（南京航空航天大学航空宇航学院， 南京 210016）

［摘要］针对复杂体型和有气动干扰下超高层多塔连体建筑的风致响应和等效风荷载问题，以某超高层三塔连体建筑为工程背景，首先在大型边界层风洞中模拟的B类风场、两种工况共72个风向角下对其进行了刚体模型测压试验，采集了该建筑表面的脉动风压时程，并基于已提出的可完全考虑背景、共振及其耦合项的风振精细化计算方法“一致耦合法”，完成了主塔建筑在单体和考虑周边多塔干扰两种工况下的风致响应分析，得到了主塔顶部的位移、加速度响应、基底内力和位移风振系数；同时对该建筑进行了不同重现期、风向角和阻尼比时的层等效静风荷载（ESWLs）研究；最终探讨了超高层三塔连体建筑风效应的干扰作用机理。试验方法、计算理论和主要研究结论可作为此类超高层多塔连体建筑抗风设计的参考依据。

［关键词］超高层多塔连体建筑； 风洞试验； 等效静力风荷载； 风致响应； 干扰效应

中图分类号：TU973.2+13， TU312+-1文献标识码：A文章编号：1002-848X(2018)21-0103-06

Study on wind-induced response and equivalent static wind loads of super-tall multi-tower connected building based on wind tunnel tests

Wang Hao，Ke Shitang

(College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

Abstract:Aiming at the problem of wind-induced response and equivalent wind load of super-tall multi-tower connected building with complex shape and aerodynamic disturbance, a super-tall three-tower connected building was taken as the engineering background. The rigid-body model pressure test was carried out in the large-scale boundary layer wind tunnel under the simulated B-type wind field and 72 wind directions under two working conditions. The time-history of fluctuating wind pressure on the building surface was collected. Based on the proposed “uniform coupling method” which can consider the background, resonance and coupling terms of wind vibration, the wind-induced response analysis of the main tower building under two working conditions of single tower and multi-tower interference was completed. The displacement, acceleration response, internal force and displacement wind-induced vibration coefficients at the top of the main tower were obtained, and the equivalent static wind loads (ESWLs) at different recurrence periods, wind direction angles and damping ratios were studied. Finally, the interference mechanism of wind effect on the super-tall three-tower connected building was discussed. The test method, calculation theory and main conclusions  could be used as reference for wind resistance design of super-tall multi-tower connected buildings.

Keywords:super-tall multi-tower connected building; wind tunnel test; equivalent static wind load; wind-induced responses; interference effect

*国家自然科学基金（51878351,51761165022,U1733129），江苏省研究生科研与实践创新计划项目（KYCX18_0244)。

通讯作者：柯世堂，博士，教授， Email：keshitang@163.com。