›› 2005, Vol. 26 ›› Issue (11): 1711-1716.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on key technique of shield tunnel construction beneath adjacent existing highway tunnel

ZHANG Zhi-qiang, HE Chuan   

  1. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031,China
  • Received:2004-05-28 Online:2005-11-10 Published:2014-01-03

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Abstract: The mechanical behaviour of shield tunnel construction beneath adjacent existing highway tunnel is studied by using three-dimensional finite element numerical simulation method. The research demonstrates that it is dangerous to increase jack forces of the shield machine across adjacent upper existing highway tunnel which is considered as a kind of unloading structure. In addition, the jack forces of the shield machine is needed to be drop down to the limit value at 6 m distance from the edge of upper existing highway tunnel and the measurement of the existing highway tunnel floor is enhanced in advancement process of shield machine to guarantee the safety of upper existing structure.

Key words: shield tunnel construction, adjacent existing upper structure, three-dimensional finite element

CLC Number: 

  • TU 454
  • 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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