Abstract In this study, the undrained stability of eccentrically loaded strip footing lying on two-layered slopes was investigated by self-developed adaptive finite element limit analysis (AFELA) code. Upper bound (UB) and lower bound (LB) results of bearing capacity factors Nc within 5% relative error were obtained to quantify the effects of several factors, including the strength ratio, the undrained shear stress ratio, the thickness of the top layer, the slope angle, the edge distance, the load eccentricity, and especially the different load eccentricity was analyzed. Typical failure patterns were also discussed for deeper insight into the footing-slope system. Meanwhile, the results from AFELA code were compared with previous studies to verify the reliability of this investigation.

中文翻译：

---

层状边坡偏载条形基础不排水稳定性有限元分析

摘要 本研究采用自主开发的自适应有限元极限分析（AFELA）程序研究了位于两层边坡上的偏载条形基础的不排水稳定性。得到承载力因子 Nc 在 5% 相对误差范围内的上界 (UB) 和下界 (LB) 结果，量化了几个因素的影响，包括强度比、不排水剪应力比、顶层厚度、对坡度角、边距、载荷偏心，特别是不同载荷偏心进行了分析。还讨论了典型的故障模式，以便更深入地了解基脚-坡度系统。同时，将 AFELA 代码的结果与以往的研究进行比较，以验证本次调查的可靠性。