Seismic Stability Analysis of Soil Nail Walls Using the Upper Bound Method

2021 ◽  
Author(s):  
Meysam Imani ◽  
Omid Babaei Pouya
Keyword(s):  
Stability Analysis ◽  
Upper Bound ◽  
Seismic Stability ◽  
Upper Bound Method ◽  
Soil Nail

Face Stability Analysis of Rectangular Tunnels Driven by a Pressurized Shield

2011 ◽  
Vol 378-379 ◽  
pp. 461-465 ◽  
Author(s):  
Xiao Ming Tu ◽  
Yu You Yang ◽  
Gui He Wang
Keyword(s):  
Stability Analysis ◽  
Failure Mechanism ◽  
Upper Bound ◽  
Limit Analysis ◽  
Underground Space ◽  
Face Stability ◽  
Upper Bound Method ◽  
Analysis Theory ◽  
Development And Utilization ◽  
Rectangular Tunnel

With the development and utilization of underground space, some new tunnel forms are emerging, such as the rectangular tunnel, double tunnels, treble tunnels and so on. The aim of this paper is to determine the collapse face pressure of a rectangular tunnel driven by a pressurized shield. The calculation is based on the upper-bound method of the limit analysis theory. A translational kinematically admissible failure mechanism consists a sequence of truncated rigid cones are considered for the calculation schemes. The numerical results obtained by the calculation are presented.

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