【摘要】 该文应用小波变换方法对受到地震荷载作用的线性单自由度体系的瞬时均方根响应进行估计,应用小波方法分析地震激励的时频特性,在小波域内求解了地震激励下结构响应的瞬时功率谱密度函数,并且基于此估计了结构的瞬时均方根响应。该文对一单自由度结构进行数值模拟研究,结果表明:小波分析方法具有很好的精度。更多还原

【Abstract】 This paper presents a wavelet-based approach for estimating the root-mean-square (RMS) response of a linear single-degree-of-freedom (SDOF) system under earthquake ground motions.The time-frequency characteristics of the ground motion are analyzed using the wavelet method.The instantaneous power spectral density function (PSDF) of the response has been derived and used to estimate the instantaneous RMS response of the system.Numerical study of a single-degree-of-freedom (SDOF) system is performed.The result shows that the wavelet method can estimate the structural instantaneous RMS responses accurately.更多还原