（1 上海中森建筑与工程设计顾问有限公司，上海 200120；2 同济大学土木工程防灾国家重点实验室, 上海 200092）

［摘要］基于高频天平测力风洞试验技术，在6种模拟湍流边界层风场中对12个不同长细比及厚宽比的矩形截面超高层建筑模型的气动力进行了测量，计算得到了各试验工况下的横风向气动力系数的导数，并分析了长细比、厚宽比及来流风场湍流强度对其的影响，同时给出了相应的拟合公式。在此基础上，进一步分析了超高层建筑横风向准定常气动阻尼比及驰振临界风速的变化规律。试验结果和分析结论可为超高层建筑的抗风设计提供参考。

［关键词］超高层建筑; 驰振; 横风向气动力系数; 气动阻尼比; 驰振临界风速

中图分类号：TU317      文献标识码：A      文章编号：1002-848X(2014)19-0016-05

Wind tunnel test study on across-wind galloping stability of super tall buildings

Wu Di1,2, Quan Yong2, Gu Ming2

 (1 Shanghai Johnson Architectural & Engineering Designing Consultants Ltd., Shanghai 200120, China; 2 State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)

Abstract: Based on HFFB wind tunnel test technology, the aerodynamic force of twelve rectangular-section super tall building models with different slenderness ratios and thickness-width ratios in six simulated wind field with different turbulence intensities were tested. The derivatives of across-wind aerodynamic coefficients under different test load cases were calculated. The effects of slenderness ratios, thickness-width ratios and turbulence intensities on the differential coefficients of the across-wind aerodynamic coefficients on the wind direction angle were analyzed, and the relevant fitting equations were given. Based on this, further analysis of across-wind quasi-steady aerodynamic damping ratio and critical wind speed of galloping were made. Test results and analysis conclusions provide reference for the wind design of super tall buildings.

Keywords: super tall building; galloping; across-wind aerodynamic coefficient; aerodynamic damping ratio; critical wind speed of galloping

*国家自然科学基金项目（50878159）。

作者简介：吴迪，硕士研究生，Email：wudihao999@hotmail.com。

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