隔震结构动力特性脉动测试与分析
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摘要
利用环境脉动作为激励振源,测试了一叠层橡胶支座隔震结构的脉动响应信号,并利用工程振动反演理论分析得到了该结构的固有频率、振型、阻尼比等动力特性。将其与理论计算结果进行了比较分析,可以认为,用脉动法获得的是隔震结构发生微小变形时的动力特性,为今后进行隔震结构的设计提供了参考。
This paper presents the method to test the pulsing response signal of the laminated rubber bearing seismically isolated structure by using external stimulation as the vibration source.The dynamic characters of predominant frequency,vibration mode,damping ratio etc.of the structure can be derived based on Vibration Reverse Theory.Compared with the result of the theoretical calculation,such conclusion,that pulsing test can be adopted to acquire the dynamic characteristic of the seismically isolated structure in small deformation,can be inferred.This thesis can also furnish a reference to the design of seismically isolated structure in the future.
This paper presents the method to test the pulsing response signal of the laminated rubber bearing seismically isolated structure by using external stimulation as the vibration source.The dynamic characters of predominant frequency,vibration mode,damping ratio etc.of the structure can be derived based on Vibration Reverse Theory.Compared with the result of the theoretical calculation,such conclusion,that pulsing test can be adopted to acquire the dynamic characteristic of the seismically isolated structure in small deformation,can be inferred.This thesis can also furnish a reference to the design of seismically isolated structure in the future.
引文
1周锡元,吴育才.工程抗震的新发展.清华大学出版社、暨南大学出版社,2002:30-45
2 Housner G W,Bergman L A,Caughey T K,et al.StructuralControl:Past,present,and future.J.Engrg.Mech.ASCE,1997,123(9):687-971
3周锡元,阎维明,杨润林.建筑结构的隔震、减振和振动控制.建筑结构学报,2002,23(2):2-12
4徐建.建筑振动工程手册.北京:中国建筑工业出版社,2002:699-715
5周明华.土木工程结构试验与监测.南京:东南大学出版社,2002:136-143
6周福霖.工程结构减震控制.北京:地震出版社,1997:59-61
2 Housner G W,Bergman L A,Caughey T K,et al.StructuralControl:Past,present,and future.J.Engrg.Mech.ASCE,1997,123(9):687-971
3周锡元,阎维明,杨润林.建筑结构的隔震、减振和振动控制.建筑结构学报,2002,23(2):2-12
4徐建.建筑振动工程手册.北京:中国建筑工业出版社,2002:699-715
5周明华.土木工程结构试验与监测.南京:东南大学出版社,2002:136-143
6周福霖.工程结构减震控制.北京:地震出版社,1997:59-61
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