(1东南大学土木工程学院，南京210096；2江苏省建筑设计研究院有限公司，南京210096；3东南大学建筑设计研究院有限公司，南京210096)

[摘要] 通过对刚性桩复合地基桩侧阻力模型的假定，利用弹性力学的求解方法，推导不同侧阻力模型下刚性桩复合地的桩土应力比公式，并与现场试验数据对比，结果与实测数据吻合较好。由此表明在合适的边界条件下，采用弹性力学方法求解刚性复合地基的桩土应力比，具有一定的工程实际意义。

[关键字] 刚性桩复合地基；桩侧摩阻力；现场试验；桩土应力比

中图分类号：TU470+.1      文献标识码：A      文章编号：1002-848X(2013)S1-1488-05

作者简介：顾勇，硕士研究生.

Computation of pile-soil stress ratio of rigid pile composition foundation under different side skin friction

Gu Yong¹, Tao Jinghui²,Liang Shuting¹, Zhu Xiaojun³

(1 Department of Civil Engineering,Southeast University,Nanjing 210096, China; 2 Jiangsu Provincial Architectural D&R Institute Ltd., Nanjing 210096, China; 3 Architects & Engineers., Ltd of Southeast University, Nanjing 210096, China)

Abstract: Assumed the side skin friction model, this paper derived the pile-soil stress ratio formula of rigid pile compostion foundation under different side skin frictions by adopting the elastic mechanical method,and comparesd theoretical results with test data. The result is in good agreement and shows using  elastic mechanical method to calculate the pile-soil stress ration of rigid pile compositon foundation under adequate boundary conditions is practical.

Keyword: rigid pile composition foundation;side skin friction;test; pile-soil stress ratio