层状介质中群桩水平动力阻抗的简化计算方法

Simplified Method for Calculating Horizontal Dynamic Impedances of Pile Groups in Layered Media

采用动力文克尔地基梁模型，导出了层状介质中桩单元的复刚度矩阵，提出了计算层状介质中动力相互作用因子的计算方法，利用单桩动力阻抗和动力相互作用因子计算群桩的水平动力阻抗。文中给出了算例。

The complex stiffness matrix of pile elements is derived and the method for calculating the dynamic interaction factors is suggested based on the winkler foundation beam model. The horizontal impedances of pile groups are determined by using the impedances of single piles and the dynamic interaction factors. The numerical examples are given.