本文在总结现有计算土层平稳随机地震反应等价线性化法的基础之上,提出了新的概率平均等价线性化法,以单层土、单自由度水平剪切振动系统为例,用Monte-Carlo数值模拟法对本文方法及其它方法进行了统计检验。结果表明,概率平均法概念明确,精度较其它方法更高,计算也不复杂,是一种较好的方法。 In this paper, on the basis of summarizing the equivalent linearization method for stable stochastic earthquake response in soils, a new probabilistic average equivalent linearization method is proposed, taking single-layer soil and single-degree-of-freedom horizontal shear vibration systems as examples. Monte-Carlo numerical simulation method was used to statistically test the method and other methods. The results show that the concept of probability average is clear, accuracy is higher than other methods, and calculation is not complicated. It is a better method.