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The effect of a curved Mohr-Coulomb failure envelope on the bearing capacity of deep foundations in sands is considered by obtaining solutions to expansion of cavity problems. An analytic expression for a curved envelope is introduced, compared with experimental results and then incorporated in a computer program, EXPAND, to evaluate the expansion pressures. The results are presented in the form of tables and graphs suitable for applications.
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Mohsen M. Baligh (1976) studied this question.
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