it is feasible to suppress the vibration of the long cable by using the vibration damper.