Journal of Shanghai University(Natural Science Edition) ›› 2015, Vol. 21 ›› Issue (4): 454-466.doi: 10.3969/j.issn.1007-2861.2014.01.040

• Metallurgical Materials • Previous Articles     Next Articles

Predictive analysis on shield tunnel using ultra-rapid under pass method

ZHAO Xin-wei1, MA Yong-qi1,2, TENG Li3   

  1. (1. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China; 2. College of Sciences, Shanghai University, Shanghai 200444, China; 3. Shanghai Urban Construction Co., Ltd., Shanghai 200122, China)
  • Received:2014-02-26 Online:2015-08-31 Published:2015-08-31

Abstract: Ultra-rapid under pass (URUP) is a new shield construction method. The shield machine directly excavate from surface of the beginning section to the surface of
the target location. Based on the demonstration project of Nanjing shield tunnel using the URUP method, the whole shield construction process is simulated with a three dimensional nonlinear finite element method (FEM). The ground surface subsidence, the affected area, and the final settlement of ultra-thin ground coverage and partially out of the ground in the shield process are predicted and analyzed. Comparison with the measured data shows that the calculation is reliable. The results provide useful guidance to the project, and may be used as a reference for analysis of similar projects

Key words: 3D finit element method (FEM) simulation, ground surface settlements, predictive analysis, ultra-rapid under pass (URUP) method

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