深基坑开挖对邻近运营地铁的影响分析

尹宏磊; 韩煊

深基坑开挖对邻近运营地铁的影响分析 English Version

尹宏磊,
韩煊

(北京市勘察设计研究院有限公司，北京 100038)

详细信息

作者简介:
尹宏磊(1980– )，男，河南镇平人，博士，主要从事基坑工程、地铁隧道工程等方面的研究与风险评估工作。

中图分类号: TU47
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出版历程
- 收稿日期: 2012-11-12
- 发布日期: 2012-11-12

Influence of deep excavation on adjacent subway

(BGI Engineering Consultants Ltd., Beijing 100038, China)

摘要

摘要: 城市深基坑的施工中，往往会引起周围建（构）筑物的变形。对于临近运营地铁的基坑工程，由于其严格的变形控制要求，分析中对变形的合理预测是重点。本文通过研究小应变硬化本构模型的理论基础，根据北京地区的工程经验，针对这一高级本构模型，初步提出了适用于北京地区工程地质特点的主要参数取值方法。以北京地区某实际工程为例，本文采用小应变本构模型和莫尔库仑模型分别对其变形进行分析预测，并与实测结果对比表明，采用目前工程中最常用的莫尔库仑模型预测的结果与实际有很大的偏差，不适合用于变形控制设计的基坑分析，而小应变硬化模型较好的模拟了施工实际引起的变形，预测的隧道结构变形接近实测结果。
- 深基坑 /
- 变形控制 /
- 刚度变化 /
- 本构模型 /
- 小应变
Abstract: Urban excavations always result in deformations of surrounding buildings. In the analysis, reasonable prediction of deformations is of importance. After studies on the theory of hardening small strain (HSS) constitutive model, a series of experiential parameters are proposed. Adjacent to the operating subway, an excavation is put on by a strict deformation standard. The deformations of diaphragm wall and tunnel are predicted using the HSS model and the Mohr Coulomb model. A great difference is found between the Mohr Coulomb and observed results, while the HSS model reproduces the site deformation well. As a result, incorporating the HSS model into the deformation-control design is feasible.
- deep excavation /
- deformation control /
- stiffness variation /
- constitutive model /
- small strain

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参考文献(10)

[1]	侯学渊, 刘国彬, 黄院雄. 城市基坑工程发展的几点看法[J]. 施工技术, 2000, 29(1): 5–7. (HOU Xue-yuan, LIU Guo-bin, HUANG Yuan-xiong. Several views on the development of urban foundation work [J]. Construction Technology, 2000, 29(1): 5–7. (in Chinese))
[2]	龚晓南. 基坑工程发展中应重视的几个问题[J]. 岩土工程学报, 2006, 28(增刊): 1321–1324. (GONG Xiao-nan. Some major problems in the development of foundation pit engineering[J]. Chinese Jounal of Geotechnical Engineering, 2006, 28(S0): 1321–1324. (in Chinese))
[3]	OBRZUD R, TRUTY A. The hardening soil model- a practical guidebook[R]. ZSoil.PC 100701 Report, 2011.
[4]	SCHANZ T, VERMEER, P A, BONNIER P G, The hardening soil model: formulation and verification [C]// Beyond 2000 in Computational Geotechnics-10 Years of PLAXIS. Rotterdam: Balkema, 1999.
[5]	BENZ T. Small strain stiffness of soils and its numerical consequence[D]. Stuttgart University, 2006.
[6]	尹骥. 小应变硬化模型在上海地区深基坑工程中的应用 [J]. 岩土工程学报, 2010, 32(增刊): 166–172. (YIN Ji. Application of hardening soil model with small strain stiffness in deep foundation pits in Shanghai[J]. Chinese Jounal of Geotechnical Engineering, 2010, 32(S0): 166–172. (in Chinese))
[7]	王海波, 徐明, 宋二祥. 基于硬化土模型的小应变本构模型研究[J]. 岩土力学, 2011, 32(1): 39–43. (WANG Hai-bo, XU Ming, SONG Er-xiang. A small strain constitutive model based on hardening soil model[J]. Rock and Soil Mechanics, 2011, 32(1): 39–43. (in Chinese))
[8]	褚峰, 李永盛, 梁发云, 等. 土体小应变条件下紧邻地铁枢纽的超深基坑变形特性数值分析[J]. 岩石力学与工程学报, 2010, 29(增刊1): 3184–3192. (CHU Feng, LI Yong-sheng, LIANG Fa-yun, et al, Numerical analysis of deformation of deep excavation adjacent to metro considering small-strain stiffness of soil[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(S1): 3184–3192. (in Chinese))
[9]	曹权, 施建勇, 柴寿喜, 等. 小应变下土体刚度非线性分析的试验研究[J]. 岩土工程学报, 2009, 31(5): 699–703. (CAO Quan, SHI Jian-yong, CHAI Shou-xi, et al Non-linear analysis of stiffness of soils under small strain[J]. Chinese Jounal of Geotechnical Engineering, 2009, 31(5): 699–703. (in Chinese))
[10]	汪中卫, 王海飙, 戚科骏, 等. 土体小应变试验研究综述与评价[J]. 岩土力学, 2007, 28(7): 1518–1524. (WANG Zhong-wei, WANG Hai-biao, QI Ke-jun, et al. Summary and evaluation of experimental investigation on small strain of soil[J]. Rock and Soil Mechanics, 2007, 28(7): 1518–1524. (in Chinese))