ABSTRACT

The design of an artificial peninsula near Copenhagen led to an extensive experimental campaign where a significant number of CPTU tests were performed. The CPTU data presented a significant dispersion due to material heterogeneity, which motivated a probabilistic analysis of the soft soil undrained strength. For that purpose, a probabilistic density function of the undrained strength ratio was estimated and introduced as input in a limit equilibrium slope stability analysis. This enables the evaluation of the probabilistic density function of the factor of safety, the probability of failure and the reliability index instead of a single deterministic factor of safety. This information can be used by the designer or project owner to choose between different solutions based on the required level of risk.