›› 2007, Vol. 28 ›› Issue (S1): 449-454.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Deformation and stress distribution of middle-wall for asymmetrically-loaded double-arch tunnel under complicated geological conditions

WANG Shao-qiang1, QIAO Chun-sheng2, XU Gan-cheng3, ZHU Zheng-guo2   

  1. 1. Anhui Provincial Communications Investment Group Co. Ltd., Hefei 230011, China; 2. School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China; 3. Air Force Engineering Design and Research Bureau, Beijing 100077, China
  • Received:2007-05-25 Online:2007-10-25 Published:2014-03-28

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Abstract: Middle wall is an important structure of a double-arch tunnel. To prevent harmful influence by unsymmetrical pressure on middle-wall has become the key problem during double-arch tunnel construction because of its complicated stress and deformation rule. Based on the construction of eccentrically compressed entrance of Fuxi highway double-arch tunnel with heavily jointed soft rock mass, the deformation and internal stress distribution behaviors of the middle wall is analyzed by the three-dimensional numerical simulation in the course of construction. It can be concluded from the result that the top of middle wall moved towards shallow side effected by partial load induced by terrain, and the middle wall also moved backwards and forwards with excavation of left and right tunnel differently. If the top clearance of middle wall is not filled immediately, the displacement and internal stress state of middle wall can be improved effectively. According to the conclusions above some suggestions are made for construction of Fuxi tunnel.

Key words: middle wall, double-arched tunnel, unsymmetrical pressure, numerical simulation, deformation

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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