Pore Pressure Development: Probability Analysis

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by Sivajogi D. Koppula, Univ of Alberta, Canada,

Document Type: Proceeding Paper

Part of: Probabilistic Methods in Civil Engineering:

Abstract: The development and subsequent dissipation of excess pore pressure, p in a soil deposit subject to an external load is examined using probability concepts that account for uncertainties in Cv, the coefficient of consolidation. A shifted gamma probability density function models the variation in Cv. Expressions are derived for mean and variance of p as functions of the mean time factor, the coefficient of variation v in Cv and the proportion of minimum value 'a' to average value of Cv. It is shown that the scatter in Cv has a significant effect on the consolidation process. The study results are presented in dimensionless quantities for use in geotechnical analysis.

Subject Headings: Soil pressure | Consolidated soils | Pore pressure | Probability | Uncertainty principles | Load factors | Gamma function | Geotechnical investigation |

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