基于ABAQUS的嵌岩桩数值模拟研究

Numerical simulation of rock-socketed piles based on ABAQUS

嵌岩桩作为现阶段工程建设中应用最为广泛的基础类型,其岩石地基嵌岩桩承载力计算,是山区建筑基础设计最为关键的过程。为研究嵌岩桩承载变形性状随桩长、桩径、桩体模量、嵌岩深度等因素的变化情况,基于ABAQUS数值模拟方法开展研究,结果表明,嵌岩桩桩径增加,相同桩顶位移时桩顶荷载增加,桩径相同,嵌岩比不同时,桩端承担桩顶的荷载随嵌岩比的增大而减小,桩侧摩阻力随桩径的增大而减小,桩身轴力传递率随着嵌岩比的提高而增大。研究成果可为相类似的嵌岩桩基础工程设计计算提供借鉴。

Rock-socketed piles are the most widely used type of foundation in the current stage of engineering construction.The calculation of bearing capacity of rock-socketed piles in rock foundations is the most critical process in the design of building foundations in mountainous areas.In order to study the variation of load-bearing deformation characteristics of rock-socketed piles with factors such as pile length, pile diameter, pile modulus, and rock-socketed depth, this paper conducts research based on the ABAQUS numerical simulation method.When the top is displaced, the load on the top of the pile increases.When the pile diameter is the same and the rock-socketed ratio is different, the load on the pile top on the pile end decreases with the increase of the rock-socketed ratio, and the frictional resistance on the pile side decreases with the increase of the pile diameter.The axial force transmission rate of the pile body increases with the increase of the rock-socketing ratio.The research results of this paper can provide reference for the design and calculation of similar rock-socketed pile foundations.