Utilização de inteligência computacional de enxame para dimensionamento ótimo de lajes alveolares pré-fabricadas e protendidas

Abstract

The aim of this work is to apply optimization techniques as an initial step in the design of precast and prestressed hollow core slabs using the Firefly Algorithm (FA), considering the average calculation of immediate and progressive prestressing losses. The design variables for optimizing the precast and prestressed hollow core slab are the diameter of the wells, the cross-sectional area of the cable and the height of the slab. Also considered are the Serviceability Limit State and Ultimate Limit State conditions to which the part is subjected, such as bending stresses, shear stresses, normal stresses, construction limitations and failure conditions. Thirty-seven design constraints are evaluated, with the aim of complying with current regulations and structural safety for the design of the part, using the optimization technique as an initial selector of the design variables of the problem studied.