- Title
- Cavity expansion in cohesive-frictional soils with limited dilation
- Creator
- Carter, John P.; Yu, Hai-Sui
- Relation
- Geotechnique Vol. -, Issue 18 January 2022
- Publisher Link
- http://dx.doi.org/10.1680/jgeot.21.00141
- Publisher
- I C E Publishing
- Resource Type
- journal article
- Date
- 2022
- Description
- The problem of cavity expansion from zero radius has no characteristic length and therefore possesses a similarity solution, in which the cavity pressure remains constant and the continuing deformation is geometrically self-similar. In this case, the incremental velocity approach first used by R. Hill in 1950 to analyse cavity expansion in Tresca materials can be extended to derive a solution for the limiting pressure of cavity expansion in other types of material. In this paper, a rigorous semi-analytical solution is derived, following Hill's incremental velocity method, for the expansion of cavities from zero initial radius in cohesive-frictional soils with limited dilation. In particular, the radius of the elastic–plastic interface c is used in this paper as the timescale and the solution for the limit pressure has been presented. Solutions are evaluated for a number of cases representative of a range of cohesive-frictional and dilatant soils. A comparison is also made between the solutions presented here and previous solutions for cohesive-frictional soils that have unlimited (on-going) plastic dilation. In particular, the influence of limited plastic dilation on the cavity limit pressure is identified and discussed.
- Subject
- analysis cavity expansion; cohesive-frictional soils; limited dilation; limit pressures plasticity
- Identifier
- http://hdl.handle.net/1959.13/1470261
- Identifier
- uon:48416
- Identifier
- ISSN:0016-8505
- Language
- eng
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