›› 2005, Vol. 26 ›› Issue (S1): 187-192.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analysis and design aiming at control of upwarping deformation of existed tunnel under new tunnel’s excavation

YANG Ting1，2 , WANG Xin-lian2 , XU Qiong-he2, WANG Yi2   

  1. 1. Department of Geotecnical Engineering, Tongji University, Shanghai 200092, China； 2. Nanjing Municipal Design and Research Institute Co., Ltd, Nanjing 210008, China
  • Received:2005-01-21 Published:2005-12-15

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Abstract: The protection of two existed tunnels which are right under the Longpan tunnel’s excavation located in Nanjing Railway Station’s Square is presented. Due to the combining use of piles retaining and strips of excavation, the existed shield tunnel’s upwarping during the excavation is controlled successfully. The analysis and calculation of existed tunnel’s upwarping, the piles retaining’s design and the deformation’s supervision during the construction are also analyzed in detail. This excavation made a good example for the future similar engineering.

Key words: foundation excavation, shield tunnel, upwaarping deformation, strips of excavation, analysis and design, deformation supervision

CLC Number: 

  • U 45
  • 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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