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Journal of Shanghai University（Natural Science Edition）

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FEM Analysis of 3D Temperature Field in Connection Aisle between Tunnels Constructed Using Artificial Freezing Method

JIN Wei-wei1, CHEN You-liang2, LI Lei1, WANG Ling-min3   

  1. 1. Department of Civil Engineering, Shanghai University, Shanghai 200072, China;
    2. College of Urban Construction and Environmental Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
    3. Shanghai Branch of China Coal Special Project Ltd., Shanghai 200135, China
  • Received:2006-10-23 Revised:1900-01-01 Online:2008-02-28 Published:2008-02-28
  • Contact: CHEN You-liang

Cited

14

Abstract: Artificial freezing method is an economical and effective method for digging connection aisles between tunnels. During the freezing, whether or not the wall reaches the designed thickness is important for safe construction. In this paper, the temperature field in the connection aisle of Shanghai East-Fuxing Road tunnels is computed using 3D FEM. The inclined installation of freezing tubes is taken into account in the computation. Paths are established in the bottom, middle and top of the freezing wall for single and double rows of the freezing tubes. Temperature distribution curves are plotted for each path. Significant conclusions can be drawn through observation of the patterns of freezing wall thickness changing with time. The results are useful for safe construction of tunnel connection aisles.

Key words: 3D finite element method, artificial freezing method, freezing wall, connection aisle

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