Abstract Many soil-structure interaction systems experience a three-dimensional loading condition (i.e. shear coupling) at their interfaces. In this study, an elasto-plastic constitutive formulation for interfaces in soil-structure interaction problems is proposed considering the effects of 3D shear coupling loading conditions. The proposed model is capable of simulating granular soil-structure interfaces for both monotonic and cyclic loading over a wide range of normal stress and normal stiffness using a single set of eleven calibration parameters. The model is capable of simulating a number of complex interface behaviour, including hardening and softening, compaction, dilation and phase transformation, stress path dependency, accumulative contraction and stabilization, stress degradation and particle breakage under monotonic and cyclic loading. The constitutive model performance is examined using available experimental data for gravelly and sandy soil-structure interfaces subjected to monotonic and cyclic loads involving shear coupling.

中文翻译：

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土-结构界面循环行为的三维本构模型

摘要 许多土-结构相互作用系统在其界面处经历了三维载荷条件（即剪切耦合）。在这项研究中，考虑到 3D 剪切耦合载荷条件的影响，提出了土 - 结构相互作用问题中界面的弹塑性本构公式。所提出的模型能够使用一组包含 11 个校准参数的单调和循环载荷模拟颗粒土 - 结构界面，在广泛的法向应力和法向刚度范围内。该模型能够模拟许多复杂的界面行为，包括在单调和循环载荷下的硬化和软化、压实、膨胀和相变、应力路径依赖性、累积收缩和稳定、应力退化和颗粒破裂。