一种新型半主动摩擦阻尼器的耗能性能研究
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摘要
文章针对被动摩擦阻尼器滞回曲线不饱满,对结构响应控制效果有待于进一步提高的特点提出了一种具有简单控制律的Off-On半主动摩擦阻尼器。阐明其工作机理,建立了半主动摩擦耗能减震结构的动力方程,通过时程分析计算讨论了一安装半主动摩擦阻尼器的结构在地震作用下的响应控制效果,并与无控结构和被动控制结构进行了对比分析。结果表明,本文所提出的Off-On半主动摩擦阻尼器能够大大减小地震作用对结构的破坏,在有效减小结构位移响应的同时,对层间剪力的控制效果也非常显著,滞回曲线非常饱满,耗能性能优良,对结构的控制效果优于传统的被动摩擦阻尼器。
Aim.Different from past semi-active friction dampers,ours uses simple control law and is easy to implement;as to the relatively full hysteresis loop,it is as good as the best of past semi-active friction dampers.Section 1 of the full paper explains the calculation model of our semi-active friction damper and its control,which is described with the help of Fig.1(b).Section 2 derives and solves the dynamic equations of a structure with our semi-active friction damper;we point out that eqs.(10) through(13) are the most important.Section 3 gives a numerical example;the results,presented in Figs.3 through 6,and their analysis show preliminarily that:(1) our semi-active friction damper significantly reduces the seismic response of the structure;(2) the displacement and interstorey shear force of the structure are much smaller than the structure that does not have our semi-active friction dampers;(3) the hysteresis loop of our semi-active friction damper is relatively full.All the above implies that our off-on semi-active friction damper has good capability of energy dissipation.
Aim.Different from past semi-active friction dampers,ours uses simple control law and is easy to implement;as to the relatively full hysteresis loop,it is as good as the best of past semi-active friction dampers.Section 1 of the full paper explains the calculation model of our semi-active friction damper and its control,which is described with the help of Fig.1(b).Section 2 derives and solves the dynamic equations of a structure with our semi-active friction damper;we point out that eqs.(10) through(13) are the most important.Section 3 gives a numerical example;the results,presented in Figs.3 through 6,and their analysis show preliminarily that:(1) our semi-active friction damper significantly reduces the seismic response of the structure;(2) the displacement and interstorey shear force of the structure are much smaller than the structure that does not have our semi-active friction dampers;(3) the hysteresis loop of our semi-active friction damper is relatively full.All the above implies that our off-on semi-active friction damper has good capability of energy dissipation.
引文
[1]Li HN,Yin Y W,Wang S Y.Studies on Seismic Reduction of Story-Increased Buildings with Friction Layer and Energy-Dissi-pated Devices.Earthquake Engineering and Structural Dynamics,2003,32(14):2143~2160
[2]李宏男,李军.半主动摩擦阻尼器对偏心结构振动控制的仿真研究.哈尔滨工业大学学报,2005,37(10):1360~1363Li Hongnan,Li Jun.Simulation of Vibration Control for Irregular Buildings Using Semi-Active Friction Dampers.Journal ofHarbin Institute of Technology,2005,37(10):1360~1363(in Chinese)
[3]王伟,李庆祥,刘广义.永磁摩擦耗能装置结构体系被动控制试验研究.建筑结构学报,2004,25(2):85~90Wang Wei,Li Qingxiang,Liu Guangyi.Experimental Study on Structural Passive Control of Permanent Magnet Friction EnergyDissipation Device.Journal of Building Structures,2004,25(2):85~90(in Chinese)
[4]杨飏,欧进萍.压电变摩擦阻尼器减振结构的数值分析.振动与冲击,2005,24(6):1~5Yang Yang,Ou Jinping.Numerical Analysis for Piezoelectic Friction Damper Control of Structure Vibration.Journal of Vibra-tion and Shock,2005,24(6):1~5(in Chinese)
[5]赵大海,李宏男.基于T-S型模糊逻辑的半主动摩擦阻尼器对非线性结构的振动控制.工程力学,2007,24(12):65~71Zhao Dahai,Li Hongnan.Vibration Control of Nonlinear Structure by Semi-Active Friction Damper Based on T-S Fuzzy Logic.Engineering Mechanics,2007,24(12):65~71(in Chinese)
[6]谭平,周福霖.新型主动变刚度阻尼器的滑动模态控制及仿真分析.华南地震,2007,27(2):1~10Tan Ping,Zhou Fulin.Sliding Mode Control of a New Active Variable Stiffness System.South China Journal of Seismology,2007,27(2):1~10(in Chinese)
[7]胡卫兵,王骏涛.压电摩擦阻尼隔震结构地震响应及控制分析.振动与冲击,2007,26(2):79~85Hu Weibing,Wang Juntiao.Earthquake Response and Control Analysis of Isolation Structure with Piezoelectric Friction Damp-er.Journal of Vibration and Shock,2007,26(2):79~85(in Chinese)
[2]李宏男,李军.半主动摩擦阻尼器对偏心结构振动控制的仿真研究.哈尔滨工业大学学报,2005,37(10):1360~1363Li Hongnan,Li Jun.Simulation of Vibration Control for Irregular Buildings Using Semi-Active Friction Dampers.Journal ofHarbin Institute of Technology,2005,37(10):1360~1363(in Chinese)
[3]王伟,李庆祥,刘广义.永磁摩擦耗能装置结构体系被动控制试验研究.建筑结构学报,2004,25(2):85~90Wang Wei,Li Qingxiang,Liu Guangyi.Experimental Study on Structural Passive Control of Permanent Magnet Friction EnergyDissipation Device.Journal of Building Structures,2004,25(2):85~90(in Chinese)
[4]杨飏,欧进萍.压电变摩擦阻尼器减振结构的数值分析.振动与冲击,2005,24(6):1~5Yang Yang,Ou Jinping.Numerical Analysis for Piezoelectic Friction Damper Control of Structure Vibration.Journal of Vibra-tion and Shock,2005,24(6):1~5(in Chinese)
[5]赵大海,李宏男.基于T-S型模糊逻辑的半主动摩擦阻尼器对非线性结构的振动控制.工程力学,2007,24(12):65~71Zhao Dahai,Li Hongnan.Vibration Control of Nonlinear Structure by Semi-Active Friction Damper Based on T-S Fuzzy Logic.Engineering Mechanics,2007,24(12):65~71(in Chinese)
[6]谭平,周福霖.新型主动变刚度阻尼器的滑动模态控制及仿真分析.华南地震,2007,27(2):1~10Tan Ping,Zhou Fulin.Sliding Mode Control of a New Active Variable Stiffness System.South China Journal of Seismology,2007,27(2):1~10(in Chinese)
[7]胡卫兵,王骏涛.压电摩擦阻尼隔震结构地震响应及控制分析.振动与冲击,2007,26(2):79~85Hu Weibing,Wang Juntiao.Earthquake Response and Control Analysis of Isolation Structure with Piezoelectric Friction Damp-er.Journal of Vibration and Shock,2007,26(2):79~85(in Chinese)
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