Abstract In this study, finite element limit analysis (FELA) is employed to investigate the undrained seismic bearing capacity of strip footings placed on two-layered slopes. Upper bound theorem (UB), lower bound theorem (LB) and adaptive meshing technique were used in parametric studies to investigate the effects of various factors on seismic bearing capacity Ncs and failure mechanism, especially the seismic coefficient kh and the shear strength ratio of top layer and bottom layer cu1/cu2. The angle of the slope β, the absolute strength of top layer cu/γB, horizontal offset distance b and the thickness of top layer D are also taken into consideration. Furthermore, the comparisons between present study and previous studies are provided. Detailed design tables are presented to distinguish the failure patterns and estimate the seismic bearing capacity of slopes under different conditions.

中文翻译：

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两层边坡条形基脚不排水抗震承载力

摘要 在本研究中，采用有限元极限分析（FELA）研究了两层边坡上条形基础的不排水抗震承载力。参数化研究采用上界定理（UB）、下界定理（LB）和自适应网格划分技术，研究了各种因素对地震承载力 Ncs 和破坏机制的影响，特别是地震系数 kh 和顶部抗剪强度比。层和底层 cu1/cu2。还考虑了斜率β、顶层绝对强度cu/γB、水平偏移距离b和顶层厚度D。此外，还提供了当前研究与以往研究之间的比较。