2D and 3D upper bound solutions for tunnel excavation using ‘elastic’ flow fields |
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| Authors: | Assaf Klar Ashraf S. Osman Malcolm Bolton |
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| Affiliation: | 1. Faculty of Civil and Environmental Engineering, Technion‐Israel Institute of Technology, Haifa 32000, Israel;2. Senior Lecturer.Faculty of Civil and Environmental Engineering, Technion‐Israel Institute of Technology, Haifa 32000, Israel;3. School of Engineering, Durham University, South Road, Durham DH1 3LE, U.K.;4. Lecturer.;5. Schofield Centrifuge Centre, Department of Engineering, University of Cambridge, High Cross, Madingley Road, Cambridge CB3 0EL, U.K.;6. Professor. |
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| Abstract: | This paper presents 2D and 3D upper bound solutions for the problem of tunnel excavation in soft ground. The solution invokes the use of incompressible flow fields derived from the theory of elasticity and the concept of sinks and sources. Comparison is made with previously published results. For some geometries the current calculation results in lower (better) upper bound values; however, the results were generally close to previously published values. Copyright © 2007 John Wiley & Sons, Ltd. |
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| Keywords: | plasticity tunnels upper bound stability problem |
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