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通过无碴轨道桩板结构路基的离心模型试验,研究了桩板结构路基的沉降特性以及桩土相互作用。研究结果表明桩板结构路基施工完成放置5个月后路基面沉降结束,基本达到稳定,通车运营12个月后路基面稳定;桩板结构路基的桩基属于长径比较大的钻孔灌注嵌岩桩,其荷载传递具有摩擦型桩的特性。
Through the centrifugal model test of ballastless track pile foundation subgrade, the settlement characteristics and pile-soil interaction of pile-structure subgrade are studied. The results show that the subgrade settlement of the pile-slab structure subgrade is completed 5 months after the completion of the construction. The settlement of the subgrade surface is basically stable after 12 months of operation. The pile foundation of the subgrade with pile slab structure belongs to the borehole filling Rock pile, its load transfer with the characteristics of friction pile.