Abstract A plasticity-based model is developed under the framework of the slip line theory to estimate the ultimate bearing capacity of a skirted strip foundation resting on cohesionless soil under both static and seismic conditions. The analysis is performed considering a both-side failure mechanism beneath the foundation. The bearing capacity is eventually derived by satisfying the force equilibrium of the soil wedge trapped between the skirts. A pseudo-static analysis is performed to encompass the effect of an earthquake in the present analysis. The enhancement in the bearing capacity of a skirted foundation compared to a conventional surface foundation is demonstrated with a comprehensive parametric study. The obtained results are found to be lesser than that obtained through the upper bound solution reported in the literature but closer to the available experimental studies. Reduction in the bearing capacity of a skirted foundation during any seismic event is found to be lesser due to the presence of the skirts.

中文翻译：

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基于滑移线理论的无粘性土裙边基础极限承载力

摘要 在滑移线理论的框架下，建立了一个基于塑性的模型，以估计静力和地震条件下搁置在无粘性土上的带裙边条形地基的极限承载力。进行分析时考虑了地基下的双侧破坏机制。承载力最终是通过满足夹在裙边之间的土楔的力平衡得出的。执行拟静力分析以包含当前分析中的地震影响。与传统表面基础相比，裙边基础承载能力的增强通过全面的参数研究得到证实。发现获得的结果小于通过文献中报道的上限解获得的结果，但更接近可用的实验研究。由于裙边的存在，发现在任何地震事件期间裙边基础的承载能力的降低较小。