隧道施工条件下临近群桩水平力学反应分析方法

李早; 黄茂松

doi:10.13204/j.gyjz200901017

隧道施工条件下临近群桩水平力学反应分析方法

doi: 10.13204/j.gyjz200901017

李早¹,
黄茂松²

1.
1. 国华能源有限公司,北京 100044;
2.
2. 同济大学地下建筑与工程系,上海 200092

详细信息

作者简介:
李早,男,1977年10月出生,博士,工程师.E-mail:lizao2002@hotmail.com

计量
- 文章访问数: 45
- HTML全文浏览量: 3
- PDF下载量: 96
- 被引次数: 0
出版历程
- 收稿日期: 2007-10-11
- 刊出日期: 2009-01-20

A ANALYTICAL METHOD FOR LATERAL BEHAVIOR OF PILE GROUPS ADJACENT TO TUNNELLING

Li Zao¹,
Huang Maosong²

1.
1. Guohua Energy Go.,Ltd.,Beijing 100044,China;
2.
2. Department of Geotechnical Engineering,Togji University,Shanghai 200092,China

摘要

摘要: 采用两阶段分析方法,提出隧道施工对群桩水平位移和内力影响的简化解析计算方法:第一阶段采用Loganathan解析解估算隧道开挖引起的土体水平自由位移场,第二阶段首先基于Winkler地基模型把桩视作弹性地基梁,将自由土体位移施加于桩并建立单桩水平位移控制方程,然后应用简化Mindlin方程,考虑被动群桩的桩-桩相互影响,计算被动群桩的遮拦效应,最后得到隧道开挖对被动群桩的影响,并与边界元法分析结果及工程实测数据进行对比,得到了较好的一致性。
- 两阶段分析法 /
- Winkler地基模型 /
- 被动群桩 /
- 遮拦效应 /
- Mindlin解
Abstract: A simple analytical two-stages method for determining the lateral displacement and internal forces of group piles caused by tunnelling is presented here. The analytical solution proposed by Logananthan and Poulos is used to estimate the free-field soil lateral displacement induced by tunnelling at the first stage. At the second stage, the pile is treated as a beam on elastic foundation based on Winkler model and the lateral displacement governing equation of single pile is formulated by composing the free-field soil lateral movement to the pile. Then it is computed the shielding effect due to pile-pile interaction of passive group piles using simpli fied Mindlin equation. Finally the response of passive group piles due to tunnelling is obtained. The result from present approach is compared with that from FEM and BEM, good agreement is obtained.
- two-stage method /
- Winkler model passive pile group /
- shielding effect /
- Mindlin . s equation /

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参考文献(21)

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