A shaking table test for a bridge foundation reinforced by anti-slide piles on a silty clay landslide model with an inclined interlayer was performed. The deformation characteristics of the bridge foundation piles and anti-slide piles were analyzed in different loading conditions. The dynamic response law of a silty clay landslide with an inclined interlayer was summarized. The spacing between the rear anti-slide piles and bridge foundation should be reasonably controlled according to the seismic fortification requirements, to avoid the two peaks in the forced deformation of the bridge foundation piles. The “blocking effect” of the bridge foundation piles reduced the deformation of the forward anti-slide piles. The stress-strain response of silty clay was intensified as the vibration wave field appeared on the slope. Since the vibration intensified, the thrust distribution of the landslide underwent a process of shifting from triangle to inverted trapezoid, the difference in the acceleration response between the bearing platform and silty clay landslide tended to decrease, and the spectrum amplitude near the natural vibration frequency increased. The rear anti-slide piles were able to slow down the shear deformation of the soil in front of the piles and avoid excessive acceleration response of the bridge foundation piles.

在倾斜夹层粉质粘土滑坡模型上进行抗滑桩加固桥梁基础振动台试验。分析了桥梁基础桩和抗滑桩在不同荷载条件下的变形特征。总结了含倾斜夹层粉质粘土滑坡的动力响应规律。应根据抗震设防要求合理控制后抗滑桩与桥梁基础的间距，避免桥梁基础桩受迫变形出现两个峰值。桥梁基桩的“阻挡作用”减少了前向抗滑桩的变形。当边坡上出现振动波场时，粉质粘土的应力应变响应加剧。由于振动加剧，滑坡的推力分布经历了由三角形向倒梯形转变的过程，承载平台与粉质粘土滑坡的加速度响应差异趋于减小，自振频率附近的谱幅值增大。后抗滑桩能够减缓桩前土体的剪切变形，避免桥梁基桩产生过大的加速度响应。