有限元—无限元耦合分析软弱层桩基沉降与变形

On finite element and infinite element coupling analysis of pile foundation settlement of weak layer and its deformation

采用无限元模拟远场区域土体、有限元模拟临近建筑物的土体,建立深厚软弱地基基础分析的无限元与有限元边界耦合分析方法,分析了深厚软弱地基上桩基础的沉降及变形形态,以及沉降对桩侧摩阻力的分布影响,并验证了无限元和有限元耦合分析的合理性。

The paper adopts the infinite dement to simulate the soil mass of distant regions, and the finite element to simulate the soil mass of near regions, establishes the finite element and infinite dement boundary coupling analysis method for the deep and thick weak foundation analysis, analyzes the settlement and deformation forms of the deep and thick weak foundation, and the distribution of the settlement on friction of the pile side, and proves the reasonability of the infinite dement and finite element coupling analysis.