基于小波分析的线性结构随机响应求解

简单回顾了结构随机响应求解的发展 ,利用由小波分析估计的地震地面运动局部谱密度 ,采用演变随机过程理论 ,通过数值积分 ,得到了两个线性结构对两个非平稳激励过程响应的局部谱密度 ,经与用地震波样本进行时程分析得到的响应均方时程比较 ,证明精度较高 ,为进行结构动力可靠度的估计提供了可能。

Solutions for the Random Response of Linear Structures Based on Wavelet Transform

In this paper, the development of solutions for structural random response is generally reviewed. The local spectra of ground motions estimated on basis of wavelet transform with application of evolutionary random process theory are adopted to calculate the local spectra of non-stationary responses of two linear structures by numerical integral. By the comparison of the results and those obtained by time-history analysis with earthquake wave samples, the proposed method proved to be highly precise and paved the way for the dynamic reliability estimation.