大直径钢管桩承载力的非线性分析  

Nonlinear analysis of carrying capacity of a large diameter steel pipe pile

作　　者：汪宏[1] 李志明[1] 王林[1] 刘保国[1] 

机构地区：[1]江苏科技大学船舶与土木工程系,镇江212003

出　　处：《岩土力学》2005年第S1期213-217,共5页Rock and Soil Mechanics

基　　金：江苏省教委自然科研基金课题资助(No.2KJD560001)。

摘　　要：推导了砂土地基中闭口管桩的沉桩影响半径以及刚性桩的横向承载力(矩)。通过使用MATLAB程序对单桩轴向刚度的分析,得出了其与桩周单位深度土的等效刚度系数、桩端土的等效刚度系数、钢管桩的壁厚、桩径、桩长、桩身弹性模量等参数之间的一些关系,从而为此类桩的优化设计提供了理论依据。在此基础上通过桩身荷载传递的双曲线函数模型以及相关参数,在已知(假定)桩身压缩量的情况下求出相应的桩顶轴力。This paper has deduced the effected diameter of a closed large diameter pipe pile on sand ground as well as the horizontal resistance (or moment) acting on the rigid large diameter pipe pile. And, it provides the theoretically optimal design for the similar case; and by using the MATLAB program to analyze the axial stiffness of single pile, the relationships of stiffness of single pile, and the equivalent stiffness modulus of the soil beside the pile for unit depth, the equivalent stiffness modulus of the s...

关 键 词：大直径钢管桩 沉降 承载力 变位 单桩轴向刚度 

分 类 号：TU473.11[建筑科学—结构工程]