摘要
首先分析位移、速度和加速度联合反馈的线性最优主动控制策略,并由此设计最优控制力,然后分析了采用可控阻尼器实现的半主动控制策略。在半主动控制下对一栋设置磁流变(可控)阻尼器的10层框架结构进行地震响应分析,研究了楼层位移、层间位移角、楼层速度与楼层加速度等地震反应,并将其结果与主动控制的地震响应进行对比,表明半主动控制亦能得出较好的减震效果,并由此分析了磁流变阻尼器的阻尼系数时程曲线。结果表明,半主动控制效果可以接近主动控制效果,设置可控阻尼器的框架结构在半主动控制下能显著地降低结构的位移、速度和加速度。
In this paper,the linear optimal active control strategy of joint feedback of displacement,velocity and acceleration is analyzed firstly,from which the optimal control force will be designed,and then the semi-active control strategy implemented by controllable damper will be analyzed.Seismic response analysis of a ten-story frame structure with magnetorheological dampers(controllable dampers)under semi-active control is carried out.The seismic response such as floor displacement,interlayer drift angle,floor velocity and floor acceleration are researched and compared with that of active control,which shows that the semi-active control can also obtain a better damping effect,and then the damping time history curves of the magnetorheological dampers are analyzed.The results show that the damping effect of semi-active control can be close to that of the active control,and the frame structure with the controllable damper can significantly reduce the displacement,velocity and acceleration of the structure under semi-active control.
作者
张敏
付熊
Zhang Min;Fu Xiong(School of Civil Engineering and Architecture,Guangxi University of Science and Technology,Liuzhou 545006,China;School of Civil Engineering,Jiangxi Science and Technology Normal University,Nanchang 330013,China)
出处
《工程抗震与加固改造》
北大核心
2020年第5期113-120,共8页
Earthquake Resistant Engineering and Retrofitting
基金
江西省教育厅科学技术重点研究项目(180599)。
关键词
控制
半主动
可控
阻尼器
最优
阻尼力
control
semi-active
controllable
damper
optimal
damping force
