小高层建筑中屋顶花园TMD的振动控制作用

Vibration control effect of roof garden as a TMD in mid-rise building

采用振型分解反应谱法,分析了小高层建筑屋顶花园作为TMD的减震原理和该TMD与主体结构频率比和质量比的变化规律,并阐述了对TMD的最优参数设计;最后对屋顶花园TMD的抗震效果进行了对比分析,用算例验证了该方法用于控制地震反应的可行性,因而可有效地用以减轻城市地震灾害。

This paper, by taking roof garden as TMD in mid-rise building, discusses the shock reduction principle and the change rule of frequency ratio and mass ratio between TMD and structure,based on the modal analysis response spectrum. The TMD＇s optimal parameters design is explained. A contrast analysis is carried out for earthquake resistant effect and the feasibility of this methsd in use to seismic response control is verified with calculation examples. Therefore this method can be used to reduce urban earthquake damage efficiendy.