In order to analyze the effects of backfill materials, geometries and slab setting on the settlement of bridge approach embankment, scale model was built based on the structural characteristics of bridge approach embankment, and scale model tests were carried out under different conditions. The results show that when graded gravels were selected as the backfill materials, the effect of setting approach slab to reduce the differential settlement is more prominent. When lime soils were selected as the backfill material, approach slab can moderate the longitudinal settlement slope. When using different backfill materials, the ultimate settlement of the positive trapezoidal backfill geometries is less than that of the inverted trapezoid, and the backfill geometries have little effect on the settlement slope.

为了分析回填材料，几何形状和平板设置对桥进路堤沉降的影响，根据桥进路堤的结构特点建立了比例模型，并在不同条件下进行了比例模型试验。结果表明，选择分级砾石作为回填材料时，凝结法平板减少差异沉降的效果更为突出。当石灰土壤进行选择作为回填材料，搭板可以适度纵向结算斜率。当使用不同的回填材料时，正梯形回填几何形状的最终沉降小于倒梯形的最终沉降，并且回填几何形状对沉降斜率的影响很小。