减隔震装置下渡槽槽-水耦合体动力响应特点研究
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摘要
渡槽主要特点是上部槽内有巨大水体,当地震波沿着横向作用时,上部巨大的水体不但产生大的惯性力,还存在水体晃动影响。在渡槽减隔震研究中,减隔震装置有滤波作用,而目前没有关于槽内水体晃动及其动力响应与减隔震装置滤波效应之间关系的相关研究。本文首先分析了弹性支撑滤波作用下受不同频率简谐波激励的槽-水耦合体振动特点,其次观察了地震激励下渡槽采用不同减隔震装置时横向动力响应,并结合滤波作用下槽-水耦合体振动特点进行成因说明。
A key feature of aqueduct is that if a transversal seismic wave impacts it,a great inertia force and sloshing will be generated by the huge volume of water inside it.A seismic isolation device commonly has filter function.The relationship between the dynamic responses of water-duct coupled components and such a filter function,however,was not studied.This paper presents a study on such dynamic responses under stimulation of sine waves of different circular frequencies.Transversal seismic responses of the coupled components are observed and illustrated,and the filter function is examined.
A key feature of aqueduct is that if a transversal seismic wave impacts it,a great inertia force and sloshing will be generated by the huge volume of water inside it.A seismic isolation device commonly has filter function.The relationship between the dynamic responses of water-duct coupled components and such a filter function,however,was not studied.This paper presents a study on such dynamic responses under stimulation of sine waves of different circular frequencies.Transversal seismic responses of the coupled components are observed and illustrated,and the filter function is examined.
引文
[1]李敏霞,陈厚群,王济,等.渡槽结构隔震耗能减振控制的试验研究[J].地震工程与工程振动,2002,2(4):139～143.LI Minxia,CHEN Houqun,WANG Ji,et al.Experiment study on vibration control of aqueduct bridge using isolation and energydissipation hybrid system[J].Earthquake Engineering and Engineering Vibration,2002,2(4):139～143.(in Chinese)
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[3]张俊发,刘云贺,王克成.铅芯橡胶减震技术在渡槽中的应用研究[J].水利学报,1999,(10):65～69.ZHANG Junfa,LIU Yunhe,WANG Kecheng.Seismic response reduction for aqueduct by using LRB[J].Journal of HydraulicEngineering,1999,10:65～69.(in Chinese)
[4]张俊发,刘云贺,王克成.设置叠层橡胶支座梁式渡槽的地震响应分析[J].水利学报,1999,(1):50～54.ZHANG Junfa,LIU Yunhe,WANG Kecheng.Seismic response analysis of aqueduct bridge with laminated rubber bearing[J].Journalof Hydraulic Engineering,1999,(1):50～54.(in Chinese)
[5]刘云贺,陈厚群.大型渡槽铅销橡胶支座减震机理的数值模拟[J].水利学报,2003,(12):98～103.LIU Yunhe,CHEN Houqun.A seismic effect of lead rubber bearing for large scaled aqueduct[J].Journal of Hydraulic Engineering,2003,12:98～103.(in Chinese)
[6]徐建国,陈淮,王博.渡槽结构非线性隔震研究[J].长江科学院院报,2008,25(02):61～68.XU Jianguo,CHEN Huai,WANG Bo.Nonlinear vibration isolation study of aqueduct structure[J].Journal of Yangtze River ScientificResearch Institute,2008,25(2):61～68.(in Chinese)
[7]中国水利水电科学研究院,中国水电顾问集团昆明勘测设计研究院,中国水电顾问集团西北勘测设计研究院.DL5073-2000水工建筑物抗震设计规范[S].2000.China Institute of Water Resources and Hydropower Research,Hydrochina Kunming Engineering Corporation,Hydrochina XibeiEngineering Corporation.DL 5073-2000 Specification for seismic design of hydraulic structures[S].2000.(in Chinese)
[2]庄中华,李敏霞,陈厚群.渡槽结构隔震与耗能减振控制机理的研究[J].噪声与振动控制,2002,(2):10～12.ZHUANG Zhonghua,LI Minxia,CHEN Houqun.Basic theory on aqueduct bridge vibration control using Isolation and energydissipation hybrid system[J].Noise and Vibration Control.2002,2;10～12.(in Chinese)
[3]张俊发,刘云贺,王克成.铅芯橡胶减震技术在渡槽中的应用研究[J].水利学报,1999,(10):65～69.ZHANG Junfa,LIU Yunhe,WANG Kecheng.Seismic response reduction for aqueduct by using LRB[J].Journal of HydraulicEngineering,1999,10:65～69.(in Chinese)
[4]张俊发,刘云贺,王克成.设置叠层橡胶支座梁式渡槽的地震响应分析[J].水利学报,1999,(1):50～54.ZHANG Junfa,LIU Yunhe,WANG Kecheng.Seismic response analysis of aqueduct bridge with laminated rubber bearing[J].Journalof Hydraulic Engineering,1999,(1):50～54.(in Chinese)
[5]刘云贺,陈厚群.大型渡槽铅销橡胶支座减震机理的数值模拟[J].水利学报,2003,(12):98～103.LIU Yunhe,CHEN Houqun.A seismic effect of lead rubber bearing for large scaled aqueduct[J].Journal of Hydraulic Engineering,2003,12:98～103.(in Chinese)
[6]徐建国,陈淮,王博.渡槽结构非线性隔震研究[J].长江科学院院报,2008,25(02):61～68.XU Jianguo,CHEN Huai,WANG Bo.Nonlinear vibration isolation study of aqueduct structure[J].Journal of Yangtze River ScientificResearch Institute,2008,25(2):61～68.(in Chinese)
[7]中国水利水电科学研究院,中国水电顾问集团昆明勘测设计研究院,中国水电顾问集团西北勘测设计研究院.DL5073-2000水工建筑物抗震设计规范[S].2000.China Institute of Water Resources and Hydropower Research,Hydrochina Kunming Engineering Corporation,Hydrochina XibeiEngineering Corporation.DL 5073-2000 Specification for seismic design of hydraulic structures[S].2000.(in Chinese)
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