调谐液体阻尼器对高层结构抗震性能的影响分析
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摘要
通过SAP2000有限元软件建立了实际框架-核心筒模型,对地震作用下调谐液体阻尼器(TLD)的影响因素进行分析,研究了质量比、频率比以及TLD设置位置对结构减震效果的影响规律。结果表明,在频率比和TLD设置位置一定时,当质量比不大于3%时,减震率随质量比的增大而增大,当质量比大于3%之后,减震率将逐渐减小;在质量比和TLD设置位置一定时,减震率随频率比的增大呈现出类似正态分布的规律,在频率比为0.88左右时,减震率达到最大;在质量比和频率比一定时,将TLD设置在结构正中间位置比放在其他位置时的减震率要高。
A practical frame-corewall structure model was established by SAP2000 finite element software and the influencing factors of tuned liquid damper(TLD) under seismic action were anlayzed.The influence rules of different factors such as mass ratio,frequency ratio,and TLD position on structural damping effects were studied.The result shows that with a confirmed frequency ratio and TLD position,the TLD damping rate increases as the mass ratio increases when the value of mass ratio is no greater than 3%,or the damping rate will gradually decrease.When the mass ratio and TLD position are confirmed,with the increasing of frequency ratio,the changing of damping rate shows a similar way as the normal distribution law,and the damping rate reaches the maximum value when the frequency ratio is about 0.88.When the mass ratio and frequency ratio are constant,the damping rate of TLD placed at an intermediate position is higher than that in other locations.
A practical frame-corewall structure model was established by SAP2000 finite element software and the influencing factors of tuned liquid damper(TLD) under seismic action were anlayzed.The influence rules of different factors such as mass ratio,frequency ratio,and TLD position on structural damping effects were studied.The result shows that with a confirmed frequency ratio and TLD position,the TLD damping rate increases as the mass ratio increases when the value of mass ratio is no greater than 3%,or the damping rate will gradually decrease.When the mass ratio and TLD position are confirmed,with the increasing of frequency ratio,the changing of damping rate shows a similar way as the normal distribution law,and the damping rate reaches the maximum value when the frequency ratio is about 0.88.When the mass ratio and frequency ratio are constant,the damping rate of TLD placed at an intermediate position is higher than that in other locations.
引文
[1]李宏男,闫石,贾连光.水箱减振理论与实验的国内外现状[J].沈阳建筑工程学院学报:自然科学版,1995,11(3):260-267.
[2]李宏男.结构振动控制实践的新进展[J].世界地震工程,1995,11(2):34-39.
[3]梁启智,熊俊明,黄庆辉.调谐液体阻尼器对高层建筑和高耸结构动力反应控制研究综述[J].世界地震工程,2002,18(1):123-128.
[4]李春祥.地震作用下高层建筑TLD控制优化设计[J].建筑结构,2000,30(2):23-26.
[5]北京金土木软件技术有限公司.SAP2000中文版使用指南[M].北京:人民交通出版社,2011.
[6]SUN L M,FUJINO Y,KOGA K.A model of tuned liquid damper for suppressing pitching motions of structures[J].Earthquake Engineering and Structural Dynamics,1995,24(6):625-636.
[7]韩军,李英民,刘立平,等.TLD结构减震控制的数值分析[J].工业建筑,2010,40(4):50-56.
[8]HOUSNER G W.The dynamic behavior of water tanks[J].Bulletin of Seismological society of America,1963,53(2):381-387.
[9]JGJ 3—2010高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2011.
[2]李宏男.结构振动控制实践的新进展[J].世界地震工程,1995,11(2):34-39.
[3]梁启智,熊俊明,黄庆辉.调谐液体阻尼器对高层建筑和高耸结构动力反应控制研究综述[J].世界地震工程,2002,18(1):123-128.
[4]李春祥.地震作用下高层建筑TLD控制优化设计[J].建筑结构,2000,30(2):23-26.
[5]北京金土木软件技术有限公司.SAP2000中文版使用指南[M].北京:人民交通出版社,2011.
[6]SUN L M,FUJINO Y,KOGA K.A model of tuned liquid damper for suppressing pitching motions of structures[J].Earthquake Engineering and Structural Dynamics,1995,24(6):625-636.
[7]韩军,李英民,刘立平,等.TLD结构减震控制的数值分析[J].工业建筑,2010,40(4):50-56.
[8]HOUSNER G W.The dynamic behavior of water tanks[J].Bulletin of Seismological society of America,1963,53(2):381-387.
[9]JGJ 3—2010高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2011.
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