高层建筑中强震仪的优化布置
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摘要
研究了强震仪在高层建筑中的优化布置问题。通过振型矩阵的QR分解获得强震仪的初始配置,以振型模态置信度(MAC)矩阵为目标函数,利用自编的程序进行优化分析,得到了强震仪的优化布置,对传统的经验方法的完善和提高具有重要意义。
Optimal placement of accelerographs in a high-rise building is the best way to know the real structural performance during earthquakes.The initial installing positions are obtained using QR decomposing the modal matrix,and then the optimal analysis for distributing accelerographs is done by adopting off-diagonal elements of the MAC matrix as the objective function.The numerical example results indicate that the proposed method is reliable and effective.
Optimal placement of accelerographs in a high-rise building is the best way to know the real structural performance during earthquakes.The initial installing positions are obtained using QR decomposing the modal matrix,and then the optimal analysis for distributing accelerographs is done by adopting off-diagonal elements of the MAC matrix as the objective function.The numerical example results indicate that the proposed method is reliable and effective.
引文
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[14]Kirkegard P H,Brincker R.On the optimal location of sensorparametric identification of linear structure systems[J].Mechsystems signal processing,1994,8:639—647.
[15]Penny J E T,Friswell ML,Garvey S D.Automatic choice ofmeasurement location for dynamic testing[J].AIAA,1994,2(2):407—414.
[16]Breitfeld T.A method for identification of a set of optimalpoints for experimental modal analysis[J].The InternationalJournal of Analytical and Experimental Modal analysis,1996,11:254—273.
[17]刘福强,张令弥.作动器/传感器优化配置的研究进展[J].力学进展,2000,30(4):11—25.
[2]周雍年.强震观测的发展趋势与任务[J].世界地震工程,2001(12):19—26.
[3]Larson C B,Zimmerman D C,Marek E L,Acomparison of mo-dal planning techniques excitation and sensor placement usingthe NASA8-bay truss[C].Allemang R ed.Proceedings ofthe 12thIMAC conference.1994:205—211.
[4]Kammer D C,Sensor placement for on-orbit modal identifica-tion and correlation of large space structures[J].Journal ofGuidance,Control,Dynamic,1991,14(2):251—259.
[5]Guyan R J.Reduction of stiffness and mass matrices[J].AIAA Journal,1965,3(2):380.
[6]李戈,秦权,董聪.利用遗传算法选择悬索桥监测系统中传感器的最优布点[J].工程力学,2000,17(1):25—34.
[7]刘娟,黄维平.模态试验中传感器优化配置的逐步削减法[J].海洋工程,2004,22(1):32—36.
[8]刘娟,黄维平.二重结构编码遗传算法在传感器配置中的应用[J].振动、测试与诊断,2004,24(4):282.
[9]Park Y S,Kim HB.Sensor placement guide for model com-parison and improvement[C].Proceedings of the 14th Inter-national Modal Analysis Conference,1996:404—409.
[10]Penny J E T,et al,The Automatic Choice of MeasurementLocations for Dynamic Testing[A].Proceedings of the 10thInternational Modal Analysis Conference.Union CollegePress,Schenectady,NY,1992.
[11]崔飞,等.传感器优化布设在桥梁健康检测中的应用[J].同济大学学报,1999,27(2).
[12]Mehmet Celebi.Seismic Instrumentation of Buildings[J].Open-file Report 2000,2000:15—17.
[13]王飞.结构地震反应观测台阵布设方法的研究[D]:[硕士学位论文].北京:中国地震局地震预测研究所,2006.
[14]Kirkegard P H,Brincker R.On the optimal location of sensorparametric identification of linear structure systems[J].Mechsystems signal processing,1994,8:639—647.
[15]Penny J E T,Friswell ML,Garvey S D.Automatic choice ofmeasurement location for dynamic testing[J].AIAA,1994,2(2):407—414.
[16]Breitfeld T.A method for identification of a set of optimalpoints for experimental modal analysis[J].The InternationalJournal of Analytical and Experimental Modal analysis,1996,11:254—273.
[17]刘福强,张令弥.作动器/传感器优化配置的研究进展[J].力学进展,2000,30(4):11—25.
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