摘要
本文基于桩—土—桩动力相互作用原理,将群桩的动力问题化为群桩中每两根桩的动力问题,使分析得到简化。在群桩阻抗函数的推导中引入了桩周软化土域,以近似考虑桩周土的非线性影响。推导针对端承桩及摩擦桩两种情形。编制了专用计算程序VRSPS,进行了参数影响计算及工程实例计算。
In this paper,based on the principle of pile-soil-pile dynamic interaction,thedynamic problem of pile group is reduced to that of every two piles in the pilegroup.This leads to the simplification of the dynamic analysis.For the derivationof vertical impedance function of the pile group,the weakening soil zone aroundthe piles is assumed and taken into account in order to model the nonlinear effectof soil around the piles.Two situations are considered in theoretical derivation:end-bearing piles and floating piles.For the purpose of dynamic analysis,a computerprogram VRSPS is compiled.In addition,the parametric studies of soil-pile groupsystem as well as the analysis of an engineering example are conducted.
出处
《振动工程学报》
EI
CSCD
1991年第2期10-21,共12页
Journal of Vibration Engineering
关键词
群桩
抗震性能
阻抗函数
pile group
earthquake resistant behavior
weakening soil zone
impedance function
vertical carthquake response
