Geosynthetic-reinforced and pile-supported (GRPS) embankments are increasingly used in recent years to reduce the differential settlement and increase the bearing capacity of the embankments. A new theoretical model is proposed to calculate the tensile force distribution and cross-sectional configuration of the geosynthetic reinforcement used in the Geosynthetic-reinforced and flexible pile-supported GRRPS and Geosynthetic-reinforced and rigid pile-supported GRFPS embankments. The accuracy of the proposed methods is verified by the results from laboratory model tests, centrifuge model tests and theoretical models in the literature. It is found that the tensile forces along the geosynthetic are distributed unevenly both in GRRPS and GRFPS embankments with the maximum and minimum magnitudes located at the edge and centre of the pile cap, respectively. The soil arching effect contributes more to the bearing capacity of the GRPS embankment than the membrane effect. It is found through the analyses of the centrifuge and model tests data that the soil arching effect contributes 65–75% of the total load transfer efficiency.

近年来，越来越多地使用土工合成材料加筋桩基（GRPS）路堤来减少不均匀沉降并提高路堤的承载力。提出了一种新的理论模型来计算拉力土工合成材料加筋柔性桩支撑GRRPS和土工合成材料加筋刚性桩支撑GRFPS路堤中土工合成材料加筋的分布和截面配置。通过实验室模型试验、离心机模型试验和文献中的理论模型的结果验证了所提方法的准确性。研究发现，GRRPS和GRFPS路堤沿土工合成材料的拉力分布不均匀，最大和最小大小分别位于桩帽的边缘和中心。土拱效应对GRPS路堤承载力的贡献大于膜效应。