利用浅水水箱作为阻尼器的大连国贸大厦减振控制研究

针对一实际工程结构—大连国贸大厦,研究了风荷载作用下调液阻尼器的减振控制作用。首先建立了该结构的简化计算模型,利用Davenport谱给出了模拟风荷载;在大厦所处的位置进行多次测量,得到实际风速样本,选取其中风速较大、过程平稳的样本,对实测样本与模拟样本的频谱进行比较,验证了模拟风荷载的合理性。文中在大厦顶层设置浅水水箱,将其设计成可减少结构位移及加速度反应的控制装置TLD,以提高大厦在风荷载作用下的舒适度,并给出了高层建筑水箱减振方案实施的设计建议。数值计算结果表明,该大厦顶部设置TLD减振装置后,能有效地控制结构在风荷载作用下的反应。依据本文的TLD设计步骤,可供类似高层建筑进行TLD减小风振控制分析和设计时参考。

Wind-induced vibration control of dalian international trade center using tuned liquid dampers

This paper studies wind-induced vibration control of Dalian International Trade Center using tuned liquid dampers.First,the simplified model of the structure was established and wind load was simulated by Davenport wind model according to the engineering condition.The actual samples of wind speed were obtained at the position of the building.The frequency spectrum of simulated wind load was compared with the one of measured,which verified the correctness of the simulated wind load.There is a water tank on the top of the building for daily use,so it can be designed to be shallow water tank and used as tuned liquid damper(TLD) to reduce structural response of displacement and acceleration.According to the numerical results of different cases,the optimal parameters of TLD was given.The results showed that TLD can reduce the structural response of the building and enhance the comfortableness of the building.