【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。更多还原

【Abstract】 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.更多还原