|本期目录/Table of Contents|

[1]成建阳,周峰,方宁.可控刚度桩基础负摩阻力计算与分析[J].南京工业大学学报(自然科学版),2018,40(04):110-117.[doi:10.3969/j.issn.1671-7627.2018.04.018]
 CHENG Jianyang,ZHOU Feng,FANG Ning.Calculation and analysis of negative skin friction of pile foundation with controllable stiffness[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2018,40(04):110-117.[doi:10.3969/j.issn.1671-7627.2018.04.018]
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可控刚度桩基础负摩阻力计算与分析()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
40
期数:
2018年04期
页码:
110-117
栏目:
出版日期:
2018-07-20

文章信息/Info

Title:
Calculation and analysis of negative skin friction of pile foundation with controllable stiffness
文章编号:
1671-7627(2018)04-0110-08
作者:
成建阳周峰方宁
南京工业大学 交通运输工程学院,江苏 南京 210009
Author(s):
CHENG JianyangZHOU FengFANG Ning
College of Transportation Science and Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
可控刚度 端承桩 负摩阻力 荷载传递法
Keywords:
controllable stiffness end-bearing pile negative skin friction load transfer method
分类号:
TU47
DOI:
10.3969/j.issn.1671-7627.2018.04.018
文献标志码:
A
摘要:
可控刚度桩基础应用于端承型桩基的桩土共同作用时,桩侧产生负摩阻力,如考虑不周会产生一定的安全隐患。基于荷载传递法,依据桩周土体沉降实际分布情况,提出桩长1/3和1/2位置的桩周土体沉降二折线分析模型,得到任意桩身位置处桩身轴力和桩土相对变形解答。分析结果表明:随着长径比、沉降比以及桩侧摩阻力传递系数k的增加,桩身轴力增长率也随之增加; 随着荷载比的增加,桩身轴力增长率减小; 桩身轴力增长率一般不大于10%,在工程设计时应予以考虑。
Abstract:
The pile foundation with controllable stiffness was applied to the pile-soil interaction of the end bearing pile foundation.The negative skin friction of the pile body would produce some security risks if it was not taken into account.Based on the load transfer method,the double line settlement analysis model of the soil around the pile at 1/3 and 1/2 position were put forward,and the axial force of pile body and the relative deformation of pile and soil were obtained.Results showed that with the increase of the aspect ratio,the settlement ratio and the k value of skin frictional resistance of the pile,the growth rate of axial force of the pile would increase,and with the increase of the load ratio,the growth rate of axial force of the pile would decrease.The increase ratio of the axial force of pile body would be less than 10% and should be considered in the design stage.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-04-30
基金项目:国家自然科学基金(51278244)
作者简介:成建阳(1992—),男,江苏建湖人,硕士,主要研究方向为复合桩基; 周峰(联系人),副教授,E-mail:zhoufeng@njtech.edu.cn.
引用本文:成建阳,周峰,方宁.可控刚度桩基础负摩阻力计算与分析[J].南京工业大学学报(自然科学版),2018,40(4):110-117..
更新日期/Last Update: 2018-07-30