[1]苏栋,袁胜强,李锦辉.水平单向及多向载荷下单桩响应的数值研究[J].深圳大学学报理工版,2011,28(No.5(377-470)):389-394.
 SU Dong,YUAN Sheng-qiang,and LI Jin-hui.Numerical study on response of a single pile under unidirectional and multidirectional horizontal loadings[J].Journal of Shenzhen University Science and Engineering,2011,28(No.5(377-470)):389-394.
点击复制

水平单向及多向载荷下单桩响应的数值研究()
分享到:

《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第28卷
期数:
2011年No.5(377-470)
页码:
389-394
栏目:
土木建筑工程
出版日期:
2011-09-20

文章信息/Info

Title:
Numerical study on response of a single pile under unidirectional and multidirectional horizontal loadings
文章编号:
1000-2618(2011)05-0389-06
作者:
苏栋1袁胜强2李锦辉3
1)深圳大学土木工程学院,深圳 518060
2)河南徐辉建筑工程设计事务所,郑州450008
3)哈尔滨工业大学深圳研究生院,深圳 518055
Author(s):
SU Dong1YUAN Sheng-qiang2and LI Jin-hui3
1)College of Civil Engineering, Shenzhen University, Shenzhen 518060, P.R.China
2)Xuhui Architecture Design Firm, Zhengzhou 450008, P.R.China
3)Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, P.R.China
关键词:
岩土工程桩基砂土水平载荷多向载荷非共轴
Keywords:
geotechnical engineering pile foundation sandy soil horizontal loading multidirectional noncoaxial
分类号:
TU 4
文献标志码:
A
摘要:
利用大型有限元分析软件ABAQUS,建立砂土中单桩的三维弹塑性数值分析模型,通过三轴试验确定土体相关参数,研究水平单向载荷作用下桩头自由和固定时单桩的响应特性,及多向加载路径对单桩承载力的影响.结果表明,桩头自由的单桩在水平力作用下桩身的最大弯矩在土面下约4倍桩径处,桩运动前方土体隆起的最大值出现在桩前约0.5倍桩径处;桩头固定单桩的水平承载力约为桩头自由的2.65倍,且出现较大的桩顶弯矩;多向加载条件下的桩头水平承载力与单向加载条件相比明显减小,随着短长轴比增加,水平加载主方向(X方向)承载力降低,载荷最大值出现得更早.
Abstract:
In many practical projects,pile foundations are required to resist large horizontal loadings besides vertical loadings.A three-dimensional elastoplastic numerical analysis model was set up, useing the FEM software ABAQUS, to study the response of a single pile with a free head or a fixed head under the unidirectional horizontal loading,and to analyze the effect of the multidirectional loading path on the lateral loading capacity of the single pile.In these analyses,the parameters of the soil were determined according to the data of the triaxial tests.It is revealed from the numerical analyses that for the lateral loaded free-head pile,the maximum bending moment occurs at 4D below the soil surface and the maximum vertical displacements of the soil occurs at 0.5D in front of the pile.The lateral loading capacity of the fixed-head pile is about 2.65 times that of the free-head pile,and the maximum bending moment of the former is much larger than that of the latter.The lateral loading capacity under multidirectional paths is apparently smaller than that under unidirectional path. This is consistent with that observed in the experiments.With the increasing aspect ratio,the loading capacity reduces and the maximum force appears earlier.

参考文献/References:

