Análise da confiabilidade em muro de arrimo

Abstract

The present work aims to analyze the structural reliability of a retaining wall to flexion, dimensioned according to the current literature and norms. For that, the “RT” (Risk Tools) was used and the algorithm for analysis was introduced in it. Therefore, the random variables were provided, together with their means and standard deviation. Finally, the limit state equations that govern the problem. From then on, the probability of failure and the sensitivity index of each random variable were quantified using the Monte Carlo Simples (MCS) and First Order Realiability Method (FORM) reliability methods. With the reading of the results, it was clear that the reinforced concrete retaining wall for the limit state equations regarding the conditions of stability in relation to slipping, tipping and load capacity, the structure has a high index of reliability. As for the equation that verifies the rupture due to the shear force in section 01, it is noted that the values were not within the confidence interval provided by the literature, which makes the probability of failure above acceptable. In addition, when evaluating the contribution of each random variable, it is concluded that cohesion is the parameter that has the greatest contribution to the probability of structural failure.