为研究桩帽连梁式路堤的变形特征与荷载传递规律，通过室内模型试验，采用不同的桩间距、梁宽和桩长配置，并调整填土黏聚力，监测土压力和沉降，并基于数值模拟对依托工程进行了设计优化。结果表明：桩间距的增大显著增加桩土差异沉降和桩土应力比；梁宽对差异沉降的影响较小，但在大桩间距情况下，梁宽增加能显著提高荷载分担能力；桩端在软土与砂土交界面的差异沉降最大；填土黏聚力的增加能有效降低差异沉降，促进荷载向桩顶传递，提升路堤整体稳定性。可见，在实际工程中增大桩间距的同时增大梁宽能够在节省造价的同时不降低承载力，且应尽可能避免桩端处于交界面，并提升填土黏聚力以降低差异沉降。

In order to investigate the deformation characteristics and load transfer mechanisms of piled beam-supported embankments, laboratory model tests were conducted using different pile spacings, beam widths, and pile lengths, while the cohesion of the embankment fill was adjusted. Soil pressure and settlement were monitored during the tests. The results show that increasing the pile spacing significantly increases the differential settlement between the pile and soil, as well as the pile-soil stress ratio. The beam width has a smaller effect on differential settlement, but increasing the beam width in cases of larger pile spacing can significantly improve the load-sharing capacity. The differential settlement at the pile tip is greatest at the interface between soft soil and sandy soil. It is concluded that increasing both pile spacing and beam width in practical engineering can save construction costs without reducing bearing capacity. The pile tip should be avoided at the soil interface, and increasing the cohesion of the embankment fill can reduce differential settlement.