等效力控制方法在连梁阻尼器拟动力子结构试验中的应用
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摘要
等效力控制方法用反馈控制求解拟动力试验隐式逐步积分方法的非线性方程,避免了复杂耗时的迭代过程。应用等效力控制方法完成了以连梁阻尼器为试件的拟动力子结构试验,检验了其对双肢剪力墙结构的减震效果。介绍了等效力控制方法原理和一些关键参数的选取方法,介绍了装有连梁阻尼器的双肢剪力墙结构模型,并对此结构模型进行了拟动力子结构试验。研究结果表明:通过合理选取等效力控制器参数和力-位移转换系数,等效力控制方法具有很好的稳定性和精度;连梁阻尼器对双肢剪力墙结构反应有很好的控制效果。
In the equivalent force control method(EFCM),feedback control strategy was made in use,instead of the time-consuming numerical iteration,to solve the nonlinear equations of motion for real-time substructure testing with implicit integration method.The EFCM was suceessfully applied in the pseudo-dynamic substructure tests of coupled shear wall structure,taking coupling beam damper as test specimen in order to investigate its effect on the seismic performance of the structure.The EFCM and the determination of some key parameters in EFC were introduced,and the simplified model and pseudo-dynamic tests of the coupled shear wall structure with coupling beam damper were presented.It is shown that the EFCM can achieve excellent performance in terms of stability and accuracy if the equivalent force controller and force-displacement conversion factor were properly designed,and the coupling beam damper can effectively control the seismic response of the coupled shear wall structure.
In the equivalent force control method(EFCM),feedback control strategy was made in use,instead of the time-consuming numerical iteration,to solve the nonlinear equations of motion for real-time substructure testing with implicit integration method.The EFCM was suceessfully applied in the pseudo-dynamic substructure tests of coupled shear wall structure,taking coupling beam damper as test specimen in order to investigate its effect on the seismic performance of the structure.The EFCM and the determination of some key parameters in EFC were introduced,and the simplified model and pseudo-dynamic tests of the coupled shear wall structure with coupling beam damper were presented.It is shown that the EFCM can achieve excellent performance in terms of stability and accuracy if the equivalent force controller and force-displacement conversion factor were properly designed,and the coupling beam damper can effectively control the seismic response of the coupled shear wall structure.
引文
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[3]蔡新江,田石柱,王大鹏,等.FRP加固桥梁RC短柱拟静力及网络拟动力试验[J].建筑结构学报,2009,30(2):125-135.
[4]范云蕾,肖岩,郭玉荣,等.多层框架结构远程协同拟动力试验方法研究[J].湖南大学学报(自然科学版),2009,36(4):19-23.
[5]邱法维,潘鹏,钱稼茹,等.建筑结构拟动力实验软件的开发与应用[J].建筑结构学报,2000,21(5):22-32.
[6]王焕定,陈再现,王凤来,等.高阶单步拟动力试验算法[J].工程力学,2008,25(11):14-19,26.
[7]Wu B,Wang Q,Shing P B,et al.Equivalent force controlmethod for generalized real-time substructure testing withImplicit Integration[J].Earthquake Engineering andStructural Dynamics,2007,36:1127-1149.
[8]许国山,吴斌.弹性试件的实时子结构试验等效力控制方法[J].振动与冲击,2010,29(5):101-105.
[9]许国山.实时子结构试验的等效力控制方法[D].哈尔滨:哈尔滨工业大学,2010:18-75.
[10]许国山,吴斌.采用比例-积分控制的实时子结构试验等效力控制方法[J].工程力学,2009,26(9):251-256.
[11]许国山,吴斌.采用等效力控制方法的非线性结构实时子结构试验[J].振动工程学报.2010,23(3):119-124.
[12]Wu B,Xu G,Shing P B.Equivalent force control method forreal-time testing of nonlinear structures[J].Journal ofEarthquake Engineering,2011,15(1):143-146.
[13]许国山,吴斌.等效力控制方法在拟动力试验中的应用[J].地震工程与工程振动,2010,30(2):79-85.
[14]滕军,马伯涛,周正根,等.提高连肢墙抗震性能的连梁耗能构件关键技术[J].工程抗震与加固改造,2007,29(5):1-6.
[15]滕军,马伯涛,李卫华,等.联肢剪力墙连梁阻尼器的实验研究与仿真分析[C].第十二届高层建筑抗震技术交流会论文集,北京,2009,10:562-569.
[16]滕军.结构振动控制的理论、技术和方法[M].北京:科学出版社,2009.
[17]王倩颖.实时子结构试验方法及其应用[D].哈尔滨:哈尔滨工业大学,2007:13-38.
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