[1] XU Bin,LU Jian-fei,WANG Jian-hua.半无限多层多孔介质弹性空间中单桩在侧向简谐载荷下的动力响应[J].国际岩土数值与解析方法期刊,2010,34(5):493-515.(英文版)
[2] Ali B.水平载荷作用下砂土中的单桩:由预钻孔旁压试验试验确定p-y曲线 [J].岩土与地质工程,2007,25(3):83-301.(英文版)
[3] 王梅,楼志刚,李建乡,等.水平荷载作用下单桩非线性m法试验研究[J].岩土力学,2002,23(1):23-26.
[4] Sanjeev K,Latika L,Maher O.水平载荷作用下砂土中单桩非线性响应分析的kh max 方法[J].岩土与地质工程,2006,24(1):163-181.(英文版)
[5] 刘汉龙,陶学俊,张建伟,等.水平荷载作用下PCC桩复合地基工作性状[J].岩土力学,2010,31(9):2716-2722.
[6] 赵明华,汪优,黄靓.水平受荷桩的非线性无网格法分析[J].岩土工程学报,2007,29(6):907-912.
[7] 乔友刚,吴先敏.水平受荷桩非线性有限元分析[J].水运工程,2009,4:38-42.
[8] LI Xiang-song.基于与状态相关剪胀性的砂土模型 [J].岩土技术,2002,52(3):173-186.(英文版)
[9] 苏栋,李霞,李相崧.桩-土水平相互作用的颗粒流数值研究[J].深圳大学学报理工版,2006,23(1):42-47.


[1] XU Bin,LU Jian-fei,WANG Jian-hua.Dynamic responses of a pile embedded in a layered poroelastic half-space to harmonic lateral load[J].International Journal for Numerical and Analytical Methods in Geomechanics, 2010,34(5):493-515.
[2] Ali B.Single piles under horizontal loads in sand:determination of p-y curves from the prebored pressuremeter test[J].Geotechnical and Geological Engineering,2007,25(3):83-301.
[3] WANG Mei,LOU Zhi-gang,LI Jian-xiang,et al.Nonlinear analysis of m method for single pile under lateral loading[J].Rock and Soil Mechanics,2002,23(1):23-26.(in Chinese)
[4] Sanjeev K,Latika L , Maher O.Nonlinear response of single piles in sand subjected to lateral loads using kh max approach[J].Geotechnical and Geological Engineering,2006,24(1):163-181.
[5] LIU Han-long,TAO Xue-jun,ZHANG Jian-wei,et al.Behavior of PCC pile composite foundation under lateral load[J].Rock and Soil Mechanics,2010,31(9):2716-2722.(in Chinese)
[6] ZHAO Ming-hua,WANG You,HUANG Liang.Nonlinear analysis of meshless method for piles under horizontal load[J].Chinese Journal of Geotechnical Engineering,2007,29(6):907-912.(in Chinese)
[7] QIAO You-gang.WU Xian-min.Non-linear finite element analysis of laterally loaded pile[J].Port & Waterway Engineering,2009,4:38-42.(in Chinese)
[8] LI Xiang-song.A sand model with state-dependent dilatancy[J].Géotechnique,2002,52(3):173-186.
[9] SU Dong,LI Xia,LI Xiang-song.Numerical study on lateral soil-pile interaction by particle flow code[J].Journal of Shenzhen University,2006,23(1):42-47.(in Chinese)

相似文献/References:

