【摘要】 推导水平成层线粘弹性土体中垂直入射的剪切波的水平位移方程,按波动理论在频域内进行了反演分析;把地表测得的地震加速度记录通过Fourier变换,在频域内进行反演计算,求得地层某深度处(或基岩处)的地震加速度;通过Fourier反变换求得结构地震反应分析中所需的地震动。结果表明,在结构地震反应分析中对地震动记录进行反演分析是必要的。更多还原

【Abstract】 The paper firstly formulates the horizontal displacement equation of vertical shear wave in linear visco-elastic soil which is herizontally layered,and makes inversion analysis based on wave theory in the frequency domain. The fourier transform is applied to trans form the earthquake acceleration records measured from the ground surface from the time domain to the frequency domain and the earthquake acceleration records are depicted in the frequency domain, and the earthquake accelerations of any soil layer(or bed rock) below the ground surface are obtained.Then,the inverse Fourier transform is applied to transform the earthquake accelerations from the frequency domain to the time domain,and the earthquake accelerations needed in structure seismic response analysis are obtained.The results indicate that inversion analysis of seismic wave records is necessary in structure seismic response analysis.更多还原