水流冲刷条件下群桩基础力学性质数值模拟

Numerical Simulation of Grouped Piles Foundation Under the Condition of Current Scour

分析了群桩基础桩-土相互作用的主要特征,对三维问题进行分析并简化,建立桩-土非线性作用问题的有限元求解模型,并对不同工况进行数值计算。根据数值模拟计算所得位移、应变和应力结果,分析不同荷载组合下基桩受力特点和承台受力变形特征,为群桩基础设计考虑土与基础结构协调作用提供依据。

Principal characteristic of the interaction is studied to simplify three-dimensional problem as much as possible to facilitate the modeling and computing.Various working conditions are simulated for further analysis.Last,computational analyses are carried out for working conditions of different loading combinations,providing methods for quantitative calculation of complex engineering problems and methods for quantitative calculation of synergism in the system of pile and soil and cushion cap.