The geosynthetic-reinforced pile-supported (GRPS) embankment is an effective method for improving soft ground, widely adopted in engineering applications. In this paper, a concentric ellipsoidal soil arching model was proposed to describe the stress distribution within the GRPS embankment. An analytical solution for soil arching efficacy was derived by solving the loads acting on the pile caps and geosynthetics under piles arranged in a squared pattern. Subsequently, finite difference models were established to verify the accuracy of the derived analytical solution. Meanwhile, four field tests were introduced to validate the analytical model. Finally, parametric studies were conducted on the concentric ellipsoidal soil arching model, considering parameters such as the embankment height, the pile spacing, the pile cap width, the unit weight, and the friction angle of fill soil.

中文翻译：

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土工合成材料加筋桩基路堤三维同心椭球土拱解析模型


土工合成材料加筋桩基路堤是改善软土地基的有效方法，在工程应用中得到广泛应用。本文提出了同心椭球土拱模型来描述 GRPS 路堤内的应力分布。通过求解作用在方形排列的桩下的承台和土工合成材料上的荷载，得出了土拱效应的解析解。随后，建立有限差分模型来验证推导解析解的准确性。同时，引入了四次现场测试来验证分析模型。最后，考虑路堤高度、桩距、承台宽度、单位重量、填土摩擦角等参数，对同心椭球土拱模型进行参数化研究。