›› 2006, Vol. 27 ›› Issue (S1): 524-528.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental research on frost-heave force of tunnel in frozen earth region

KUANG Liang1, QIU Wen-ge2   

  1. 1. Civil and Architecture No.2 Design and Research Institute, Railway No.2 Survey and Design Institute, Chengdu 610031, China 2. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
  • Received:2006-07-08 Published:2006-12-15

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Abstract: The equivalent frost-heave force model experiment of tunnel in frozen earth region including lining types of bending wall, straight wall and rotundity and considering influencing factors consist of constraint conditions, thermal insulation material and containing water status etc., are described in detail. Distribution characteristics and quantity value of frost-heave force around the tunnel lining and structural internal force caused by frost-heave force, are obtained by analyzing the experimental results. Comparing with the magnitude of frost-heave force of three lining sections, the frost-heave force value of straight wall lining section is greatest, the value of rotundity section is smallest, the value of bending wall lining section is middle of them. The frost-heaving force distribution characteristic of bending-wall lining section and straight wall express distributing load configuration, the greater value of the former occurs on arch foot and inverted arch foot, the greatest value of the latter occurs on side wall, the quite greater force on walls and bottom board is disadvantage for lining structure.

Key words: tunnel in frozen earth region, frost-heave force, model experiment, similarity ratio

CLC Number: 

  • TU 445
  • 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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