Abstract This study proposes a procedure for predicting the required tensile strength of geosynthetics for three-dimensional (3D) geosynthetic-reinforced soil structures (GRSSs) comprised of cohesive backfills subjected to earthquake loadings. This procedure is undertaken using the kinematic approach of limit analysis together with a pseudo-dynamic approach. The influence of cracks is incorporated into the analysis by using a 3D horn-like failure mechanism that includes a vertical crack to characterize the collapse of GRSSs. Two different forms of cracks are considered: cracks forming prior to the collapse of GRSSs (open cracks) and cracks forming simultaneously with the collapse (formation cracks). Based on the work-energy balance equation, the amount of reinforcements needed to maintain the stability of GRSSs is determined. The results of this paper show that the required reinforcements significantly decrease when soil cohesion and 3D effects are considered, whereas accounting for the existence of cracks and seismic forces has an opposite effect.

中文翻译：

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具有裂缝的粘性回填土中 3D 土工合成材料加筋土结构的地震分析

摘要 本研究提出了一种程序，用于预测由承受地震荷载的粘性回填土组成的三维 (3D) 土工合成材料加固土壤结构 (GRSS) 所需的土工合成材料抗拉强度。该过程是使用极限分析的运动学方法和伪动力学方法进行的。通过使用 3D 喇叭状失效机制（包括垂直裂缝来表征 GRSS 的倒塌），将裂缝的影响纳入分析。考虑了两种不同形式的裂缝：在 GRSS 坍塌之前形成的裂缝（开放裂缝）和与坍塌同时形成的裂缝（地层裂缝）。根据功-能平衡方程，确定维持 GRSS 稳定性所需的钢筋数量。