【摘要】 以金沙江通阳大桥的振动控制为研究背景,介绍一种基于有限元分析手段设计多重调谐质量阻尼器(MTMD)参数的方法:利用有限元确定受控模态、质量比、MTMD的安装位置。作为探索性研究,在实验室建立模型拱桥作为控制对象。采用就此方法设计出的一组MTMD优化方案对移动荷载作用下模型拱桥的竖向位移进行控制,最大控制效果可达到36.03%,验证了此方法的有效性。改变质量比另拟定一组方案进行对比实验,通过两种方案控制效果的比较,反映了MTMD参数设计的必要性。更多还原

【Abstract】 Aiming at the vibration control of JinshaRiver Bridge,the method of optimized design of the MTMD parameters based on finite element analysis is introduced. The control model, mass ratio and placement of MTMD are studied. A real model of archbridge is constructed in the lab as the controlled object. The optimized plan is used to control the vertical displacement of archbridge under mobile load, the controlling effect of which can reach to a satisfactory value of 36.03%. Changing the mass ratio, an other plan for comparision is presented and their controlling effects are compared. The results show that parameters design of MTMD is necessary.更多还原