抗滑桩桩后土拱效应特征的三维数值研究

胡焕校; 刘静; 吴海涛; 周立祥

doi:10.13204/j.gyjz201003020

抗滑桩桩后土拱效应特征的三维数值研究

doi: 10.13204/j.gyjz201003020

1.
1. 中南大学地学与环境学院,长沙410083;
2.
2. 中南大学土木建筑学院,长沙410075

基金项目:

湖南省科技计划项目(2007FJ3072)

详细信息

作者简介:
胡焕校,男,1968年出生,副教授. E－mail:hhx@mail.csu.edu.cn

中图分类号: TU473.1
计量
- 文章访问数: 123
- HTML全文浏览量: 7
- PDF下载量: 110
- 被引次数: 0
出版历程
- 收稿日期: 2009-09-08
- 刊出日期: 2010-03-20

THREE-DIMENSIONAL NUMERICAL ANALYSIS OF SOIL ARCHING EFFECT SURROUNDING ANTI-SLIDE PILE

1.
1. School of Geoscience and Environmental Engineering,Central South University,Changsha 410083,China;
2.
2. School of Civil and Architectural Engineering,Central South University,Changsha 410075,China

摘要

摘要: 通过对抗滑桩桩后土拱效应的三维数值模拟分析,发现在抗滑桩桩后和桩间土体中存在两种不同作用机理的应力拱,抗滑桩桩后土拱效应随着深度的增加而增强,不同性质的土体土拱具有不同的形状。经过对抗滑桩桩后土拱效应影响因素的分析表明,抗滑桩桩后外载荷大小、桩间距、土体内摩擦角、黏聚力、土体与桩体的相对刚度的大小、土体的泊松比、桩土接触面性状等对土拱效应有不同程度的影响。
- 抗滑桩 /
- 土拱效应 /
- 机理 /
- 有限差分法 /
- 数值模拟
Abstract: In this paper,a 3-D numerical analysis is used to simulate the soil arching effect surrounding anti-slide pile with FLAC3D,which is the main manner of the soil-pile interaction. The analytic results show that there are two kinds of stress arches behind the anti-slide pile and in the soil between piles,the soil arching effect will increase with the depth of the soil,and different soil property leads to different soil arching shape. The effecting factors on the behavior of soil arching effect are studied,such as the magnitude of load,the spacing between adjacent piles,the cohesion and internal friction angle of soil,the modulus of elasticity ratio of soil to pile,Poisson ratio,pile-soil interface behavior,etc.
- anti-sliding pile /
- soil arching effect /
- mechanism /
- finite difference method /
- numerical simulation

HTML全文

参考文献(16)

[2] Terzaghi K. Theoretical Soil Mechanics[M]:4th edition. NewYork: John Wiley ＆ Sons,1947:66-76.

Terzaghi K. Theoretical Soil Mechanics[M].New York: JohnWiley ＆ Son,1943.

[3] 杨明,姚令侃,王广军.桩间土拱效应离心模型试验及数值模拟研究[J].岩土力学,2008,29(3):817-822.

[4] Ladanyi B,Hoyaux B A. Study of the Trap Door Problem inGranular Mass[J]. Canadian Geotechnical Journal,1969,6(1):1-14.

[5] Vardoulakis I,Graf B. Trap Door Problem with Dry Sand: AStatically Approach Based Upon Model Kinematics[J]. Int JNamer Analy Mech Geomech,1981(5):57-58.

[6] Koutsabeloulis N C,Griffiths D V. Numerical Modeling of the TrapDoor Problem[J]. Geotechnique,1963,89(SMS):39-72.

[7] 张建华,谢强,张照秀.抗滑桩结构的土拱效应及其数值模拟[J].岩石力学与工程学报,2004,23(4):699-703.

[8] 张建勋,陈福全,简洪钰.被动桩中土拱效应问题的数值分析[J].岩土力学,2004,25(2):174-178,184.

[9] 李忠诚,杨敏.被动受荷桩成拱效应及三维数值分析[J].土木工程学报,2006,39(3):114-117.

[10] Chen C Y,Martin G R. Soil-Structure Interaction for Land slideStabilizing Piles[J]. Computers and Geotechnics,2002,29(3):363-386.

[11] 陈福全,侯永峰,刘毓氚.考虑桩土侧移的被动桩中土拱效应数值分析[J].岩土力学,2007,28(7):1333-1337.

[12] W D L,Yen B C. Soil Arching in Slopes[J]. Journal ofGeotechnical Engineering. Division,ASCE,1974,104(GT4):493-496.

[13] 贾海莉,王成华,李江洪.关于土拱效应的几个问题[J].西南交通大学学报,2003,38(4):398-402..

[14] 蒋良潍,黄润秋,蒋忠信.黏性土桩间土拱效应计算与桩距分析[J].岩土力学,2006,27(3):445-450.

[15] Itasca Software Company. Theory and Back Ground,ConstitutiveModel: Theory and Implementation[M].User Manual of FLAC3D2.0,Minneapolis,M N,USA: It asca Software Company,2002.

[16] 胡斌,张倬元. FLAC3D 前处理程序的开发及仿真效果检验[J].岩石力学与工程学报,2002,21(9):1387-1391.

施引文献

资源附件(0)

访问统计