摘要
通过有限元分析，对垂直受力桩在桩顶压、桩顶拔及桩底托等加载方式下的桩侧摩阻力进行了探讨研究。重点研究在不同加载条件下，桩侧摩阻力影响因素。研究结果表明：桩周土应力路径、主应力方向的旋转、桩身本身的压缩和伸长、桩径的膨胀和收缩是不同加载方式下桩侧摩阻力发展和分布有所差异的主要影响因素。
In this paper, attention is focused on the mechanisms of shaft frictions of verticallyloaded single pile under three loading conditions:compressive load at the top of pile, tensile load atthe top of pile and uplifting load at the tip of pile. Finite element analysis is conducted to study themechanisms. It is shown that the development and distributions of shall frictions under the threeloading conditions are different. In addition, it is found that the main potential mechanismsresponsible for the differences lie in the differences in stress paths in soil, rotation of the principalstress directions, the compression or extension of pile shaft and the expansion and contraction ofpile shaft.
出处
《工程力学》
EI
CSCD
北大核心
1999年第6期97-101,69,共6页
Engineering Mechanics
基金
国家自然科学基金!59879008
关键词
桩
桩侧摩阻力
有限元分析
承载力
pile
pile compression
pile extraction
shaft resistance
FEM analysis
