Abstract The seismic internal stability of reinforced, convex embankments that are three-dimensional in nature is analyzed. A limit equilibrium based three-dimensional rotational failure mechanism is adopted to calculate the required reinforcement strength to maintain the stability of convex embankments. The results are presented in the form of stability charts and the effects of various parameters on the three-dimensional solution are investigated. The calculation of the required strength and length of reinforcement is demonstrated by two examples using an approach consistent with AASHTO (2012). Comparing the strengths obtained under two and three-dimensional conditions, the results show that the two-dimensional results are more conservative with respect to the strength of reinforcement, but could be unconservative considering the required length of reinforcement, especially for reinforced convex embankments with gentle turning angles. The influence of seismicity causes greater three-dimensional effects when the reinforced convex embankment is vertical, but less so when the slope inclination is gentle.

中文翻译：

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考虑地震荷载的加筋凸起公路路堤内部稳定性分析

摘要 分析了具有三维性质的加筋凸形路堤的地震内稳定性。采用基于极限平衡的三维旋转破坏机制，计算维持凸形路堤稳定性所需的加固强度。结果以稳定性图的形式呈现，并研究了各种参数对三维解的影响。使用与 AASHTO (2012) 一致的方法通过两个例子证明了所需强度和钢筋长度的计算。比较二维和三维条件下获得的强度，结果表明二维结果相对于钢筋强度更保守，但考虑到所需的钢筋长度可能是不保守的，特别是对于具有温和转弯角度的钢筋凸形路堤。地震活动的影响在加筋凸形路堤垂直时产生较大的三维效应，而在坡度平缓时则较小。