Floating geogrid-reinforced piles provide economic solutions when constructing embankments over areas with soft soil. The combination of piles and geogrids allows for the transfer of stress between the piles and adjacent soil through soil arching and tensioned membrane effects. Furthermore, floating geogrid-reinforced pile foundations can also significantly reduce embankment settlement. However, it has been found that in many cases, the ends of the piles may not be anchored due to layers of thick softened soil. Therefore, reduced scale model tests and numerical simulations were conducted in the current study for the purpose of evaluating the performances of different types of end-bearing and floating piles. The effects of different parameters were considered, including embankment filling heights; pile spacing ratios; stiffness ratios between the piles and the adjacent subsoil; internal friction angles of the embankment fill; and the effects of the tensile stiffness of the geogrids on the bearing capacities of the embankments. The results showed that the absence of firmly supported layers could transfer loads and reduce settlement. The results of this study’s numerical simulations revealed that enlarging the pile-soil stiffness ratios or tensile stiffness, and improving the shear properties of embankment fill could successfully improve the performances of geogrid-reinforced pile-supported embankments. This study’s findings can potentially be used to guide future analyses of floating pile load transfer mechanisms and settlement patterns.

浮动土工格栅加固桩在软土地基上建造路堤时可提供经济的解决方案。桩和土工格栅的组合允许通过土拱和张紧的膜效应在桩和邻近土壤之间传递应力。此外，浮动土工格栅加固的桩基还可以显着减少路堤的沉降。然而，已经发现，在许多情况下，桩的端部可能由于较厚的软化土层而无法锚固。因此，在当前的研究中，进行了缩小比例的模型测试和数值模拟，以评估不同类型的端承和浮动桩的性能。考虑了不同参数的影响，包括路堤填筑高度；桩间距比；桩与相邻地基之间的刚度比；路堤填土的内摩擦角；以及土工格栅的拉伸刚度对路堤的承载力的影响。结果表明，没有牢固支撑的层可以转移载荷并减少沉降。数值研究结果表明，增大桩土刚度比或抗拉刚度，改善路堤填土的抗剪性能，可以成功地提高土工格栅加筋桩支撑路堤的性能。这项研究的发现可以潜在地用于指导未来的浮动桩荷载传递机制和沉降模式的分析。以及土工格栅的拉伸刚度对路堤的承载力的影响。结果表明，没有牢固支撑的层可以转移载荷并减少沉降。数值模拟结果表明，增大桩土刚度比或抗拉刚度，改善路堤填土的抗剪性能，可以成功提高土工格栅加筋桩支撑路堤的性能。这项研究的发现可以潜在地用于指导未来的浮动桩荷载传递机制和沉降模式的分析。以及土工格栅的拉伸刚度对路堤的承载力的影响。结果表明，没有牢固支撑的层可以转移载荷并减少沉降。数值研究结果表明，增大桩土刚度比或抗拉刚度，改善路堤填土的抗剪性能，可以成功地提高土工格栅加筋桩支撑路堤的性能。这项研究的发现可以潜在地用于指导未来的浮动桩荷载传递机制和沉降模式的分析。数值研究结果表明，增大桩土刚度比或抗拉刚度，改善路堤填土的抗剪性能，可以成功地提高土工格栅加筋桩支撑路堤的性能。这项研究的发现可以潜在地用于指导未来的浮动桩荷载传递机制和沉降模式的分析。数值研究结果表明，增大桩土刚度比或抗拉刚度，改善路堤填土的抗剪性能，可以成功地提高土工格栅加筋桩支撑路堤的性能。这项研究的发现可以潜在地用于指导未来的浮动桩荷载传递机制和沉降模式的分析。