铁道标准设计Issue(1)：8-13,6.DOI:10.13238/j.issn.1004-2954.2016.01.002
桩径对Mindlin附加应力系数的影响分析
Research on Pile Radius Influence on the Coefficient of Mindlin Additive Stress
摘要
Abstract
Based on the analytical solution of Mindlin theory for the additive stress calculation induced by point loading, relationship between pile radius and Mindlin additive stress coefficient is discussed in detail with different poisson ratio and pile length. Subsequently, the minimum influence range of pile radius under different error standard is determined, and the fitting equation of influence range is obtained accordingly. Research results indicate that the influence of the soil poisson ratio on the additive stress is at a very low level, and the greatest error is normally less then 5% if the poisson ratio value of 0. 35 is applied. During the calculation of Mindlin additive stress coefficient, the minimum influence range of pile radius is mainly determined by pile radius, and would keep increasing with the increasing of the pile length. Moreover, if error standards of 1% and 5% are accepted respectively, the minimum influence range of pile radius should be 13. 6 and 6. 41 times of the pile radius respectively.关键词
Mindlin方法/附加应力系数/桩径/桩长/影响范围Key words
Mindlin method/Additive stress/Pile radius/Pile length/Influence range分类
建筑与水利引用本文复制引用
郭帅杰,宋绪国,许再良,隋孝民,任庆昌..桩径对Mindlin附加应力系数的影响分析[J].铁道标准设计,2016,(1):8-13,6.基金项目
中国铁路总公司科技研究开发计划项目(2014G003-B) （2014G003-B）
