›› 2007, Vol. 28 ›› Issue (S1): 536-539.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Sensitivity analysis of parameters of cavern-pile method for shallow buried underground excavated tunnels

GAO Cheng-lei, ZHU Yong-quan   

  1. School of Civil Engineering, Shijiazhuang Railway Institute, Shijiazhuang 050043, China
  • Received:2007-05-31 Online:2007-10-25 Published:2014-03-28

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Abstract: As current theoretical research on cavern-pile method for shallow buried underground excavated tunnels lags behind application, the three-dimensional model is established with finite element method based on the action-reaction model in design and calculation theory of underground structure. The stability and displacement of surrounding soil masses relevant to different parameters are analyzed by simulating the construction process with cavern-pile method for shallow buried underground excavated tunnels. The results indicate that the stability and displacement of surrounding soil masses are acceptable when the large-section or super-shallow-buried single-span tunnels are excavated with cavern-pile method for shallow buried underground excavated tunnels. The effect of surface subsidence controlling with cavern-pile method for shallow buried underground excavated tunnels is optimal when span is about 14 meters, and almost uniform when embedded depth is different. The displacement of surrounding soil masses is nearly identical for different height of tunnels. The research may be a guide when we choose the most appropriate construction method for shallow-buried large-section single-span tunnels, or constructing with cavern-pile method for shallow buried underground excavated tunnels.

Key words: tunnel engineering, sensitivity analysis of parameters, FEM, cavern-pile method for shallow buried underground excavated tunnels

CLC Number: 

  • TU 91
  • 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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