›› 2009, Vol. 30 ›› Issue (6): 1665-1670.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analysis and calculation of superimposed load induced by double parallel shield tunnelling

QI Jing-jing 1, 2，XU Ri-qing2，WEI Gang3   

  1. 1. Shengli Oilfield Technology Inspection Center, Sinopec, Dongying 257002, China; 2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China; 3. Department of Civil Engineering, City College, Zhejiang University, Hangzhou 310015, China
  • Received:2006-11-24 Online:2009-06-10 Published:2011-03-09

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Abstract:

Based on the theory of image method, the formulas of superimposed stress induced by ground loss are obtained. Combining the formulas of superimposed stress induced both by bulkhead additive thrust and frictional force between shield and soil, which are based on the Mindlin solution, the formulas of total soil stress are obtained. The distributions of superimposed load on parallel tunnel, which are caused by all of the factors, are analyzed by using an analytical calculation case. In the analytical process, the distribution of superimposed load caused by ground loss is discussed emphatically. The result obtained will have some referential value in parallel tunnelling.

Key words: superimposed load, image method, ground loss, bulkhead additive thrust, frictional force

CLC Number: 

  • U 45
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