摘要
通常打桩过程可以看作是圆柱形空腔体的扩张，并且假设扩张是处于平面应变状态，这一假设有明显的缺陷．本文提出用空间轴对称Ｂｉｏｔ固结有限元法对打桩过程进行模拟．计算结果与实测值较吻合，说明该方法是有效可行的．在此基础上，对打桩引起的地面隆起，桩周土的应力、位移、邻桩应力等问题进行了计算研究，得出了一些初步的成果．
The process of pile-driving is often modelled as cylindrical cavity expansion. In addition, it is ususally assumed that the expansion occurs under plane strain. Some defects obviously exist in this method. A space axial symmetry FEM with Blot's consolidation theory is suggested to simulate the process of pile-driving. This numerical technique is valid because calculation results agree with field data. Calculation results are also reported of the ground heave, stress and deformation of soil around the pile, and the effect on neighbouring piles and some conclusions are obtained.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1996年第1期56-61,共6页
Journal of Hohai University(Natural Sciences)
关键词
打桩
效应
有限元
扩张
圆柱形
腔体
pile-driving
finite element analysis
expansion
cylindrical cavity
