›› 2004, Vol. 25 ›› Issue (12): 1973-1976.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on mechanical characteristics of precast block of inverted arch for TBM construction tunnel

ZHOU Jia-mei，GAO Bo，LI Zhi-ye   

  1. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
  • Received:2003-07-14 Online:2004-12-10 Published:2014-08-19

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Abstract: According to the special structure of precast block of inverted arch for TBM construction tunnel , the dynamic construction state is modeled by FEM with surrounding rock- structure calculating model. The calculating results indicate that surrounding rock initial stress has an obvious influence on interior force of invert center, interior force increases with the vertical force increasing in both side of invert center, and decrease with horizontal force increasing in interior side , unchangeable in outer side. Reduce the first-lining size in composite lining or change rigid connection to flexible one can improve the interior force of precast block of inverted arch. And the calculation result is verified with the experimental data. So the conclusions can be for reference for the similar TBM construction tunnel engineering.

Key words: tunnel, tunnel boring machine(TBM), precast block of inverted arch, mechanical characteristics

CLC Number: 

  • U455
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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