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本文将线性系统随机地震反应的时域模态分析技术与非线性土结构概率平均等价线性化法相结合,构造了一种计算水平成层地基土层非平稳随机地震反应的近似算法。对同一计算实例,同时进行了平稳输入平稳输出、平稳输入非平稳输出、非平稳输入非平稳输出三种不同的计算,检验了输入输出非平稳效应的影响,给出了有关的结论。
In this paper, the time domain modal analysis technique of random seismic response of linear system is combined with the probability average equivalent linearization method of nonlinear soil structure to construct an approximate algorithm for calculating the non-stationary random seismic response of horizontal layered soil. For the same calculation example, three different calculations were performed: smooth input smooth output, smooth input non-stationary output, and non-stationary input non-stationary output. The effects of input and output non-stationary effects were examined, and relevant conclusions were given.