大连国贸大厦高层水箱风振控制研究及应用

本文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,对实测样本和模拟样本的频谱进行比较,验证了模拟风荷载的合理性。文中将大厦顶层的生活水箱设计成可减小结构位移及加速度反应的控制装置TLD(tuned liqu id damper),根据不同工况进行数值计算,选出最佳方案,设计出可实际应用、并达到一定减振效果的减振水箱,以提高大厦在风荷载作用下的舒适度。

Wind-induced vibration control of International Trade Building of Dalian using tuned liquid dampers

This paper focuses on the wind-induced vibration control of International Trade Building of Dalian using tuned liquid dampers.First,the simplified model of the structure was established and the wind load was simulated by the 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 the simulated wind load was compared with the measured one,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 used as a tuned liquid damper(TLD) to reduce the structural response of displacement and acceleration.According to the numerical results of different cases,the optimal parameters of TLD was given.The results show that TLD can reduce the structural response of the building and enhance the comfort of the building.