带帽刚性桩复合地基荷载传递机理研究

›› 2007, Vol. 28 ›› Issue (8): 1643-1649.

带帽刚性桩复合地基荷载传递机理研究

雷金波^1,2，黄玲¹，刘芳泉¹，王中华¹，殷宗泽²

1. 南昌航空大学土木建筑学院，南昌 330063；2. 河海大学土木工程学院，南京 210098

收稿日期:2005-09-25 出版日期:2007-08-10 发布日期:2013-10-15
作者简介:雷金波，男，1973年生，博士，副教授，主要从事复合地基理论与应用、软基处理等方面的研究和教学工作

Research for load-transfer mechanism of composite foundation of rigid piles with cap

LEI Jin-bo^1,2, HUANG Ling¹, LIU Fang-quan¹, WANG Zhong-hua¹, YIN Zong-ze²

1. College of Civil Engineering and Architecture, Nanchang Hangkong University, Nanchang 330063, China; 2. College of Civil Engineering, Hohai University, Nanjing 210098, China

Received:2005-09-25 Online:2007-08-10 Published:2013-10-15

摘要/Abstract

摘要： 为了研究带帽刚性桩复合地基荷载传递机理，基于弹性理论和合理假定，采用荷载传递函数法，建立了带帽刚性桩复合地基中桩体沉降及其轴向应力、桩帽下土体竖向位移及其竖向应力、桩帽间土体竖向位移及其竖向应力、桩身侧摩阻力、桩帽边缘土体之间的侧摩阻力与荷载水平、深度之间的控制微分方程。采用微分方程的近似解法，推导出相应地解析表达式。利用桩体荷载沉降关系作为已知条件进行求解，计算结果能够反映带帽刚性桩复合地基荷载传递的一般力学性状规律。

关键词: 带帽刚性桩, 荷载传递机理, 桩帽下土体, 桩帽间土体, 性状规律

Abstract: Based on elastic theory and reasonable assumption, the control differential equations have been put forward by adopting the load-transfer function method in order to research the load transfer mechanism of composite foundation of rigid piles with cap, including relations among pile settlement and its axial stress, vertical displacement of soil under pile cap and vertical stress of it, vertical displacement of soil besides pile cap and vertical stress of it, the friction force of pile-side, the soil friction force of the edge of pile cap and load level, depth in rigid pile with cap composite foundation. The corresponding analytical formulas have also been derived by using approximate solution method of differential equation. The calculation results can image basically the mechanical behavior rules of the load transfer for rigid pile with cap composite foundation according to the method proposed, using directly the relation of load-settlement of pile tests as known condition.

Key words: rigid pile with cap, load-transfer mechanism, soil under pile cap, soil besides pile cap, behavior rules

中图分类号:

TU 47

雷金波，黄玲，刘芳泉，王中华，殷宗泽 . 带帽刚性桩复合地基荷载传递机理研究[J]. , 2007, 28(8): 1643-1649.

LEI Jin-bo , HUANG Ling , LIU Fang-quan , WANG Zhong-hua , YIN Zong-ze . Research for load-transfer mechanism of composite foundation of rigid piles with cap[J]. , 2007, 28(8): 1643-1649.

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