土压平衡盾构施工穿越钱塘江大堤沉降控制分析

任瑛楠; 王弘琦; 王建华

土压平衡盾构施工穿越钱塘江大堤沉降控制分析 English Version

1. 上海交通大学土木工程系,上海 200240; 2. 上海隧道工程股份有限公司,上海 250013

基金项目: 国家自然科学基金项目（41172251）

详细信息

作者简介:
任瑛楠(1989- )，男，辽宁凌源人，硕士，主要从事地基处理及基坑工程等方面的研究。E-mail: ryn1989@126.com。

中图分类号: TU47；U45
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出版历程
- 收稿日期: 2013-07-18
- 发布日期: 2013-11-24

Settlement control of Qiantang River embankments during undercrossing of EPB shield tunnels

1. Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Shanghai Tunnel Engineering Co., Ltd., Shanghai 200082, China

摘要

摘要: 针对杭州地铁1号线区间隧道土压平衡盾构穿越钱塘江大堤的施工过程,建立隧道-土体-大堤三者相互作用的三维非线性有限元模型,分析了大堤沉降和变形的特点,得出盾构穿越施工对防洪堤的影响主要是由于土体的变形和位移而造成。考虑到防汛大堤的重要性,结合工程实践,提出了土压平衡盾构穿越大堤时有效控制地面沉降的措施。现场测试结果表明数值分析反映了穿越施工的基本性状,但施工前进行沼气释放的江南大堤沉降明显大于数值分析结果,表明沼气释放引起的底层损失对于地面沉降和结构安全有巨大影响,今后同类施工中应加以注意。
- 土压平衡盾构 /
- 越江隧道 /
- 防汛大堤 /
- 地面沉降 /
- 施工控制
Abstract: The earth pressure balance (EPB) shield has been widely used in construction of cross-river tunnels, and it is difficult to protect the embankments during crossing. Based on the construction of Hangzhou No. 1 subway tunnel under crossing Qiantang River, a tunnel-soil-levee interaction nonlinear finite element model is established. Through analyzing the characteristics of displacement and deformation, it is found that the settlement of embankment is mainly caused by deformation and displacement of soils when the shield traverses the embankment. Considering the significance of the embankment, some practical and effective measures are suggested for the earth pressure balance shield. The field test results show that the numerical analysis reflects the basic characters of construction. The settlement caused by releasing methane before construction is significantly greater than that of numerical analysis, and the releasing methane has a huge impact on the ground settlement and structural safety. Attention should be paid to similar projects.
- earth pressure balance shield /
- cross-river tunnel /
- embankment /
- ground settlement /
- construction control

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参考文献(6)

[1]	杨红禹, 周建民. 论我国越江隧道的发展[J]. 地下空间, 2000, 20(3): 209-213. (YANG Hong-yu, ZHOU Jian-min. On the development of under-river tunnel in China[J]. Underground Space, 2000, 20(3): 209-213. (in Chinese))
[2]	毛建东. 某盾构施工钱塘江大堤监测成果分析[J]. 水利建设与管理, 2011, 5: 58-75. (MAO Jian-dong. Monitoring result analysis of Qiantang river levee construction[J]. Water Conservancy Construction and Management, 2011, 5: 58-75. (in Chinese))
[3]	沈建奇. 基于并行计算的盾构机过大堤三维数值模拟[J]. 上海交通大学学报, 2008, 48(8): 1296-1300. (SHEN Jian-qi. Three dimensional numerical simulation of shield tunneling through flood levee based on parallel computing[J]. Journal of Shanghai Jiaotong University, 2008, 48(8): 1296-1300. (in Chinese))
[4]	张忠苗, 林存刚, 吴世明, 等. 过江盾构隧道穿越大堤的地层沉降分析及控制[J]. 岩土工程学报, 2011, 33(6): 977-984. (ZHANG Zhong-miao, LIN Cun-gang, WU Shi-ming, et al. Analysis and control of ground settlement of embankments in construction of cross-river shield tunnels[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(6): 977-984. (in Chinese))
[5]	李宗梁, 黄锡刚. 泥水盾构穿越堤坝沉降控制研究[J]. 现代隧道技术, 2011, 48(1): 103-110. (LI Zong-liang, HUANG Xi-gang. Subsidence control research of slurry shield through the embankment[J]. Modern Tunnelling Technology, 2011, 48(1): 103-110. (in Chinese))
[6]	徐国庆, 岳丰田, 王弘琦, 等. 杭州地铁1号线穿越钱塘江地层沼气释放技术探讨[J]. 隧道建设, 2013(3): 247-251. (XU Guo-qing, YUE Feng-tian, WANG Hong-qi, et al. Technology for methane releasing in shield tunneling through Qiantang river formation: Case study on line 1 of Hangzhou metro[J]. Tunnel Construction, 2013(3): 247-251. (in Chinese))

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土压平衡盾构施工穿越钱塘江大堤沉降控制分析 English Version

作者简介: 任瑛楠(1989- )，男，辽宁凌源人，硕士，主要从事地基处理及基坑工程等方面的研究。E-mail: ryn1989@126.com。

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Settlement control of Qiantang River embankments during undercrossing of EPB shield tunnels

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目录

作者简介:
任瑛楠(1989- )，男，辽宁凌源人，硕士，主要从事地基处理及基坑工程等方面的研究。E-mail: ryn1989@126.com。