- Title
- Bearing capacity analysis of cohesive-frictional soils with dual circular tunnels
- Creator
- Yamamoto, K.; Lyamin, A. V.; Wilson, D. W.; Abbo, A. J.; Sloan, S. W.
- Relation
- 7th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground. Geotechnical Aspects of Underground Construction in Soft Ground: Proceedings of the 7th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground (Roma, Italy 16-18 May, 2011) p. 335-341
- Publisher Link
- http://dx.doi.org/10.1201/b12748-44
- Publisher
- Taylor & Francis
- Resource Type
- conference paper
- Date
- 2012
- Description
- The ultimate bearing capacity and the failure mechanism of cohesive-frictional soils with the inclusion of dual circular tunnels have been theoretically and numerically investigated assuming plane strain conditions. Unlike the case of a single tunnel, the center-to-center distance appears as a new problem parameter, which plays a key role in tunnel stability. A continuous loading is applied to the ground surface. For a series of tunnel diameter to depth ratios and material properties, rigorous lower and upper bound solutions for the ultimate bearing capacity of the considered soil mass are obtained by applying recently developed numerical limit analysis. For practical suitability the results are presented in the form of dimensionless stability charts. As an additional check and also a handy practical means, upper bound rigid block mechanisms for dual circular tunnels have been developed and the predicted collapse loads compared with the results from numerical limit analysis.
- Subject
- bearing capacity; cohesive-frictional soils; dual circular tunnels
- Identifier
- http://hdl.handle.net/1959.13/1308056
- Identifier
- uon:21600
- Identifier
- ISBN:9780415683678
- Language
- eng
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