铁道科学与工程学报2016，Vol.13Issue(7)：1282-1288,7.
桩径对Mindlin附加应力系数的影响分析
Research on pile radius effect to 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 the Mindlin additive stress coefficient was discussed in details with different poisson ratio and the pile length.Subsequently,the minimum influence range of pile radius under differ-ent error standard was determined,and the fitting equation of influence range was also obtained accordingly.Re-search results in this study indicated that,influences of soil poisson ratio to the additive stress was at a very low level,and the greatest error was only about 5%if applied the poisson ratio value with 0.35 in common.During the calculation of Mindlin additive stress coefficient,the minimum influence range of pile radius was mainly de-termined by pile radius,and it would keep increasing with pile length.Moreover,if the error standard were 1%and 5%respectively,it would be not necessary to consider the pile radius influences as the distance to the load center had exceed 1 3.6 r0 and 6.41 r0.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
赫永峰,郭乃正..桩径对Mindlin附加应力系数的影响分析[J].铁道科学与工程学报,2016,13(7):1282-1288,7.基金项目
铁路总公司科技研究开发计划资助项目 （）
