随机地震动作用下的结构振动控制试验设计
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摘要
研究了随机地震动作用下基于MR阻尼器的结构振动控制振动台试验设计的若干问题。首先,由原型结构按动力相似关系进行了模型结构的设计,基于ANSYS模态分析的结果识别出了其结构参数;其次,基于物理随机地震动模型生成了试验地震动样本,根据试验要求调整了各地震动样本的加速度峰值;然后,基于MATLAB对试验模型进行了随机地震动作用下无控与主动控制数值仿真分析;最后,结合ANSYS弹塑性动力时程分析,研究了试验模型的动力稳定性。介绍的振动控制试验设计方法可供进行类似试验设计的研究人员参考。
Some problems in experimental design of MR damper-based structural vibration control subject to random earthquake ground motions were investigated.First of all,the design of test model was conducted based on prototype structure according to dynamic similarity law,and structure parameters of the test model were identified based on results of model analysis using ANSYS;Secondly,ground motion time histories were generated according to the stochastic ground motion model,and peak values of accelerations of the ground motions are adjusted;Then,numerical simulation analysis of the test model without control and with active control subject to random ground motions was carried out with MATLAB;Finally,dynamic stability of the test model was considered through ANSYS elastoplastic transient dynamic analysis.The design method of vibration control tests presented in this paper could be taken as reference to researchers.
Some problems in experimental design of MR damper-based structural vibration control subject to random earthquake ground motions were investigated.First of all,the design of test model was conducted based on prototype structure according to dynamic similarity law,and structure parameters of the test model were identified based on results of model analysis using ANSYS;Secondly,ground motion time histories were generated according to the stochastic ground motion model,and peak values of accelerations of the ground motions are adjusted;Then,numerical simulation analysis of the test model without control and with active control subject to random ground motions was carried out with MATLAB;Finally,dynamic stability of the test model was considered through ANSYS elastoplastic transient dynamic analysis.The design method of vibration control tests presented in this paper could be taken as reference to researchers.
引文
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[16]郭海山,沈世钊.单层网壳结构动力稳定性分析方法[J].建筑结构学报,2003,24(3):1-9,49.GUO Haishan,SHEN Shizhao.Analysis method of dynamic stability of single-layer reticulated domes[J].Journal of Building Structures,2003,24(3):1-9,49.
[2]Clough R W,Tang D T.Earthquake simulator study of a steel frame structure,Vol.I:Experimental results[R].EERC Report,75/06.
[3]Tang D T.Earthquake simulator study of a steel frame structure,Vol.II:Analytical results[R].EERC Report,75/36.
[4]Chung L L,Lin R C,Soong T T,et al.Experiments on active control for MDOF seismic structures[J].Journal of Engineering Mechanics,1989,115(8):1609-1627.
[5]Dyke S J,Spencer Jr.B F,Quast P,et al.Implementation of an active mass driver using acceleration feedback control[J].Microcomputers in civil engineering,1996,11(5):305-323.
[6]Spencer Jr.B F,Dyke S J,Deoskar H S.Benchmark problems in structural control:part I—Active Mass Driver system[J].Earthquake engineer-ing&Structural Dynamics,1998,27(11):1127-1139.
[7]Spencer Jr.B F,Dyke S J,Deoskar H S.Benchmark problems in structural control:part II-active tendon system[J].Earthquake engineering&Structural Dynamics,1998,27(11):1141-1147.
[8]李忠献,姜南,徐龙河,等.不同控制策略下安装磁流变阻尼器的模型结构振动台试验与分析[J].建筑结构学报,2004,25(6):15-21.LI Zhongxian,JIANG Nan,XU Longhe,et al.Shaking table test and analysis of model structure installed magnetorheological damper under differ-ent control strategies[J].Journal of Building Structures,2004,25(6):15-21.
[9]吕明云,武哲,瞿伟廉.屋盖MRD隔震升船机结构模型振动台试验[J].北京航空航天大学学报,2005,31(3):288-292.LU Mingyun,WU Zhe,QU Weilian.Shaking table test on ship lifts model with roof MR damper isolation system[J].Journal of Beijing University of Aeronautics and Astronautics,2005,31(3):288-292.
[10]李秀领,李宏男.框-剪偏心结构平-扭耦联反应半主动控制试验研究[J].大连理工大学学报,2008,48(5):691-697.LI Xiuling,LI Hongnan.Experimental study of semi-active control of coupled translation and torsion response for frame-shear wall eccentric structure[J].Journal of Dalian University of Technology,2008,48(5):691-697.
[11]赵大海.基于压电摩擦阻尼器的结构振动控制理论与试验研究[D].大连:大连理工大学,2008.ZHAO Dahai.Theoretical and experimental investigations of structure control based on piezoelectric friction damper[D].Dalian:Dalian University of Technology,2008.
[12]李杰,艾晓秋.基于物理的随机地震动模型研究[J].地震工程与工程振动,2006,26(5):21-26.LI Jie,AI Xiaoqiu.Study on random model of earthquake ground motion based on physical process[J].Earthquake engineering and engineering vi-bration,2006,26(5):21-26.
[13]艾晓秋,李杰.基于随机Fourier谱的地震动合成研究[J].地震工程与工程振动,2009,29(2):7-12.AI Xiaoqiu,LI Jie.Synthesis method of non-stationary ground motion based on random Fourier spectra[J].Earthquake engineering and engineer-ing vibration,2009,29(2):7-12.
[14]李杰,李国强.地震工程学导论[M].北京:地震出版社,1992.LI Jie,LI Guoqiang.Introduction to earthquake engineering[M].Beijing:Earthquake Press,1992.
[15]欧进萍.结构振动控制——主动、半主动和智能控制[M].北京:科学出版社,2003.OU Jinping.Structural vibration control--active,semi-active and intelligent control[M].Beijing:Science Press,2003.
[16]郭海山,沈世钊.单层网壳结构动力稳定性分析方法[J].建筑结构学报,2003,24(3):1-9,49.GUO Haishan,SHEN Shizhao.Analysis method of dynamic stability of single-layer reticulated domes[J].Journal of Building Structures,2003,24(3):1-9,49.
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