斜坡桥台桩基竖直承载能力数值分析

Numerical analysis of vertical bearing capacity of pile foundation on slope pier

采用FLAC3D软件模拟计算斜坡桥台桩基础竖直承载能力,建立了考虑不同坡度、不同嵌岩深度和不同桩径的二维有限差分模型,数值计算了不同影响因素对斜坡嵌岩桩竖直承载力的影响。数值计算表明,随着坡度的增加,承载力呈现先增加后减少的趋势;随着嵌岩深度的增加,承载力逐渐增加;随着桩径的增加,承载力逐渐减少;斜坡嵌岩桩的承载力大部分都比平地桩承载力要更大。

In this paper,FLAC3D software is used to simulate and calculate the vertical bearing capacity of pile foundation on slope abutment. A two-dimensional finite difference model considering different slope,different rock-socketed depth and different pile diameter is established. The influence of different factors on the vertical bearing capacity of rock-socketed pile on slope is numerically calculated. The numerical calculation shows that with the increase of slope,the bearing capacity increases first and then decreases;with the increase of rock-socketed depth,the bearing capacity increases gradually;with the increase of pile diameter,the bearing capacity decreases gradually;the bearing capacity of rock-socketed piles on slopes is mostly larger than that of flat-ground piles.