非均质地基中群桩竖向力学反应分析

李早

doi:10.13204/j.gyjz201305017

非均质地基中群桩竖向力学反应分析

doi: 10.13204/j.gyjz201305017

李早

1.
神华国华能源投资有限公司,北京100007

详细信息

作者简介:
作者：李早, 男, 1977年出生, 博士, 高级工程师。电子信箱：Lizao@guohua.com.cn

中图分类号: TU473.1
计量
- 文章访问数: 78
- HTML全文浏览量: 2
- PDF下载量: 83
- 被引次数: 0
出版历程
- 收稿日期: 2012-10-22
- 刊出日期: 2013-05-20

THE ANALYSIS OF PILE GROUPS VERTICAL RESPONSE IN NON-HOMOGENEOUS SOILS

Li Zao

1.
Guohua Energy Investment Corporation Limited,Beijing100007,China

摘要

摘要: 首先基于Winkler地基模型，假设桩土不发生分离，不考虑承台以及地基土对荷载的分担作用，建立单桩竖向位移控制方程。然后采用剪切位移法确定土体竖向位移传递系数，将主动受荷桩引起的土体位移施加于群桩中的受影响桩，计算桩-桩相互影响。最后，采用有限差分法，建立非均质土体中竖向受荷群桩的计算方程，分析群桩竖向力学反应。最后对该方法与已有文献中单桩、群桩在均质、非均质地基中的算例进行对比，总体上取得了较好的一致性。
- Winkler地基 /
- 桩-桩相互影响 /
- 土体竖向位移传递系数 /
- 群桩
Abstract: Firstly, the settlement governing equation was founded based on Winkler foundation model by assuming the soil and the pile kept elastic contact.Secondly, the shearing deformation method was used to calculate the soil settlement transfer factor.Then the pile-pile interaction was analyzed by applying the soil settlement caused by active loaded pile to the passive pile in pile groups.Finally, the finite difference method was used to analyze vertical response of pile groups in non-homogeneous soils.The validity of the proposed approach was verified through comparisons with some published solutions for single piles and pile groups in homogeneous and non-homogeneous soils.Good agreement was obtained in general.
- Winkler foundation model /
- pile-pile interaction /
- soil displacement transfer factor /
- pile groups

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参考文献(16)

Poulos H G. Analysis of the Settlement of Pile Groups [ J]. Gotechnique,1968,18(4):449-471.

[2] Butterfield R,Banerjee P K. The Elastic Analysis of Compressible?Piles and Pile Groups[J]. Gotechnique,1971,21(1):43-60.

[3] Ottaviani M. Three-Dimensional Finite Elment Analysis of?Vertically Loaded Pile Groups[J]. Gotechnique,1975,25(2):159-174.

[4] Randolph M F,Wroth C P. Analysis of Vertical Deformation of?Vertically Loaded Piles[J]. Journal Geotechnique Engineering,ASCE,1978,104(12):1465-1488.

[5] Randolph M F,Wroth C P. Analysis of Vertical Deformation of?Pile Groups[J]. Gotechnique,1979,29(4):423-439.

[6] 刘金砺,黄强,李华,等.竖向荷载下群桩变形性状及沉降计算[J].岩土工程学报,1995,17(6):1-13.

[7] Mylonakis G,Gazetas G. Settlement and Additional Internal?Forces of Grouped Piles in Layered Soil[J]. Gotechnique,1998,48(1):55-72.

[8] 李早,黄茂松.层状地基中刚性承台群桩竖向力学分析[J].同济大学学报:自然科学版,2007,35(4):446-450.

[9] Cooke R W. The Settlement of Friction Pile Foundations[C]// Proceedings of Conference on Tall Buildings.1974.

[10] Poulos H G,Davis E H. Pile Foundation Analysis and Design?[M]. New York: John Wiley and Sons,1980.

[11] Filho R M,Mendona A V,Paiva J B. Static Boundary Element?Analysis of Piles Submitted to Horizontal and Vertical Loads[J]. Engineering Analysis with Boundary Elements,2005,29:195-203.

[12] Poulos H G. Settlement of Single Piles in Non-Homogeneous Soil?[J]. Journal Geotechnique Engineering,ASCE,1979,105(5):627-641.

[13] Banerjee P K,Davies T G. Analysis of Pile Groups Embedded in?Gibson Soil [C]// Proceedings of 9 th ICSMFE.1977:381-386.

[14] Kitiyodom P,Matsumoto T. A Simplified Analysis Method for?Piled Raft Foundations in Non-Homogeneous Soils [ J ]. International Journal Numerical Analytical Methods in?Geomechanics,2003,27:85-109.

[15] Chow Y K. Axial and Lateral Response of Pile Groups Embedded?in Non-Homogeneous Soil [J]. International Journal Numerical?Analytical Methods in Geomechanics,1987,11:621-638.

[16] Banerjee P K,Daivs T G. The Behaviour of Axially and Laterally?Single Piles Embedded in Non-Homogeneous Soils [ J ]. Gotechnique,1978,28(3):309-326.

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