The interaction among embankment fill, horizontal geotextile, pile (cap) and subsoil was analyzed based on the principle of minimum potential energy, and pile efficacy was obtained.

• 摘要基于最小势能原理，分析了路堤填土、水平加筋体、桩（桩顶托板）及桩间土之间的相互作用，得到了桩体荷载分担比。