桩筏基础非线性共同作用数值分析

Numerical analysis of nonlinear interaction of piled raft foundations

平面壳体单元模拟筏基 ,用一维杆单元模拟桩体 ,用广义剪切位移法和有限层法模拟桩的非线性工作性状和桩 -土、桩 -桩、土 -土之间的非线性相互作用 ,建立了考虑筏板实际刚度的桩筏基础非线性共同作用分析方法。通过算例分析 ,探讨了筏板刚度、布桩方式等因素对桩筏基础非线性共同作用的影响规律。

An approach is presented for the analysis of nonlinear interaction of piled raft foundations in which the raft is modeled with the shell element, and the piles are modeled with truss element. The generalized shear load transfer method and finite layer method are used to model the influence of the pile soil, the pile pile and the soil soil .The responses of nonlinear interaction of piled raft foundations with the variety of pile layouts and raft thickness are studied by numerical example.