›› 2004, Vol. 25 ›› Issue (12): 1969-1972.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

2D elastoplastic finite element analysis of stability of surrounding rock-supporting systems of Tieshan Tunnel and Dayakou Tunnel

ZHANG Yu-jun1，LI Zhi-guo2   

  1. 1. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Scientific Institute of China Railway Tunneling Group, Luoyang 471009 , China
  • Received:2004-02-17 Online:2004-12-10 Published:2014-08-19

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Abstract: By using the 2D elastoplastic finite element computations for the stability of two classical sections of Tieshan Tunnel and Dayakou Tunnel, the authors analyse the stresses, displacements and plastic zones in the surrounding rockmasses and the bearing capacities of the initial supports and the second linings; and obtain the relative knowledge: (1) under the special conditions of overburden thicknesses, rockmass types, support structures and loading relaxation ratios, stronger stress concentrations occur at the nearby regions of the tunnel walls, and some parts of the surrounding rockmasses enter plastic states; (2) all the shotcretes, second linings and rock bolts work within the elastic range, and have larger safety reserves.

Key words: tunnel, surrounding rock-supporting system, 2D FEM, elastoplastic analysis

CLC Number: 

  • TU 454
  • 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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