可控式TMD-混合水箱系统减振控制策略
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摘要
工程振动或计算、施工误差使结构的固有频率发生偏移或使实际的固有频率与设计值出现偏差,导致被动调谐类阻尼器减振效果明显下降.为了改善调谐阻尼器的这种失谐效应,提出了可控式TMD-混合水箱系统(controllable TMD-hybrid tanks system,简称CTHTS)的概念,通过改变系统中挡板的开合状态,以应对结构频率发生偏移.阐述了该系统中各参数的设置方法,导出了调谐液柱阻尼器(TLCD)、调谐液体阻尼器(TLD)以及结构-混合系统(THTS)的运动方程,并通过算例中CTHTS与普通TMD对结构减振效果的比较,证明了CTHTS的优越性和减振策略的有效性.
Excursions of structures' frequencies,result from engineering vibration or discrepancies between structures' actual frequencies and designed ones due to calculation or construction errors,will make the vibration reduction effect of a passive tuned damper drop obviously.In order to improve the detuning effect of a passive tuned damper,a controllable TMD-hybrid tanks system(CTHTS) was proposed.Horizontal baffles in this system are switched to deal with the frequency excursion of a structure.The setting of parameters in the system was discussed,and the motion equations for TLCD(tuned liquid column damper),TLD(tuned liquid damper) and a structure with THTS(TMD-hybrid tanks system) are derived.A numerical example was used to compare the control performance of CTHTS and ordinary TMD(tuned mass damper).The research results show the advantage of the CTHTS and the effectiveness of the strategies.
Excursions of structures' frequencies,result from engineering vibration or discrepancies between structures' actual frequencies and designed ones due to calculation or construction errors,will make the vibration reduction effect of a passive tuned damper drop obviously.In order to improve the detuning effect of a passive tuned damper,a controllable TMD-hybrid tanks system(CTHTS) was proposed.Horizontal baffles in this system are switched to deal with the frequency excursion of a structure.The setting of parameters in the system was discussed,and the motion equations for TLCD(tuned liquid column damper),TLD(tuned liquid damper) and a structure with THTS(TMD-hybrid tanks system) are derived.A numerical example was used to compare the control performance of CTHTS and ordinary TMD(tuned mass damper).The research results show the advantage of the CTHTS and the effectiveness of the strategies.
引文
[1]周福霖.工程结构减震控制[M].北京:地震出版社,1997:211-213.
[2]李春祥,刘艳霞,王肇民,等.高层钢结构地震反应控制的MTLD系统优化设计[J].工程力学,2000,17(2):119-128.LI Chunxiang,LIU Yanxia,WANG Zhaomin,et al.The optimum design of MTLD system for controlling the seismicresponses of tall steel structures[J].Engineering Mechanics,2000,17(2):119-128.
[3]蓝文武.混合水箱装置对高层建筑结构地震反应控制效果的研究[J].世界地震工程,2001,17(2):59-64.LAN Wenwu.Study on the effectiveness of MTLDs in suppressing the earthquake-induced motions in high-rise building[J].World Information on Earthquake Engineering,2001,17(2):59-64.
[4]CHANG Peiming,JACK Y K L,LOREN D L.Model identification and control of a tuned liquid damper[J].EngineeringStructures,1998,20(3):155-163.
[5]熊俊明,梁启智,吴建华.设置竖向挡板的矩形TLD的动力特性[J].华南理工大学学报:自然科学版,2001,29(3):22-25.XIONG Junming,LIANG Qizhi,WU Jianhua.Dynamic characteristics on TLD by using a rectangular tank with a verticalbaffle[J].Journal of South China University of Technology:Natural Science Edition,2001,29(3):22-25.
[6]XU Y L,SAMALI B,KWOK K C S.Control of along-wind response of structures by mass and liquid dampers[J].Journalof Engineering Mechanics,1992,118(1):20-39.
[7]HOUSNER G W.Dynamic pressure on accelerated fluid containers[J].Bulletin of the Seismological of America,1957,47(1):15-35.
[8]李宏男,李忠献.结构振动与控制[M].北京:中国建筑工业出版社,2005:212-214.
[9]HAROUN M A,PIRES J A.Active orifice control in hybrid liquid column dampers[C]∥Proceedings of the First WorldConference on Structural Control.Los Angeles:[s.n.],1994:69-78.
[10]瞿伟廉.高层建筑和高耸结构的风振控制设计[M].武汉:武汉测绘科技大学出版社,1991:91.
[11]李春祥,杜冬.MTMD对结构刚度和质量参数摄动的鲁棒性[J].振动与冲击,2004,23(1):38-40.LI Chunxiang,DUDong.Robustness of MTMD to perturbation in structural stiffness and mass[J].Journal of Vibration andShock,2004,23(1):38-40.
[2]李春祥,刘艳霞,王肇民,等.高层钢结构地震反应控制的MTLD系统优化设计[J].工程力学,2000,17(2):119-128.LI Chunxiang,LIU Yanxia,WANG Zhaomin,et al.The optimum design of MTLD system for controlling the seismicresponses of tall steel structures[J].Engineering Mechanics,2000,17(2):119-128.
[3]蓝文武.混合水箱装置对高层建筑结构地震反应控制效果的研究[J].世界地震工程,2001,17(2):59-64.LAN Wenwu.Study on the effectiveness of MTLDs in suppressing the earthquake-induced motions in high-rise building[J].World Information on Earthquake Engineering,2001,17(2):59-64.
[4]CHANG Peiming,JACK Y K L,LOREN D L.Model identification and control of a tuned liquid damper[J].EngineeringStructures,1998,20(3):155-163.
[5]熊俊明,梁启智,吴建华.设置竖向挡板的矩形TLD的动力特性[J].华南理工大学学报:自然科学版,2001,29(3):22-25.XIONG Junming,LIANG Qizhi,WU Jianhua.Dynamic characteristics on TLD by using a rectangular tank with a verticalbaffle[J].Journal of South China University of Technology:Natural Science Edition,2001,29(3):22-25.
[6]XU Y L,SAMALI B,KWOK K C S.Control of along-wind response of structures by mass and liquid dampers[J].Journalof Engineering Mechanics,1992,118(1):20-39.
[7]HOUSNER G W.Dynamic pressure on accelerated fluid containers[J].Bulletin of the Seismological of America,1957,47(1):15-35.
[8]李宏男,李忠献.结构振动与控制[M].北京:中国建筑工业出版社,2005:212-214.
[9]HAROUN M A,PIRES J A.Active orifice control in hybrid liquid column dampers[C]∥Proceedings of the First WorldConference on Structural Control.Los Angeles:[s.n.],1994:69-78.
[10]瞿伟廉.高层建筑和高耸结构的风振控制设计[M].武汉:武汉测绘科技大学出版社,1991:91.
[11]李春祥,杜冬.MTMD对结构刚度和质量参数摄动的鲁棒性[J].振动与冲击,2004,23(1):38-40.LI Chunxiang,DUDong.Robustness of MTMD to perturbation in structural stiffness and mass[J].Journal of Vibration andShock,2004,23(1):38-40.
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