The paper presents in-depth three-dimensional finite element analyses investigating geosynthetic-reinforced soil walls with turning corners. Validation of the 3D numerical procedure was first performed via comparisons between the simulated and reported results of a benchmark physical modeling built at the Royal Military College of Canada. GRS walls with corners of 90°, 105°, 120°, 135°, 150°, and 180° were simulated adopting the National Concrete Masonry Association guidelines. The behaviors of the GRS walls with corners, including the lateral facing displacement, maximum reinforcement load, factor of safety, potential failure surface, vertical separation of facing blocks, and types of corners were carefully evaluated. Our comprehensive results show (i) minimum lateral displacement occurs at the corner; (ii) lower strength of reinforcements are required at the corner; (iii) higher corner angles lead to lower stability; (iv) potential failure surface forms earlier at the end walls; (v) deeper potential failure surfaces are found at the corners; (vi) larger numbers of vertical separations are found at walls with smaller corner angles. The paper highlighted the salient influence of the corners on the behaviors of GRS walls and indicated that a 3D analysis could reflect the required reinforcement length and the irregular formation of the potential failure surfaces.

本文提出了深入的三维有限元分析，研究了带有转角的土工合成材料加筋的土墙。首先通过加拿大皇家军事学院建立的基准物理模型的仿真结果与报告结果之间的比较，对3D数值程序进行验证。采用国家混凝土砌体协会指南模拟了转角为90°，105°，120°，135°，150°和180°的GRS墙。仔细评估了带有角的GRS墙的性能，包括侧向位移，最大加固载荷，安全系数，潜在破坏面，饰面块的垂直分隔以及角的类型。我们的综合结果显示（i）最小的横向位移发生在拐角处；（ii）在拐角处需要降低强度的钢筋；（iii）较高的转角会导致稳定性降低；（iv）在端壁处较早形成潜在的破坏面；（v）在拐角处发现了更深的潜在破坏面；（vi）在具有较小拐角的墙壁上发现了大量的垂直间隔。该论文强调了拐角对GRS墙体行为的显着影响，并指出3D分析可以反映所需的钢筋长度和潜在破坏面的不规则形成。