Approach to Calculating the Failure Probability of Bearing Capacity of Augercast Pilling Foundations Using the FOSM Method

Abstract

The predicting difficulty of bearing capacity of foundations becomes a major problem due to the constructions with rigorous construction processes. Hence, the soil spatial variability is often ignored in the calculations of bearing capacity of deep foundations. Consequently, the use of statistic associated with bearing capacity calculations has added important failure probability information of piles foundations. Thus, this work presents a methodology for calculating the probability of failure of bearing capacity using the probabilistic method First Order Second Moment (FOSM). The data used come from a residential building in the city of Águas Claras / Federal District - Brazil. Finally, this work provided a methodology for calculating the probability of failure taking into account soil lithology and spatial variability.