DESENVOLVIMENTO DE SOFTWARE DEDICADO AO ENSINO DE CONCRETO PROTENDIDO – PTOOL

Abstract

Prestressed concrete is a constructive technology capable of overcoming unimaginable spans for reinforced concrete beams. However, its design process is considerably more time- consuming than beams with passive reinforcements. Using computational tools to stimulate learning and allow quick verification of results is an increasingly present alternative. Therefore, this work has as objective the development of PTool, a software dedicated to teach the user all existing steps in the manual calculation of active and passive reinforcements on prestressed concrete beams with initial adhesion. The software presents a report both in a .DOC and in a .PDF file which contains the input data with the characterization of the problem, the internal efforts in 11 span sections, the stresses in the homogenized sections, the finished design of the prestressing reinforcement, the prestressing force and all the representative values intermediate to the calculation according to NBR 6118/2014. It also presents the passive longitudinal reinforcement, the boundary curves, the shear reinforcement and, in one of the possible implementations, makes the calculation of the natural frequency and verification of excessive vibration of the beam, as requested by the PCI Design Handbook (2010), allowing the quick verification of a sizing attempt and presenting a step by step on how the user can do the same report in a manual fashion.