Both stiffened platform effect and soil arching effect are affected by the cushion,so the cushion becomes a key part in pile-supported embankment for pile-soil stress adjustment.

• 桩承路堤在路堤自重作用下形成竖向土拱,并通过土拱传递荷载,其浅层荷载传递机制直接影响到桩土的协调工作和地基的加固效果。