摘要
为考虑环形水箱内液体晃动作用对两级变阻尼TMD受力性能的影响,以某实际高耸结构为例,通过ABAQUS软件建立考虑水箱为质点的整体模型以及满水状态和非满水状态的水箱液-固耦合模型,对比分析了不同液-固耦合状态下的两级变阻尼TMD地震响应。研究结果表明:较大地震激励下,考虑液体晃动作用后的两级变阻尼TMD振幅、最大阻尼力更大,并且液体晃动作用抑制了两级变阻尼TMD二级阻尼耗能的充分发挥;随着地震激励作用的增大,液-固耦合模型的基底最大剪力较质点模型大,且基底剪力随地震激励的增大,其增幅也增大。
In order to consider the effect of liquid sloshing in an annular water tank on mechanical performance of a two-stage variable damping TMD,taking an actual high-rise structure as an example,a global model considering the water tank as a particle and the liquid-solid coupling model of the water tank under the full water state and the non-full water state are established by ABAQUS software.The seismic responses of the two-stage variable damping TMD under different liquid-solid coupling states are compared and analyzed.The results show that the amplitude and maximum damping force of the two-stage variable damping TMD considering liquid sloshing are larger under larger seismic excitation,and the sloshing effect of liquid inhibits the full development of the second-stage damping energy consumption of the two-stage variable damping TMD.With the increase of seismic excitation,the maximum base shear force of the liquid-solid coupling model is larger than that of the particle model,and the relative increase amplitude increases accordingly.
作者
区彤
骆杰鑫
林松伟
刘彦辉
OU Tong;LUO Jiexin;LIN Songwei;LIU Yanhui(Guangdong Architectural Design&Research Institute Co.,Ltd.,Guangzhou 510010,China;School of Civil Engineering and Transportation,Guangzhou University,Guangzhou 510006,China;Earthquake Engineering Research and Test Center,Guangzhou University,Guangzhou 510006,China)
出处
《振动工程学报》
北大核心
2025年第8期1870-1877,共8页
Journal of Vibration Engineering
基金
国家重点研发计划项目(2021YFE0112200)
广东省自然科学基金资助项目(2021A1515010586)。
关键词
高耸结构
两级变阻尼
液-固耦合
环形水箱
TMD
地震激励
high-rise structure
two-stage variable damping
liquid-solid coupling
annular water tank
TMD
seismic excitation
