由单桩载荷试验预测水平受荷群桩的非线性变形

将桩假定为相互作用的非线性弹簧，使用双曲线函数或幂函数拟合试桩的荷载-位移曲线，并用来模拟桩和土的非线性关系。使用相互作用系数的方法分析桩-桩之间的相互作用，并且给出了计算桩-桩相互作用系数的理论公式，从而简化了相互作用系数的计算过程。与现场水平受荷群桩的试验结果进行对比，结果表明，该简化分析方法可以较好地预测水平受荷群桩的非线性变形，理论预测结果与实测结果较为吻合。由于将桩假定为相互作用的非线性弹簧，避免了对桩进行单元划分，从而大大减少了群桩变形的分析时间。该简化方法特别适用于大规模水平受荷群桩的变形分析。

Analysis of Nonlinear Deformation of Pile Groups under Horizontal Load by Pile Load Test

Piles were modeled as interacting nonlinear springs.The load-deformation curves of the tested piles were matched by the hyperbola function or power function and the nonlinear behavior of pile-soil interaction was simulated by these functions.The interaction between piles was analyzed by interaction factors,and the simple functions that predict pile-pile interaction factors were given so that the interaction factors were easily computed.Compared with theoretical and experimental results,this approximate meth...