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Investigation of Tunnel Stress Path During Face Advancement

Published online by Cambridge University Press:  05 May 2011

C.-N. Chen  and
W.-Y. Huang
C.-N. Chen*
Affiliation:
Department of Construction Engineering, National Taiwan University of Science & Technology, Taipei, Taiwan 10607, R.O.C.
W.-Y. Huang*
Affiliation:
Department of Construction Engineering, National Taiwan University of Science & Technology, Taipei, Taiwan 10607, R.O.C.
*
*Associate Professor
**Ph.D. student
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Abstract

Tunnel stress path during excavation was investigated in the study scope. The triple-center section is commonly designated for highway tunnels, but the analytical solution of the stress state for a non-circular tunnel section with multiple bench excavations is difficult to obtain. Our investigation provides an algorithmic procedure which reliably evaluates stress adjustment of a bench excavation with respect to the three-dimensional state of stress. Evaluation of a safety factor at the tunnel face during advancement is performed following the stress path and principal stress space.

Keywords

Bench cut tunnelingRoundStress path methodPrincipal stress space.
Type
Technical Note
Information
Journal of Mechanics , Volume 23 , Issue 4 , December 2007 , pp. 451 - 458
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2007

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