Ddimensionamento a flexão de vigas de concreto armado com protensão não aderente

Abstract

In this work, the bending design of a prestressed concrete beam for a hypothetical residential building is developed. The analysis of prestress losses is carried out, considering both immediate and progressive losses, and assessing their effects on limit states for the design of a 17-meter post-tensioned rectangular beam with non-bonded prestressing. The study begins with a review of theoretical principles of prestressing and major sources of losses. Subsequently, calculation methods are presented to quantify immediate and progressive losses, using analytical models. Finally, checks are performed on serviceability and ultimate limit states. This work provides a procedure for the bending design of such beams, offering an analysis of prestress losses and their effects on limit states. Moreover, it is intended to serve as instructional material for students and engineers interested in structural engineering, contributing to enhancing knowledge and practices in this area of civil engineering.