研究目的：针对高速铁路站房大跨楼盖工程，通过建立有限元整体模型，研究此类建筑中大跨楼盖的振 动特性;采用结构减振控制理论，选取多重调频质量阻尼器（MTMD)装置对结构在各种人群荷载作用下的振 动进行控制与舒适度设计。 研究结论：(1)通用有限元分析软件平台建立的三维结构分析模型，可以对多种人群荷载工况下减振前 后楼盖结构的动力响应进行全过程分析，并从峰值加速度指标方面对减振前后的结构进行了对比分析； (2)采用MTMD减振方案可以有效降低楼盖结构在人群荷载工况下的振动加速度峰值，使结构满足人群荷载 作用下的舒适度要求，起到良好的减振效果；（3)该研究成果可为同类大跨度楼盖的振动控制和舒适度设计 理论 。

Research purposes: For the large span floor of high speed railway station，through the establishment of finite element model，the vibration properties of the large - span floors in the structure were studied. The theory of structural vibration control was used and multiple tuned mass dampers (MTMD ) was selected and used to control the comfort degree and the vibration of the structure in the crowd loads. Research conclusions:( 1 ) The three - dimensional structure analysis model establislied by general finite element analysis software platform can analyze dynamic response of floor structure under various crowd load conditions before and after damping in the whole construct course，and compare the structures before and after the vibration in terms of peak acceleration index. (2) The MTMD scheme can effectively reduce the vibration acceleration peak of floor in the crowd load，which can make the structure meet requirements of degree of comfort in vibration caused by human and have good effect to control the vibration. (3) The research results can provide a theoretical reference and technical support of vibration control and comfort design of similar large span floor