刚性承台超大群桩承载性状的三维有限元分析

Bearing characters analysis of great pile groups with rigid cap using 3D FEM

为了了解超大群桩基础的承载性状,用有限元分析程序ABAQUS,对土体采用莫尔-库仑模型,对桩土界面采用非线性弹簧模拟荷载传递,对超大直径超长桩组成的群桩基础的承载性状进行了参数分析。具体分析了桩数、桩距、桩长、桩径、土变形模量、土内摩擦角、土粘聚力等因素对群桩的荷载-位移曲线以及桩顶轴力分布的影响规律。

In order to make clear for the bearing characters of great pile groups, a lot of parameters analysis of great pile group was made using program ABAQUS. Load - displacement curve and distributing regular of pile head of pile group was studied by pile number, pile space, pile diameter, Young＇ s modulus of soil, internal friction angle, cohesive strength was analyzed. The results are presented.