Soils are inherently anisotropic, which may significantly influence their mechanical behavior and the performance of related geostructures. In this study, the response of strip footing on anisotropic sand was investigated using a J₂-type deformation model coupled with state-dependent dilatancy and fabric evolution. The capability of the model was validated by simulating several element tests and a centrifuge test of strip footing. Footing tests with varying fabric orientations and relative densities were numerically simulated, revealing the influence of fabric anisotropy on the bearing capacity and its mobilization mechanism. Additionally, the effect of fabric on the failure mode of strip footing, including the pattern of the shear band, displacement field within the sand mass, and progressive failure characteristics, was also investigated. The simulation results obtained using an isotropic model indicate that neglecting the fabric anisotropy may cause severe overestimation of the bearing capacity of the strip footing.

土壤本质上是各向异性的，这可能会显着影响其力学行为和相关地质结构的性能。在本研究中，使用J ₂型变形模型与状态相关的剪胀和织物演化相结合。该模型的能力通过模拟几个元素测试和条形基础的离心测试来验证。数值模拟了不同织物方向和相对密度的基脚试验，揭示了织物各向异性对承载力的影响及其动员机制。此外，还研究了织物对条形基础破坏模式的影响，包括剪切带的模式、砂体内的位移场和渐进破坏特征。使用各向同性模型获得的模拟结果表明，忽略织物各向异性可能会导致严重高估条形基础的承载能力。