We conducted a centrifugal model test to investigate the deformation and failure mode of a geogrid-reinforced and pile-supported (GRPS) embankment. The embankment filling was simulated using the incremental acceleration method, and the surcharge was subsequently applied using an inflatable airbag on the embankment. By installing different types of instruments, the displacement of the soil, the axial force and bending moment of the piles, and the earth pressure and pore water pressure of the foundation were monitored. The test results revealed that the embankment tended to slide in a circular-arc manner from shallow to deep, and the stress distribution of the piles varied with the locations. The stress concentration ratio of the embankment was higher, which indicates a more efficient load transmission. Additionally, the excess pore water pressure in the GRPS embankment was lower compared with that in conventional piled embankments.

我们进行了离心模型测试，以研究土工格栅加筋桩支撑路堤的变形和破坏模式。使用增量加速方法模拟路堤填充，然后使用可充气安全气囊在路堤上施加附加费。通过安装不同类型的仪器，可以监测土壤的位移，桩的轴向力和弯矩以及基础的土压力和孔隙水压力。试验结果表明，路堤呈圆弧形由浅向深滑动，桩体的应力分布随位置的变化而变化。路堤的应力集中率较高，表明荷载传递效率更高。另外，