开挖土体侧移作用下被动单桩能量变分分析方法

梁发云; 张浩

开挖土体侧移作用下被动单桩能量变分分析方法 English Version

梁发云^1,2,
张浩^1,2

(1. 同济大学岩土及地下工程教育部重点实验室，上海 200092；2. 同济大学地下建筑与工程系，上海 200092)

详细信息

作者简介:
梁发云(1976– )，男，安徽肥东人，博士，副教授，主要从事桩基础、地基处理和基坑工程等研究。

中图分类号: TU473
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出版历程
- 收稿日期: 2012-11-12
- 发布日期: 2012-11-12

Variational solution of single passive pile subjected to lateral soil movement induced by adjacent excavation

LIANG Fa-yun^1,2,
ZHANG Hao^1,2

(1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China)

摘要

摘要: 常规设计通常仅考虑桩基受主动荷载作用时的内力和变形，然而基坑开挖引起的土体侧移会使邻近桩基产生附加内力和变形，甚至可能引起桩的破坏。针对此类被动桩问题，基于假定的开挖土体自由场位移模式，采用Winkler地基模型，提出一种能量变分分析方法。该方法基于最小势能原理，通过能量方法建立变分控制方程，针对不同的桩顶约束条件，对被动桩问题进行分析。与经典解答和试验结果对比，验证了本文方法的正确性，该方法能够简便地分析土体侧移作用下被动单桩的性状。
- 土体侧移 /
- 被动桩 /
- 两阶段法 /
- Winkler地基模型 /
- 能量变分方法
Abstract: It is common to consider internal forces and deformation of piles under lateral loads. However, the lateral soil movement due to adjacent excavation can also generate additional internal forces and deformation in pile foundation of adjacent buildings, and it may lead to damage of adjacent pile foundation. Based on assumed soil movement and the Winkler’s foundation model, a variational solution is developed. According to the principle of the minimum potential energy, the variational control equation is established to solve this problem under different pile head restraints. The validity of the proposed method is demonstrated through comparison with the existing theoretical solutions and experimental results. The simplicity of using the proposed solution makes it a good alternative approach to analyze the behavior of piles subjected to lateral soil movement.
- lateral soil movement /
- passive pile /
- two-stage method /
- Winkler’s foundation model /
- variational solution

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参考文献(14)

[1]	杨敏, 朱碧堂, 陈福全. 堆载引起某厂房坍塌事故的初步分析[J]. 岩土工程学报, 2002, 24(4): 446–450. YANG Min, ZHU Bi-tang, CHEN Fu-quan. A preminary study on collapse of an industrial building due to adjacent surcharge loads[J]. Chinese Journal of Geotechnical Engineering, 2002, 24(4): 446–450. (in Chinese)
[2]	梁发云, 于峰, 李镜培, 等. 土体水平位移对邻近既有桩基承载性状影响分析[J]. 岩土力学, 2010, 31(2): 449–454. (LIANG Fa-yun, YU Feng, LI Jing-pei, et al. Analysis of the bearing capacity of a single pile under adjacent building subjected to lateral soil movements[J]. Rock and Soil Mechanics, 2010, 31(2): 449–454. (in Chinese))
[3]	STEWART D P, JEWELL R J, RANDOLPH M F. Design of piled bridge abutments on soft clay for loading from lateral soil movement[J]. Géotechnique, 1994, 44(2): 277–296.
[4]	BYRNE P M, ANDERSON D L, JANZEN W. Response of piles and casings to horizontal free-field soil displacements [J]. Canadian Geotechnical Journal, 1984, 21(4): 720–725.
[5]	GOH A T C, WONG K S. Analysis of piles subjected to embankment induced lateral soil movements[J]. Journal of Geotechnical Engineering, ASCE, 1997, 123(9): 792–801.
[6]	POULOS H G, DAVIS E H. Pile Foundation Analysis and Design[M]. New York: John Wiley and Sons Inc, 1980: 311–322.
[7]	GOH ATC, TEH CI, WONG KS. Analysis of piles subjected to embankment induced lateral soil movements[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1997, 123(9): 792–801.
[8]	HUANG MS, ZHANG CR, LI Z. A simplified analysis method for the influence of tunnelling on grouped piles[J]. Tunnelling and Underground Space Technology, 2009, 24(4): 410–422.
[9]	SHEN W Y, TEH C I. Analysis of laterally loaded piles in soil with stiffness increasing with depth[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2004, 130(8): 878–882.
[10]	YANG K, LIANG R. Numerical solution for laterally loaded piles in a two-Layer soil profile[J]. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 2006, 132(11): 1436–1443.
[11]	LEUNG C F, CHOW Y K, SHEN R F. Behavior of pile subject to excavation-induced soil movement[J]. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 2000, 126(11): 947–954.
[12]	VESIC A S. Bending of beams resting on isotropic elastic solids[J]. Journal of Soil Mechanics and Foundation Engineering, 1961, 87(2): 35–53.
[13]	杨敏, 周洪波. 承受侧向土体位移桩基的一种耦合算法[J]. 岩石力学与工程学报, 2005, 24(24): 4491–4497. (YANG Min, ZHOU Hong-bo. Coupling analytical solution of piles subjected to lateral soil movements[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(24): 4491–4497. (in Chinese))
[14]	POULOS H G. Analysis of piles in soil undergoing lateral movement[J]. Journal of Soil Mechanics and Foundation Division, ASCE, 1973, 99(SM5): 91–406.

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文章访问数: 1019
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开挖土体侧移作用下被动单桩能量变分分析方法 English Version

作者简介: 梁发云(1976– )，男，安徽肥东人，博士，副教授，主要从事桩基础、地基处理和基坑工程等研究。

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出版历程

Variational solution of single passive pile subjected to lateral soil movement induced by adjacent excavation

计量

出版历程

目录

作者简介:
梁发云(1976– )，男，安徽肥东人，博士，副教授，主要从事桩基础、地基处理和基坑工程等研究。