将地震地面运动考虑为随机过程是研究地震随机反应的重要方法,结合随机振动理论和动力分析有限元法,简介了随机地震动模型的,推导了框架结构在平稳随机地震作用下的基本方程。取汶川强震区中实际受损的钢筋混凝土框架结构为算例,运用Ansys建立模型,分析了处于8度区强震作用时在随机地震作用下的响应特性。 Considering the earthquake ground motion as a stochastic process is an important method to study the stochastic response of the earthquake. Based on the stochastic vibration theory and the dynamic analysis finite element method, the basic equations of the frame structure under steady stochastic earthquake are deduced. Taking the actual damaged RC frame structure in the Wenchuan strong earthquake area as an example, Ansys was used to establish a model to analyze the response characteristics under strong earthquakes in the 8th degree zone under stochastic earthquake.