[1]郭彪,韩颖,龚晓南,等.考虑横竖向渗流的砂井地基非线性固结分析[J].深圳大学学报理工版,2010,27(4):459.
 GUO Biao,HAN Ying,GONG Xiao-nan,et al.Nonlinear consolidation behavior of sand foundation with both horizontal and vertical drainage[J].Journal of Shenzhen University Science and Engineering,2010,27(No.5(377-470)):459.
[2]张永兴,陈林.地震作用下挡土墙主动土压力分布[J].深圳大学学报理工版,2012,29(No.1(001-094)):31.[doi:10.3724/SP.J.1249.2012.01031]
 ZHANG Yong-xing and CHEN Lin.Seismic active earth pressure of retaining wall[J].Journal of Shenzhen University Science and Engineering,2012,29(No.5(377-470)):31.[doi:10.3724/SP.J.1249.2012.01031]
[3]刘顺青,洪宝宁,方庆军,等.高液限土和红黏土的水敏感性研究[J].深圳大学学报理工版,2013,30(No.1(001-110)):78.[doi:10.3724/SP.J.1249.2013.01078]
 Liu Shunqing,Hong Baoning,et al.Study on the water sensitivity of high liquid limit soil and red clay[J].Journal of Shenzhen University Science and Engineering,2013,30(No.5(377-470)):78.[doi:10.3724/SP.J.1249.2013.01078]
[4]李凡,李雪峰.两条雁行预制裂隙贯通机制的细观数值模拟[J].深圳大学学报理工版,2013,30(No.2(111-220)):190.[doi:10.3724/SP.J.1249.2013.02190]
 Li Fan and Li Xuefeng.Micro-numerical simulation on mechanism of fracture coalescence between two pre-existing flaws arranged in echelon[J].Journal of Shenzhen University Science and Engineering,2013,30(No.5(377-470)):190.[doi:10.3724/SP.J.1249.2013.02190]
[5]王杏杏,潘林,高凌霞,等.黄土微结构的谱系聚类分析[J].深圳大学学报理工版,2016,33(No.4(331-440)):394.[doi:10.3724/SP.J.1249.2016.04394]
 Wang Xingxing,Pan Lin,Gao Lingxia,et al.Pedigree clustering analysis of the microstructure of loess[J].Journal of Shenzhen University Science and Engineering,2016,33(No.5(377-470)):394.[doi:10.3724/SP.J.1249.2016.04394]
[6]杨果林,龚铖,黄玮.GFRP桩在泥炭质土中静压挤土的效应试验[J].深圳大学学报理工版,2016,33(No.5(441-550)):484.[doi:10.3724/SP.J.1249.2016.05484]
 Yang Guolin,Gong Cheng,and Huang Wei.Experiments of soil compacting effect of GFRP pile in peaty soil[J].Journal of Shenzhen University Science and Engineering,2016,33(No.5(377-470)):484.[doi:10.3724/SP.J.1249.2016.05484]
[7]林署炯,冉孟胶,陈剑尚,等.填埋固化污泥土的压缩过程及微结构变化[J].深圳大学学报理工版,2017,34(No.2(111-220)):147.
 Lin Shujiong,Ran Mengjiao,Chen Jianshang,et al. Compression process of the landfilled solidified sludge soil and its microstructure changes[J].Journal of Shenzhen University Science and Engineering,2017,34(No.5(377-470)):147.
[8]陈之祥,李顺群,夏锦红,等.基于紧密排列土柱模型的冻土热参数计算[J].深圳大学学报理工版,2017,34(No.4(331-440)):393.[doi:10.3724/SP.J.1249.2017.04393]
 Chen Zhixiang,Li Shunqun,Xia Jinhong,et al.Calculation of thermal parameters of frozen soil based on the closely spaced soil column model[J].Journal of Shenzhen University Science and Engineering,2017,34(No.5(377-470)):393.[doi:10.3724/SP.J.1249.2017.04393]
[9]肖成志,李晓峰,张静娟.压实度和含水率对含砂粉土性质的影响[J].深圳大学学报理工版,2017,34(No.5(441-550)):501.[doi:10.3724/SP.J.1249.2017.05501]
 Xiao Chengzhi,Li Xiaofeng,and Zhang Jingjuan.Effect of compaction degree and water content on performance of sandy silt[J].Journal of Shenzhen University Science and Engineering,2017,34(No.5(377-470)):501.[doi:10.3724/SP.J.1249.2017.05501]
[10]陈峰.早龄期玄武岩纤维水泥土的强度及变形特性[J].深圳大学学报理工版,2017,34(No.6(551-660)):611.
 Chen Feng.Strength and deformation characteristics of basalt fiber cement-soil[J].Journal of Shenzhen University Science and Engineering,2017,34(No.5(377-470)):611.

备注/Memo

备注/Memo:
收稿日期:2010-10-20;修回日期:2011-06-28
基金项目:国家自然科学基金资助项目(50978165);深圳市公共科技资助项目(SY200806270074A)
作者简介:苏栋(1978-),男(汉族),福建省永定县人,深圳大学副教授. E-mail:sudong@szu.edu.cn
更新日期/Last Update: 2011-09-22