Desenvolvimento de software para determinação dos esforços internos, resistência e análise da confiabilidade de vigas de concreto armado

Abstract

The occurrence of any failure during a strucuture’s lifetime may lead to serious losses, not only of financial value, but also human. Thanks to that, several normative recommendations oriented towards safety emerged, arbitrating coefficients to increase incident actions and mitigate resistances. On the other hand, the endless pursuit for cost reduction demands an accurate estimation of structures and its elements safety level, in order to optimize their performance. Since these normative recommendations preclude the knowledge of structures real failure probabilities, it has been sought to develop models that allow a more precise analysis of the structural elements stability against possible load scenarios. These scenarios, in turn, were analyzed from a probabilistic approach, since the randomness of the phenomena precludes its treatment in a deterministic way, incurring in error and not guaranteeing a satisfactory structural performance. Therefore, it has been developed a software that allows to measure the reliability index of reinforced concrete beam, through a computational model based on Monte Carlo simulations. A probabilistic approach was performed, modeling loads and strengths according to appropriate probability distribution functions. This way, it's possible to measure the security degree of beam elements. The developed software is for academic utilization oriented, encouraging students to question the normative values in force, and inciting the learning about structural safety.