MTLCDI控制连体超高层建筑风振响应研究  

Mitigation effects of MTLCDI on wind-induced responses of linked high-rise buildings

作　　者：王钦华[1] 吴华晓 田华睿 唐意 贾彬[1] WANG Qin-hua;WU Hua-xiao;TIAN Hua-rui;TANG Yi;JIA Bin(School of Civil Engineering and Architecture of Southwest University of Science and Technology,Mianyang 621010,China;Department of Civil and Environmental Engineering,Shantou University,Shantou 515063,China;China Academy of Building Research,Bejing 100013,China;State Key Laboratory of Building Safety and Built Environment,Bejing 100013,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010 [2]汕头大学土木与环境系,广东汕头515063 [3]中国建筑科学研究院有限公司,北京100013 [4]建筑安全与环境国家重点实验室,北京100013

出　　处：《振动工程学报》2022年第4期976-988,共13页Journal of Vibration Engineering

基　　金：四川省科技厅资助项目(2020JDTD0021,2020YFG0183);西南科技大学自然科学基金资助项目(21ZX7150);建筑安全与环境国家重点实验室开放课题基金资助项目(BSBE2021-11)。

摘　　要：将惯容元件与安装在连体超高层建筑各自原有的水箱串联组成多调谐液柱惯容阻尼器(MTLCDI),用于控制连体超高层建筑的风振响应。MTLCDI不仅发挥水箱供水和消防的功能,还利用惯容元件的质量放大效应使其在实际质量较小的情况下有效控制主体结构的风致响应。建立了MTLCDI控制连体超高层建筑风振响应的非线性运动方程,用等效线性化方法讨论该方程的解;结合测压风洞试验,以某一连体超高层建筑为工程实例分析MTLCDI的振动控制效果;将MTLCDI控制效果与单、多调谐质量惯容阻尼器(TMDI,MTMDI)、单调谐液柱惯容阻尼器(TLCDI)的控制效果进行比较。结果表明:与其他3种阻尼器相比,MTLCDI能有效减小连体超高层建筑的风致加速度响应、脉动位移响应和层间位移角,还兼具有效利用建筑物各自水箱和节省安装空间的优势。研究结果为连体超高层建筑风振控制设计提供参考。The research integrates inertial elements with water tanks to develop inerter-based multi-tuned liquid column dampers(MTLCDI)for mitigating wind-induced vibration of linked high-rise buildings.MTLCDI not only exploits functions of the water tanks installed on each high-rise building for daily water supply and firefighting,but also utilizes mass amplification effects of inertial elements for wind-induced vibration control.Non-linear governing differential equations of motion are formulated to model MTLCDI controlling wind-induced responses of linked high-rise buildings,and the equivalent linear method is verified to solve the non-linear equations.Linked high-rise buildings are adopted as a case to investigate the control effects of MTLCDI on the buildings excited by wind loads obtained from wind tunnel tests.The mitigation effects of optimal MTLCDI installed on the linked high-rise buildings are compared with those of three other devices(i.e.,TMDI,MTMDI,and TLCDI).It is found that MTLCDI is more effective to reduce wind-induced acceleration,fluctuating displacement,and inter-story drift ratio of the buildings.Besides,MTLCDI also takes advantage of the water tanks and saving installation space of each building.These findings can be useful for the wind-induced vibration control design of linked high-rise buildings.

关 键 词：惯容元件 多调谐液柱阻尼器 连体超高层建筑 风振控制 风洞试验 

分 类 号：TU311.3[建筑科学—结构工程] TU973.21