With the ever increase of the building height,the structural natural frequency becomes more and more closer to the predominant frequency of the strong wind,and therefore the building acceleration induced by wind load become increasingly prominent.The viscous damper is a kind of velocity-dependent damper without additional stiffness,which can reduce the vibration response of the structure under both earthquake and wind.The mathematical model of the optimal geometric parameter of the reverse toggle brace damper system is formulated.The procedure to find the optimal geometric parameter of the reverse toggle brace damper system is also discussed in detail.Besides,a new optimal design method to find the optimal placement,number and damping coefficient of viscous damper systems under the constraint of human comfort performance and additional damping ratio is proposed.A real 250 meter super tall residential building project is employed to illustrate the effectiveness and applicability of the proposed optimal wind-induced vibration attenuation design of viscous damper systems for super tall structures.%随着超高结构高度的不断增加,结构的自振频率与强风的卓越频率越来越接近,结构的风振舒适度问题变得愈发显著.黏滞阻尼器是一种无刚度的速度相关型阻尼器,可以有效减小结构在地震作用和风荷载下的振动响应.以反向肘节式黏滞阻尼系统为研究对象,建立了反向肘节式黏滞阻尼系统几何参数优化的数学模型,并提出了反向肘节式黏滞阻尼系统几何参数优化的方法.此外,还提出了一种超高结构黏滞阻尼系统风振减振优化设计方法,该方法可以求得在满足舒适度、阻尼器在50年一遇风下最大功率、中震最大出力约束条件下,黏滞阻尼系统的最优布置位置、数量和阻尼系数.最后以某250 m超高层住宅为工程案例,验证提出的超高结构黏滞阻尼系统风振减振优化设计方法的有效性和适用性.
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