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首页> 外文期刊>Soil Dynamics and Earthquake Engineering >Prediction of earthquake-induced slope displacements considering 2D topographic amplification and flexible sliding mass
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Prediction of earthquake-induced slope displacements considering 2D topographic amplification and flexible sliding mass

机译：考虑二维地形放大和柔性滑动质量的地震诱发边坡位移预测

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The Newmark approach is commonly used in predicting earthquake-induced displacements as an index of slope stability under seismic loading. However, this method is limited to a rigid block assumption in which the incident wave fails to interact with either the slope geometry or the sliding mass. In reality, ground motions are amplified near the slope crest due to the topographic effect or de-amplified at deep failure planes that consider the overlying deformable sliding mass. Therefore, a series of 2-dimensional (2D) dynamic analyses are performed to characterize this interaction behavior in this study. A general prediction model for slope response that considers both the topographic effect and flexible sliding mass is developed based on peak ground acceleration and mean period of incident ground motions conditioned on the natural period of sliding mass and the slope angle. Consequently, the predicted displacement of the 2D slope under seismic loading is achieved using the proposed prediction model of slope response in conjunction with the previously developed rigid displacement prediction model.
机译：Newmark方法通常用于预测地震引起的位移，作为地震荷载下边坡稳定性的指标。但是，该方法仅限于刚性块假设，在该假设中，入射波无法与斜坡几何形状或滑动质量相互作用。实际上，由于地形效应，地面运动在坡顶附近被放大，或者在考虑了上覆的可变形滑动质量的深破坏平面处被放大。因此，在本研究中，进行了一系列二维（2D）动态分析来表征这种相互作用行为。基于峰值地面加速度和以滑动质量的自然周期和倾斜角为条件的入射地面运动的平均周期，建立了同时考虑地形效应和柔性滑动质量的边坡响应的通用预测模型。因此，结合提出的边坡响应预测模型和先前开发的刚性位移预测模型，可以实现地震荷载作用下二维边坡的预测位移。

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