某大宽厚比超高层建筑风致扭转效应及风振控制研究  

Research on wind-induced torsional vibration response and vibration control of super-tall building with a large side ratio

作　　者：张磊[1] 李波[2] 甄伟[1] 徐怀兵 盛平[1] 徐晓晖[4] ZHANG Lei;LI Bo;ZHEN Wei;XU Huaibing;SHENG Ping;XU Xiaohui(Beijing Institute of Architectural Design,Beijing 100045,China;School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Beijing International Cooperation Base for Science and Technology-Aseismic Research of the Rail Transit Engineering in the Strong Motion Area,University of Science and Technology Beijing,Beijing 100083,China;The Third Construction Co.,Ltd.of China Construction Eighth Engineering Division,Nanjing 210046,China)

机构地区：[1]北京市建筑设计研究院有限公司,北京100045 [2]北京交通大学土木建筑工程学院,北京100044 [3]北京科技大学强震区轨道交通工程抗震研究北京市国际科技合作基地,北京100083 [4]中建八局第三建设有限公司,江苏南京210046

出　　处：《建筑结构学报》2023年第4期87-97,共11页Journal of Building Structures

基　　金：国家自然科学基金青年基金项目(51708027);国家重点研发计划(2018YFC0705600)。

摘　　要：为了探究某大宽厚比超高层建筑的风致扭转效应及风振控制措施,开展了刚性模型风洞测压试验。对该建筑在不同风向角下的基底力矩系数、风振加速度响应和等效静风荷载进行了研究,分析扭转效应对舒适度指标的影响;针对结构风振加速度较大和平扭振动耦合的特点,采用主被动混合调谐质量阻尼器(ATMD)进行了结构的风振响应控制,并对ATMD控制系统的控制参数确定、地震等极端工况下质量块行程进行了研究。结果表明:大宽厚比建筑基底扭矩系数较大,且扭转向风致效应与沿建筑短边方向风致效应相关性较强,风致扭转效应对结构加速度响应有显著影响;大宽厚比建筑的横风向、扭转向的风荷载计算已超过现行建筑结构荷载规范的适用范围,且不能忽略,需通过风洞试验及风振响应分析确定;ATMD可以同时控制结构的平动和扭转风振响应,提高结构风振舒适度水平。To investigate the wind-induced torsional effect and wind-induced vibration control measures of the super-tall building with a large side ratio,a pressure test on rigid model in the wind tunnel was conducted.Base-moment coefficients,wind-induced acceleration responses and equivalent static wind loads of the building under varying wind directions were studied,and effects of torsion on comfort index were analyzed.Aiming at the large wind vibration acceleration and the coupling of translational vibration and torsional vibration,the active/passive switchable hybrid tuned mass damper(ATMD)was used to control the wind-induced vibration of the structure.The parameters of ATMD and the mass strokel under extreme conditions such as earthquake excitation were studied as well.The results show that the building with a large side ratio has larger base-torque coefficients,the correlation of wind-induced effect between torsion and y-direction(paralleled to building short side)translation is significantly strong.The wind-induced torsional effects have a prominent contribution to acceleration responses.The calculation of lateral and torsional wind loads of the building with large side ratio exceeds the applicable scope in current code and cannot be ignored,thus they have to be determined by wind tunnel test and wind vibration response analysis.ATMD can simultaneously control the translational and torsional vibration responses of the structure induced by wind,and improve the wind vibration comfort of structure.

关 键 词：超高层建筑 大宽厚比 风洞试验 风致扭转效应 风振控制 混合控制 

分 类 号：TU973[建筑科学—结构工程] TU352.2