摘要
以剪切鼓胀破坏理论为基础 ,同时考虑桩土接触面上的摩擦 ,利用土压力理论探讨了散体材料变截面桩及其复合地基极限承载力的计算方法。通过算例讨论了桩型及桩土接触面上的摩擦角对散体材料桩及其复合地基极限承载力的影响。分析表明 :改变桩型能提高散体材料桩复合地基的承载力 。
Based on the theory of the shear\|swelling failure,and considering the friction on the interface between pile and soil,the limit bearing capacity of the non\|uniform pile with bulk material and the composite foundation are studied by the numerical analysis method based on the earth mechanics theory.The influence of the pile shape and the friction angle of the interface on the limit bearing capacity is discussed by an example.It indicates that the bearing capacity of the composite foundation and the stress ratio of the pile\|soil may be increased and reduced respectively by optimizing pile shape.
出处
《工业建筑》
CSCD
北大核心
2003年第5期43-45,42,共4页
Industrial Construction
基金
湖南省教育厅基础资助项目 (编号 :0 1C3 47)
关键词
承载力
复合地基
置换率
变截面桩
等值内摩擦角
土压力
bearing capacity\ composite foundation\ replacement ratio\ non\|uniform pile\ equivalent angle of internal friction
