作　　者： ; ;

机构地区： 华南理工大学土木与交通学院

出　　处： 《建筑结构学报》 2014年第S1期33-38,共6页

摘　　要： 为改善某高度为450 m的超高层建筑结构的风振舒适性,基于线性滤波法模拟研究了该结构顺风向和横风向脉动风荷载时程,采用非线性黏滞阻尼器和调频质量阻尼器相结合的混合减振技术对其开展了风致振动控制研究。结果表明,线性滤波法能够用于模拟超高层结构的脉动风荷载时程,模拟功率谱函数与目标功率谱具有良好的吻合性;混合减振技术不仅有效降低了该超高层建筑结构的风致振动反应,大量耗散风振输入能量,改善结构风振舒适度,而且充分利用结构自身资源设计了调频质量阻尼减振装置,既节省空间,又在一定程度上提高了结构的经济性。 In order to improve wind-induced vibration comfort of a super tall building,along-and cross-wind fluctuating wind loads of the structure were simulated by linear filtering method. Hybrid damping technology composed by TMD and nonlinear viscous dampers was adopted to control the wind-induced vibration responses of the building in wind action. The results show that the linear filtering method provides a good way of simulating the fluctuating wind loads of the structure and well agreement between simulated PSD and target PSD can be found. The wind-induced vibration responses are greatly reduced and energy input by wind action is dissipated effectively by the hybrid damping technology. The wind comfort of the building is improved perfectly. The hybrid damping technology can use fully the own resource of the building to design TMD so as to reduce cost and save architectural space.

关 键 词： 超高层结构 混合减振 调频质量阻尼器 黏滞阻尼器 风振舒适度

领　　域： [建筑科学]