›› 2008, Vol. 29 ›› Issue (5): 1299-1304.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on system reliability of double span tunnel during different construction stages

SHI Cheng-hua, PENG Li-min   

  1. School of Civil and Architectural Engineering, Central South University, Changsha 410075, China
  • Received:2006-07-06 Online:2008-05-10 Published:2013-07-24

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Abstract: According to the inner forces distribution of double span tunnel under the surrounding rock loading action during different construction stages, the failure mode of the tunnel lining are made by a series- parallel connection system. Then, the Monte-Carlo random FEM is adopted to calculate the reliability of tunnel lining section, with full consideration of influence of the material characteristics, geometric dimensions, elastic resistance coefficient of surrounding rock, loading, etc.; and by using the breadth border method, a range estimation method, the system reliabilities of tunnel lining during different construction stages are studied. The system reliability index of a typical tunnel case is calculated in the end. The calculated results show that the system reliability index of middle wall is smallest after the single tunnel is excavated; and it can’t be safe when be used in long-term. When the tunnel is in construction, the safety of middle wall must be pay attention; and the double arch should be built as soon as possible.

CLC Number: 

  • U 45
  • 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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