|本期目录/Table of Contents|

[1]叶晶晶,黄广龙.桩周上覆荷载作用下抗拔桩弹性变形解析解[J].南京工业大学学报(自然科学版),2016,38(03):63-68.[doi:10.3969/j.issn.1671-7627.2016.03.011]
　YE Jingjing,HUANG Guanglong.Analytical solutions for elastic deformation of uplift pile with compressive loads on the soil[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(03):63-68.[doi:10.3969/j.issn.1671-7627.2016.03.011]
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桩周上覆荷载作用下抗拔桩弹性变形解析解()
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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:
38
期数:
2016年03期
页码:
63-68
栏目:
出版日期:
2016-05-28

文章信息/Info

Title:
Analytical solutions for elastic deformation of uplift pile with compressive loads on the soil
文章编号:
1671-7627(2016)03-0063-06
作者:
叶晶晶; 黄广龙
南京工业大学 交通运输工程学院,江苏 南京 210009
Author(s):
YE Jingjing; HUANG Guanglong
College of Transportation Science & Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
抗拔桩;  上覆荷载;  剪切位移传递法;  弹性解
Keywords:
uplift pile;  compressive load;  shear deformation method;  elastic solution
分类号:
TU473
DOI:
10.3969/j.issn.1671-7627.2016.03.011
文献标志码:
A
摘要:
抗拔桩在实际工作过程中,桩周土体表面存在荷载作用,会对抗拔桩的桩土相互作用特性产生影响。采用桩侧剪切位移传递法与弹性理论相结合,考虑桩周土体表面上覆荷载作用,推导出抗拔桩的桩顶位移、桩身轴力以及桩侧摩阻力随桩身分布的弹性解析解。在此基础上,通过一个实例利用解析解分析上覆荷载作用对抗拔桩位移、轴力以及摩阻力分布的影响。结果表明:桩周土体表面上覆荷载增大了桩上部的侧摩阻力,可有效增大抗拔承载力。与模型试验结果进行对比,发现给出的解析解可较好反映抗拔桩在实际工作状态下的荷载-位移关系(小于极限荷载的40%),可为后续研究提供参考。
Abstract:
Under working conditions,the compressive loads on the surface of soil surrounding uplift piles have an impact on the characteristics of pile-soil interaction.An analytical solution for the pile top displacement, pile axial force and pile shaft friction distribution according to compressive loads on the soil surrounding piles was presented by combination of the elastic theory and the shearing deformation theory. A practical application case was used to analyze the influence of compressive load on the distribution of uplift pile displacement axial force and friction. Result showed that the existence of the compressive load could improve the skin friction and the uplift bearing capacity.Compared with the test results,the solution could reflect the load-displacement relationship(<40% ultimate load)of uplift pile in real work conditions,which could be used as a practical reference for the future studies.

参考文献/References:

[1] 孙晓立.抗拔桩承载力和变形计算方法研究[D].上海:同济大学,2007.
[2] CHATTOPADHYAY B C,PISE P J.Uplift capacity of piles in sand[J].Journal of geotechnical engineering,1986,112(9):888.
[3] DASH B K,PISE P J.Effect of compressive load on uplift capacity of model piles[J].Journal of geotechnical and geoenvironmental engineering,2003,129(11):987.
[4] 陈小强,赵春风,甘爱明.砂土中抗拔桩与抗压桩模型试验研究[J].岩土力学,2011,32(3):738.
[5] 郦建俊,黄茂松,王卫东,等.开挖条件下抗拔桩承载力的离心模型试验[J].岩土工程学报,2010,32(3):388.
[6] 罗耀武,胡琦,凌道盛,等.桩-土界面特性对砂土地基中抗拔桩承载特性影响的模型试验研究[J].岩土力学,2011,32(3):722.
[7] 何思明.抗拔桩破坏特性及承载力研究[J].岩土力学,2001,22(3):308.
[8] 刁钰,郑刚,许洁,等.不同加载条件下抗拔桩静载试验分析[J].岩土工程学报,2011,33(S2):464.
[9] AZZAM W R,MESMARY M.Behavior of single tension pile subjected to surcharge loading[J].Ned university journal of research,2010,7(1):1.
[10] RANDOLPH M F,WROTH C P.Analysis of deformation of vertically loaded piles[J].Journal of the geotechnical engineering division,1978,104(12):1465.
[11] 桩基工程手册编写委员会.桩基工程手册[M].北京:中国建筑工业出版社,1995.
[12] 沈珠江.计算土力学[M].上海:上海科学技术出版社,1990.
[13] 黄锋.单桩在压与拔荷载下桩侧摩阻力发展机理研究[D].北京:清华大学,1998.
[14] XIAO H,ZHANG C,WANG Y,et al.Pile-soil interaction in expansive soil foundation:analytical solution and numerical simulation[J].International journal of geomechanics,2011,11(3):159.
[15] 陈国兴,樊良本,陈甦,等.土质学与土力学[M].南京:中国水利水电出版社,2006.
[16] 陈轮,蒋力,王海燕.DX 桩抗拔位移的弹性理论解析解[J].计算力学学报,2006,23(3):381.
[17] 黄锋,李广信.砂土中抗拔桩位移变形的分析[J].土木工程学报,1999,32(1):31.

备注/Memo

备注/Memo:
收稿日期:2015-06-07
基金项目:国家自然科学基金(41472283)
作者简介:叶晶晶(1989—),女,江苏泰兴人,硕士,主要研究方向为桩基工程; 黄广龙(联系人),教授,E-mail: glhang6710@sina.com.
引用本文:叶晶晶,黄广龙.桩周上覆荷载作用下抗拔桩弹性变形解析解[J].南京工业大学学报(自然科学版),2016,38(3):63-68..
更新日期/Last Update: 2016-05-20