中文摘要：

为了研究Sc数以及偏心对矩形超高层建筑扭转风振响应的影响,对4个矩形高层建筑模型,通过扭转摆式气弹模型风洞试验测试得到在不同实验风速和Sc数情况的结构角点位移时程。进而讨论了结构扭转向角位移均方根随着各参数的变化规律,分析了结构扭转风振响应机理,为矩形截面超高层建筑的扭转抗风设计提供参考。

英文摘要：

In order to study the effects of Scnumber and structural eccentricity on torsional wind-induced dynamic responses of super-high-rise buildings,the angular displacement time series of four rectangular super high-rise building models under different Scnumbers and test wind speed were obtained based on wind tunnel tests of torsional sway aeroelastic model.The change rules of root mean square（RMS）of angular displacement in torsional direction with different parameters were discussed and the mechanism of torsional wind-induced dynamic responses was analyzed.The experimental results can provide reference for preliminary wind resistant design in torsional direction of super-high-rise buildings.