地震下DMTMD对结构刚度和质量参数摄动的鲁棒性

Robustness of DMTMD to structural stiffness and mass parameter perturbation under earthquake

针对地震作用下高层建筑结构振动控制的鲁棒性问题,文章利用ANSYS软件对建筑结构刚度和质量参数摄动的鲁棒性进行研究。将分布式多重调谐质量阻尼器(distributed multiple tuned mass dampers, DMTMD)控制策略的有效性和鲁棒性分别与仅在结构顶层安置阻尼器的单调谐质量阻尼器(single tuned mass damper,STMD)和多重调谐质量阻尼器(multiple tuned mass dampers,MTMD)控制策略进行对比,比较当结构刚度变化+15%和-15%以及质量参数变化+15%和-15%的控制效果。结果表明,分散控制策略在一定范围的刚度变化时可以有效地抑制结构地震反应,控制效果不仅优于传统的集中控制方法,而且提高了高层结构大系统分散控制的鲁棒性。该文方法可应用于大尺度高层结构振动控制中,实现高层建筑结构地震反应的可靠控制。

In view of the robustness of vibration control for high-rise buildings under earthquake,the robustness of structural stiffness and mass parameter perturbation is studied by using ANSYS software.The effectiveness and robustness of distributed multiple tuned mass dampers(DMTMD)control strategy are compared with those of single tuned mass damper(STMD)and multiple tuned mass dampers(MTMD)control strategies,which only have dampers on the top floor of the structure.The control effects when structural stiffness changes+15%and-15%and mass parameters change+15%and-15%are compared.The results show that the DMTMD control strategy can effectively suppress the structural seismic response when the stiffness changes in a certain range.The control effect is not only superior to the that of traditional centralized control method,but also improves the robustness of decentralized control for large-scale systems of high-rise structure.This method can be applied to the vibration control of large-scale high-rise buildings to achieve reliable control of seismic response of high-rise buildings.