Dimensionamento automático de vigas protendidas biapoiadas considerando a protensão parcial

Abstract

This work presents a study and implementation of a computational program for the design of simply supported prestressed concrete beams according to NBR 6118: 2014. The developed software is able to design of post-tensioned prestressed concrete members with bonded or unbounded tendons. Fully, intermediary and partially prestressed concrete are contemplated. For different loads, program calculates the initial prestress force and the instantaneous and time-dependent losses. Also verifies the excessive compression, decompression limit state, the limit state of cracking and the serviceability limit of excessive deflection. Furthermore performs the ultimate limit states, flexural and shear force design. This program was developed using Microsoft Excel e o Microsoft Visual Basic for Applications, based on the software elaborated by Dominicini and Coelho (2014). It presents user graphical interface and design report, and can be used as a didactic resource in the academic environment at undergraduate and graduate levels. The results obtained are validated by comparison with examples in the literature.