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Received: 2006-01-06

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Journal of Zhejiang University SCIENCE A 2006 Vol.7 No.11 P.1864~1869

10.1631/jzus.2006.A1864


Study on effect of segments erection tolerance and wedge-shaped segment on segment ring in shield tunnel


Author(s):  CHEN Jun-sheng, MO Hai-hong

Affiliation(s):  Department of Civil Engineering, South China University of Technology, Guangzhou 510640, China

Corresponding email(s):   cjsxx@21cn.com

Key Words:  Shield tunnel, Segment, Erection tolerance, 3D finite element analysis


CHEN Jun-sheng, MO Hai-hong. Study on effect of segments erection tolerance and wedge-shaped segment on segment ring in shield tunnel[J]. Journal of Zhejiang University Science A, 2006, 7(11): 1864~1869.

@article{title="Study on effect of segments erection tolerance and wedge-shaped segment on segment ring in shield tunnel",
author="CHEN Jun-sheng, MO Hai-hong",
journal="Journal of Zhejiang University Science A",
volume="7",
number="11",
pages="1864~1869",
year="2006",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2006.A1864"
}

%0 Journal Article
%T Study on effect of segments erection tolerance and wedge-shaped segment on segment ring in shield tunnel
%A CHEN Jun-sheng
%A MO Hai-hong
%J Journal of Zhejiang University SCIENCE A
%V 7
%N 11
%P 1864~1869
%@ 1673-565X
%D 2006
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2006.A1864

TY - JOUR
T1 - Study on effect of segments erection tolerance and wedge-shaped segment on segment ring in shield tunnel
A1 - CHEN Jun-sheng
A1 - MO Hai-hong
J0 - Journal of Zhejiang University Science A
VL - 7
IS - 11
SP - 1864
EP - 1869
%@ 1673-565X
Y1 - 2006
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2006.A1864


Abstract: 
Deformation and dislocations of segments of shield tunnel in construction stage have apparent effect on tunnel structure stress and even cause local cracks and breakage in tunnel. 3D finite element method was used to analyze two segment ring models under uniform injected pressure: (1) segment ring without wedge-shaped segment, which has 16 types of preinstall erection tolerance; (2) segment ring with wedge-shaped segment, which has no preinstall erection tolerance. The analysis results indicate that different erection tolerances can cause irregular deformation in segment ring under uniform injected pressure, and that the tolerance values are enlarged further. Wedge-shaped segment apparently affects the overall deformation of segment ring without erection tolerances. The uniform injected pressure can cause deformation of ring with wedge-shaped segment irregular, and dislocations also appear in this situation. The stress of segment with erection tolerances is much larger than that of segment without erection tolerances. Enlarging the central angle of wedge-shaped segment can make the irregular deformation and dislocations of segments smaller. The analysis results also provide basis for erection tolerance control and improvement of segment constitution.

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Reference

[1] Blom, C.B.M., van der Horst, E.J., Jovanovic, P.S., 1999. Three-dimensional structural analyses of the shield-driven “Green Heart” tunnel of the high-speed line south. Tunnelling and Underground Space Technology, 14(2):217-224.

[2] DIGMC (Design Institute of Guangzhou Metro Corporation), 2002. Construction Documents Design of Line 3 of Guangzhou Track Traffic (in Chinese).

[3] Kasper, T., Meschke, G., 2004. A 3D finite element simulation model for TBM tunnelling in soft ground. International Journal for Numerical and Analytical Methods in Geomechanics, 28(14):1441-1460.

[4] Kiriyama, K., Kakizaki, M., Takabayashi, T., Hirosawa, N., Takeuchi, T., Hajohta, H., Yano, Y., Imafuku, K., 2005. Structure and construction examples of tunnel reinforcement method using thin steel panels. Nippon Steel Technical Report, 92:45-50.

[5] Qin, J.S., Zhu, W., Chen, J., 2004. Study of dislocation of duct pieces and crack problems caused by shield attitude control. Construction Technology, 33(10):25-27 (in Chinese).

[6] Tajima, H., Kishida, M., Fukai, N., Dan, A., Saito, M., 2006. Study on construction loads during shield tunneling using a three-dimensional FEM model. Tunnelling and Underground Space Technology, 21(3-4):250.

[7] Zhang, F.X., Zhu, H.H., Fu, D.M., 2004. Shield Tunnelling Method. China Communications Press, Beijing, p.1-2 (in Chinese).

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