In this study, the seismic input model of slope is proposed to investigate the dynamic response of the rock slope under obliquely incident seismic wave on the basis of the time-domain wave analysis method. The model includes viscoelastic boundary considering the infinite foundation radiation damping and the seismic obliquely incident method. The semi-infinite space numerical example is simulated to verify the validity and accuracy of the model. Based on the established model, the effects of the variation of the seismic wave incident angles and slope angles on the dynamic response of a rock slope are analyzed. The results demonstrate that the changes of the incident angle and the slope angle have no discernible effect on the dynamic response of the rock slope when the P wave is obliquely incident. As the SV wave is obliquely incident, the peak ground acceleration amplification coefficient along the slope surface gradually increases with the increase of the incident angle; when the slope angle gradually increases, the peak ground acceleration amplification coefficient along the slope surface will also gradually increase at the upper part of the slope. The research results can provide some basis for the pseudostatic method to determine the seismic action coefficient.

中文翻译：

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斜入射地震波作用下岩质边坡的动力响应

本文基于时域波分析方法，提出了边坡的地震输入模型，以研究斜坡在倾斜入射地震波作用下的动力响应。该模型包括考虑无限地基辐射阻尼和地震倾斜入射法的粘弹性边界。通过对半无限空间数值例子进行仿真，验证了模型的有效性和准确性。基于建立的模型，分析了地震波入射角和倾斜角变化对岩石边坡动力响应的影响。结果表明，当P波倾斜入射时，入射角和倾斜角的变化对岩石边坡的动力响应没有明显影响。由于SV波是倾斜入射的，沿坡面的地面加速度峰值放大系数随入射角的增加而逐渐增大。当坡度角逐渐增大时，沿坡面的地面加速度峰值放大系数也将在坡度上部逐渐增大。研究结果可为拟静力法确定地震作用系数提供依据。