Analytical and Numerical Anti-Floating Study Concerning the Shield Tunnel across the River

Abstract:

In the present paper, we consider the floating problem of river-crossing shield tunnel in the process of construction. Firstly, based on the theoretical analysis of equilibrium states of excavation face and shield segments away from shield tail, we obtain the equation for calculating the minimum thickness of overlying soil in the associated equilibrium states. Secondly, the above derived formula are applied in the Fuhe bridge project, which is a sub-project of No.1 Nanchang metro; at the same time, numerical simulation is carried out to further evaluate the safety with the change of overlying soil thickness. Lastly, some useful conclusions are drawn through comparative study, which is helpful to similar projects.

• Periodical: Advanced Materials Research (Volumes 671-674)
• Pages: 1087-1092
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.671-674.1087
• Online since: March 2013
• Authors: Shao Qin Zhang, Wen Jun Yuan*, Hui Hua Zhang, Ling Huang, Yan Fen Zhong
• Keywords: Floating Upward, Lining Segment, Shallow Earthing, Shield Tunnel

References

[1] Qinghe Zhang, Shentang Wang, Changzheng Yan. Tunneling methods through rivers (Lake, Sea) bed under shallow covering by shield. Chinese Journal of Rock Mechanics and Engineering, 23(2004), p.857 (In Chinese).

[2] Xiaoping Dai, Tao Guo, Jianshe Qin. Research on minimum depth burial of shield tunnel machines crossing over ground base under rivers. Rock and Soil Mechanics, 27(2006), p.782. (In Chinese).

[3] Weiyi Zhu: Tunnel standards (shield article) and interpretation (China Building Industry press, China 2001).

[4] Qing-he Zhang, Jiong Bo, tunnel design and construction of Shanghai soft soil. The world tunnel, 2 (1998), p.11 (In Chinese).

[5] Fei Ye. Soft soil shield tunnel construction period separation mechanism analysis and control research. Tongji University, 2007 (In Chinese).

[6] C. B. M. BLOM, E. J. Van der Horst and P.S. Jovanovic: Tunneling and Underground Space Technology, Vol. 14(1999), p.217.

[7] Linchong Shen, XiaoChun Zhong, Jianshe QIN, Fanlu MIN. Determination of minimum thickness of overburden layer for shield tunnel through Qiantang River: Rock and soil mechanics, 32(2011), p.111 (In Chinese).

[8] Lu-ke Xie, Xuyue Hu, Guangtao Zhu. Segment-up control in underwater tune construction by shield: Journal of transport science and engineering, 26(2010), p.59 (In Chinese).

[9] Jianhang Liu, Xueyuan Hou, shield tunnel (China railway publishing house, China 1991).

[10] China construction department, GB50157-2003 Code for design of metro (Chinese Plan Publishing House, China 2003).

[11] Kang Fei, Jianwei Zhang. The application of ABAQUS in geotechnical engineering (China Water Conservancy and Electricity Press, China 2010).

[12] Fangqing Yang. Large diameter muddy water shield tunnel anti-uplift experiment and theoretical research: Tongji University, 2010 (In Chinese).

[13] Beijing urban construction committee, GB50299-1999: Underground railway engineering acceptance specification (In Chinese).