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Ground Displacement Analysis of Double-tube Parallel Shield Tunnels

Weiquan Rong and Hong Yuan
MOE Key Laboratory of Disaster Forecast and Control in Engineering, Institute of Applied Mechanics, Jinan University, Guangzhou, 510632, China
Abstract—Ground surface settlement is one of the vital factors to assess the structural safety during tunnel construction. According to the well-known Mindlin displacement solution, we fully analyze the mechanical behavior of ground surface settlement caused by the tunnel construction. Modified formula of ground deformation induced by ground loss is proposed in this paper, which is employed to predict the ground surface settlement induced by the double-line tunnel construction with superposition principle. The successive construction process of double-tube parallel shield tunnels in the same direction is simulated with finite element software FLAC3D, and the simulated results is compared with values calculated by the modified theoretical formula. Finally, we find that our numerical results are in an excellent agreement with the theoretical results. 

Index Terms—Double-tube parallel shield tunnels; Ground surface settlement; Soil loss; Numerical analysis

Cite: Weiquan Rong and Hong Yuan, "Ground Displacement Analysis of Double-tube Parallel Shield Tunnels," International Journal of Structural and Civil Engineering Research, Vol. 8, No. 3, pp. 240-245, August 2019. doi: 10.18178/ijscer.8.3.240-245
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