大直径超长灌注桩弹塑性有限元分析

Elastoplastic FEM Analysis on Large Diameter and Super Length Bored Piles

本文在对包含点面接触单元的弹塑性有限元模型进行分析和验证的基础上,以苏通大桥的大型灌注桩为例进行了数值模拟计算。结果显示,该包含点面接触单元的弹塑性有限元法是可靠的,能模拟桩土之间的大变形,其数值模拟结果可为工程的桩基设计提供依据。

A numerical simulation with FEM model comprising point surface contact element was provided on large diameter and super long bored piles in Sutong Yangtze bridge. An analysis and validation were given for this FEM with test data of pile in Jiangyin Yangtze bridge. The result shows that this FEM numerical simulation method comprising point surface contact element is a reliable method, and it can simulate large deformation between pile and soil, and provide an evidence for the design of piles foundation.