摘要
以m法为基础,用梁函数逼近桩变形曲线,较精确地分析了考虑桩侧摩阻力的桩的稳定性。分析表明,土的抗力增加,桩的刚度减小,桩失稳半波数增加,一般n<10。桩侧摩阻力,特别是负摩阻力对桩的稳定有实质性的影响。
On the basis of m-method in subgrade-reaction theory, horizontal pile displacements are expressed by beam-functions, and the influence of the skin frictional resistance along the pile on stability of end-bearing pile is discussed. The effect of positive and negative skin friction on equivalent length is shown. The calculated results indicate how load transfers along the pile and the negative friction has essential influence on pile stability. So the practice of ignoring the negative friction is dangerous.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第12期2106-2109,共4页
Chinese Journal of Rock Mechanics and Engineering