Abstract Understanding the stress regime that develops in the vicinity of reinforcements in reinforced soil masses may prove crucial to understanding, quantifying, and modeling the behavior of a reinforced soil structures. This paper presents analyses conducted to describe the evolution of stress and strain fields in a reinforced soil unit cell, which occur as shear stresses are induced at the soil-reinforcement interface. The analyses were carried out based on thorough measurements obtained when conducting soil-reinforcement interaction tests using a new large-scale device developed to specifically assess geosynthetic-reinforced soil behavior considering varying reinforcement vertical spacings. These experiments involved testing a geosynthetic-reinforced mass with three reinforcement layers: an actively tensioned layer and two passively tensioned neighboring layers. Shear stresses from the actively tensioned reinforcement were conveyed to the passively tensioned reinforcement layers through the intermediate soil medium. The experimental measurements considered in the analyses presented herein include tensile strains developed in the reinforcement layers and the displacement field of soil particles adjacent to the reinforcement layers. The analyses provided insights into the lateral confining effect of geosynthetic reinforcements on reinforced soils. It was concluded that the change in the lateral earth pressure increases with increasing reinforcement tensile strain and reinforcement vertical spacing, and it decreases with increasing vertical stress.

中文翻译：

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土壤-加固相互作用：土工合成材料加固土壤中的应力状态演变

摘要 了解在加筋土体中加筋附近产生的应力状态可能对理解、量化和模拟加筋土结构的行为至关重要。本文介绍了为描述加筋土单位单元中应力和应变场的演变而进行的分析，这种演变是在土壤 - 加筋界面处引起剪应力时发生的。这些分析是基于在使用一种新的大型设备进行土壤-钢筋相互作用测试时获得的彻底测量进行的，该设备专门用于评估土工合成材料加筋土的性能，同时考虑到不同的钢筋垂直间距。这些实验包括测试具有三个增强层的土工合成材料增强质量：一个主动张紧层和两个被动张紧相邻层。来自主动张拉钢筋的剪应力通过中间土壤介质传递到被动张拉钢筋层。此处介绍的分析中考虑的实验测量包括在加固层中产生的拉伸应变和与加固层相邻的土壤颗粒的位移场。分析提供了对土工合成材料加筋材料对加筋土的横向约束效果的见解。得出的结论是，侧向土压力的变化随着钢筋拉应变和钢筋竖向间距的增加而增加，随着竖向应力的增加而减小。来自主动张拉钢筋的剪应力通过中间土壤介质传递到被动张拉钢筋层。此处介绍的分析中考虑的实验测量包括在加固层中产生的拉伸应变和与加固层相邻的土壤颗粒的位移场。这些分析提供了对土工合成材料加筋材料对加筋土的横向限制效应的深入了解。得出的结论是，侧向土压力的变化随着钢筋拉应变和钢筋竖向间距的增加而增加，随着竖向应力的增加而减小。来自主动张拉钢筋的剪应力通过中间土壤介质传递到被动张拉钢筋层。此处介绍的分析中考虑的实验测量包括在加固层中产生的拉伸应变和与加固层相邻的土壤颗粒的位移场。分析提供了对土工合成材料加筋材料对加筋土的横向约束效果的见解。得出的结论是，侧向土压力的变化随着钢筋拉应变和钢筋竖向间距的增加而增加，随着竖向应力的增加而减小。此处介绍的分析中考虑的实验测量包括在加固层中产生的拉伸应变和与加固层相邻的土壤颗粒的位移场。这些分析提供了对土工合成材料加筋材料对加筋土的横向限制效应的深入了解。得出的结论是，侧向土压力的变化随着钢筋拉应变和钢筋竖向间距的增加而增加，随着竖向应力的增加而减小。此处介绍的分析中考虑的实验测量包括在加固层中产生的拉伸应变和与加固层相邻的土壤颗粒的位移场。分析提供了对土工合成材料加筋材料对加筋土的横向约束效果的见解。得出的结论是，侧向土压力的变化随着钢筋拉应变和钢筋竖向间距的增加而增加，随着竖向应力的增加而减小。