Abstract Dynamic centrifuge model tests and associated analyses are carried out to develop a procedure for simulating the slope failure process during earthquakes and to evaluate the force of a sliding soil mass impacting a structure. This impact force is successfully measured in the dynamic centrifuge model tests using a slope height of 50 m in the prototype scale. The results of a pseudo-static limit equilibrium analysis, assuming a circular failure plane, show that a stability analysis can be an effective tool for evaluating the critical acceleration under which the slope failure starts, although it is not applicable for evaluating the runout distance or the impact force of the sliding soil mass to the structure. Therefore, an attempt is also made in this study to examine the applicability of empirical equations for evaluating the impact force by comparing the evaluated impact force using Hertz’s equation and an empirical equation based on fluid mechanics with the measured ones. The comparison reveals that these simple equations would not be able to estimate the impact force well, even though parameter setting is required for applying the equations. On the other hand, it is also found from a relevant analysis that the material point method (MPM) is an effective tool for simulating the failure behavior of a slope and for evaluating the impact force of a sliding soil mass induced by a slope failure.

中文翻译：

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地震诱发边坡破坏滑动土体冲击力动态离心模型试验及材料点法分析

摘要 进行了动态离心模型试验和相关分析，以开发模拟地震期间边坡破坏过程的程序，并评估滑动土体冲击结构的力。该冲击力在动态离心机模型测试中成功测量，使用原型规模的 50 m 斜坡高度。假设为圆形破坏平面的拟静力极限平衡分析的结果表明，稳定性分析可以成为评估斜坡破坏开始的临界加速度的有效工具，尽管它不适用于评估跳动距离或滑动土体对结构的冲击力。所以，本研究还尝试通过比较使用赫兹方程和基于流体力学的经验方程与实测方程来评估冲击力，来检验经验方程对评估冲击力的适用性。比较表明，即使应用这些方程需要设置参数，这些简单的方程也不能很好地估计冲击力。另一方面，从相关分析中也发现，材料点法（MPM）是模拟边坡破坏行为和评价边坡破坏引起的滑动土体冲击力的有效工具。比较表明，即使应用这些方程需要设置参数，这些简单的方程也不能很好地估计冲击力。另一方面，从相关分析中也发现，材料点法（MPM）是模拟边坡破坏行为和评价边坡破坏引起的滑动土体冲击力的有效工具。比较表明，即使应用这些方程需要设置参数，这些简单的方程也不能很好地估计冲击力。另一方面，从相关分析中也发现，材料点法（MPM）是模拟边坡破坏行为和评价边坡破坏引起的滑动土体冲击力的有效工具。