This deep excavation tutorial shows the modeling process of a 26-meter excavation using the COMSOL Multiphysics Geomechanics Module. A parametric sweep is used to simulate the excavation steps in the soil, and a Drucker-Prager criterion is used for studying the soil plasticity. Using the Solid Mechanics interface, the interactions between the soil and the retaining wall are calculated and the results are shown. The results consist of two 2D plots: the deformation of the soil and retaining wall, and the plastic deformation. Additionally, two 1D plots show the wall deflection and surface settlement.
深基坑开挖教程演示使用 COMSOL Multiphysics 的“岩土力学模块”对深达 26 m 的开挖作业进行的建模过程。其中使用参数化扫描模拟土方开挖步骤，采用德鲁克-普拉格准则研究土壤塑性。本例使用“固体力学”接口计算土壤与挡土墙的相互作用，并显示了计算结果，其中包含两个二维绘图：土壤与挡土墙的变形以及塑性变形。此外，还生成两个一维绘图，用于显示墙体挠曲和地表沉降。
