Abstract In this study, three-dimensional numerical analyses were carried out to investigate the effects of reinforcement pullout resistance including facing connection strength on the behavior of geosynthetic-reinforced soil (GRS) piers under a service load condition. Three different piers were investigated in this study, which simulated different levels of reinforcement pullout resistance. Each pier had two cases with different reinforcement stiffness J and reinforcement spacing Sv but the same ratio of J/Sv. Numerical results showed that reinforcement pullout resistance had a significant effect on the behavior of GRS piers. When the pullout mode prevailed, the case with small Sv and low J had smaller lateral facing displacements and vertical strain of the pier under the same applied pressure as compared to the case with large Sv and high J when the ratio of J/Sv was kept constant. When the pullout mode did not prevail, two cases with the same ratio of J/Sv showed similar performance despite different combinations of Sv and J were used. To more effectively mobilize reinforcement strength and improve GRS pier performance, small reinforcement spacing or high-strength facing connection should be considered when sufficient reinforcement pullout resistance cannot be guaranteed otherwise.

中文翻译：

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加筋抗拔力对土工合成材料加筋土（GRS）桥墩性能影响的数值研究

摘要 在本研究中，通过三维数值分析研究了包括面板连接强度在内的钢筋抗拔力对土工合成材料加筋土（GRS）桥墩在使用荷载条件下的行为的影响。在这项研究中研究了三个不同的桥墩，模拟了不同水平的钢筋拔出阻力。每个桥墩有两种情况，其配筋刚度 J 和配筋间距 Sv 不同，但 J/Sv 的比率相同。数值结果表明，钢筋拔出阻力对GRS桥墩的性能有显着影响。当拉出模式盛行时，当 J/Sv 的比值保持恒定时，与大 Sv 和高 J 的情况相比，在相同的施加压力下，小 Sv 和低 J 的情况下桥墩的侧向位移和竖向应变较小。当拉出模式不占优势时，尽管使用了不同的 Sv 和 J 组合，但具有相同 J/Sv 比率的两种情况表现出相似的性能。为更有效调动钢筋强度，提高GRS桥墩性能，在不能保证足够的钢筋拔出抗力时，应考虑采用小钢筋间距或高强度面连接。