粘弹性阻尼器在控制高层钢结构建筑风振反应中的应用

Application of viscoelastic dampers on the wind resistant of steel tall buildings

研究了用于控制高层钢结构建筑风振反应的粘弹性阻尼器 (VED)设计方法 .通过计算整体结构的有效阻尼比 ,建立了设置VED结构抗风设计的风振系数和脉动增大系数的调整公式 ,得到了设置VED结构在顺风向和横风向的层加速度计算方法 .并以例子证明了VED是一种有效的耗能减振构件 。

A wind resistant design method of steel tall buildings installed with viscoelastic dampers (VED) is presented. On the basis of deriving the effective damping ratio of steel tall building installed with VED, the revised formulas of wind vibration coefficient and fluctuation increment coefficient are established. The calculation methods of storey acceleration responses of the structure suppressed by VED in alongwind and acrosswind directions are obtained. A example of a 50 storey building is adopted to verify that the wind resistant design method of steel tall buildings installed VED presented in the paper is very convenient and effective, and practical for structural engineers.