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本文将地震过程模拟为零均值平稳高斯过程,换算出与7°、8°、9°地震相应的地震加速度功率谱作为基底输入,考虑土料的强非线性特性,用Hardin-Drnevich双曲线模型描述.利用随机振动方法计算了不同地震输入、不同高度、不同土石料共170多个土石坝的随机地震反应,统计给出了三种烈度下的坝内最大加速度反应中值的分布曲线,并将所得结果与确定性分析结果和规范给出的结果进行了比较。
In this paper, the seismic process is modeled as a zero-mean-stationary Gaussian process, and the seismic acceleration power spectrum corresponding to the 7 °, 8 °, 9 ° earthquakes is converted into a base input. Considering the strong nonlinear characteristics of the soil material and the Hardin-Drnevich hyperbola model Description The stochastic seismic response of more than 170 earth-rock dams with different earthquakes, different heights and different earth-rock materials was calculated by stochastic vibration method. The distribution of the maximum acceleration response in dam under three intensities was given The results obtained are compared with the results given by the deterministic analysis and the specifications.