A Numerical Study of the Impact of Tunnel Depth on Surface Displacement in Shield Tunnel Construction

Abstract:

Using 3d finite element method can simulate the process of shield tunnel construction. The paper studies the impact of different tunnel depth on the deformation of soil, when considering different excavation steps in the process of tunnel construction. The results show that the shallower the tunnel depth, and the greater the amount of the surface displacement during the tunnel construction. In the process of the tunnel excavation, the soil surface displacement in front of the shield machine is the result of superposition of the uplift and subsidence. When the tunnel depth increases, the surface displacement curve becomes smoother, and the rate of change becomes slower.

• Periodical: Applied Mechanics and Materials (Volumes 423-426)
• Pages: 1248-1252
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.423-426.1248
• Online since: September 2013
• Authors: Hui Ting Zhan, Hong Yuan, Jia Yu Wu, Yu Sen Yuan
• Keywords: 3D Finite Element Method, Shield Tunnel, Surface Displacement, Tunnel Depth

References

[1] Sagaseta C: Geotechnique, Vol. 07 (1987), p.329.

[2] M. Q. Wang and S.H. Chen: Chinese Journal of Rock Mechanics and Engineering, Vol. 21 (2002), p.228 (In Chinese).

[3] J.H. Liu and X.Y. Hou: Shield tunneling (China Railway Publishing House, Beijing 1991) (In Chinese).

[4] M. FANG, C.Y. ZHOU and Z. LIU: Engineering Mechanics, Vol. 28 (2011), p.133 (In Chinese).

[5] W. Li: Examples of tunnel and underground engineering analysed by ANSYS (China Water Power Press, Beijing 2008) (In Chinese).

[6] F.X. Zhang, D.M. Fu, G.X. Yang and Z.C. Xiang: Shield Tunnel Construction Manual (China Communications Press, Beijing 2005) (In Chinese).

[7] J.F. Xia and N.H. Ye: Principles and ANSYS FEM Application (National Defense Industry Press, Beijing 2011) (In Chinese).