›› 2007, Vol. 28 ›› Issue (1): 97-101.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Application of strength reduction finite element method to road tunnels

ZHANG Li-ming1, ZHENG Ying-ren2, WANG Zai-quan1, WANG Jian-xin1   

  1. 1. College of Science, Qingdao Technological University, Qingdao 266033, China; 2. Department of Civil Engineering, Logistical Engineering University, Chongqing 400041, China
  • Received:2005-06-29 Online:2007-01-10 Published:2013-08-28

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Abstract: Strength reduction finite element method is used in road tunnel. Based on latent slip surface and safety factor, the rationality of the designed parameters of support and excavations can be judged. The result shows that the distribution of plastic zone is effected greatly by Poisson’s ratios; however, safety factor varies little with it. The higher quality of rock, the more distribution of plastic zone under limit state is got. But the failure zone is lower. Additionally, the more thickness of upper rock layer, the more distribution of plastic zone under limit state is found. Meanwhile, the safety factor decreases. The example also shows that the plastic zone of good rock quality is larger than that of poor rock quality at failure condition. So it is deserved to study about judging safety of tunnel only by its plastic zone.

Key words: strength reduction finite element method, road tunnel, slip surface, safety factor

CLC Number: 

  • TU 4
  • 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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