【摘要】 分析了人造地震波的特点与现状 ,给出了地震动频率非平稳特性的简化描述方法与统计规律 ,采用 ARMA模型研究了拟合反应谱的人造地震波合成方法 ,并通过算例对该方法进行了验证。更多还原

【Abstract】 The distinctive feature and status in quo of artificial ground motions is analyzed in this paper, which set forth a simplified method to describe the non stationary frequencies of earthquake ground motions and statistical laws. A method on synthesis of spectrum-compatible accelerograms using ARMA models considering the earthquake non-stationary frequencies is introduced and it proved to be feasible by the analysis of an example.更多还原