Abstract

The response of laterally loaded piles installed near the crest of clay slopes is analysed. Three-dimensional finite element analyses are presented for piles at various distances from a slope crest and for different pile shape. The results of these analyses are used to study the variation of the pile displacement, the bending moment of the pile and the soil resistance in relation to pile to slope distance and pile shape. The obtained results show that the proximity of slope significantly affects the lateral load capacity of the piles but not significantly when the piles are placed at 7D (where D is pile diameter) or greater from the slope crest. Furthermore, the lateral soil resistance on the ground surface for circular piles is larger than that for rectangular piles at the same lateral load in level ground. The decrease rate of lateral soil resistance on the ground surface for circular piles gets faster as the slope ratio and load level increase.

摘要

分析了安装在粘土边坡顶部附近的横向受载桩的响应。对距离坡顶不同距离的桩和不同的桩形状进行了三维有限元分析。这些分析的结果用于研究桩位移、桩的弯矩和土阻力与桩坡距离和桩形状的关系。获得的结果表明，坡度的接近显着影响桩的横向承载力，但当桩放置在 7 D（其中D是桩直径）或更大从坡顶。此外，在水平地面相同的侧向荷载下，圆形桩的地表侧土阻力大于矩形桩。随着坡比和荷载水平的增加，圆桩地表侧土阻力下降速度加快。