Dimensionamento por computador de vigas biapoiadas protendidas póstracionadas

Abstract

This work deals with the dimensioning of bi supported post-traction prestressed beams using computer (Mathcad). Since the dimensioning of structures is an iterative process, which implies the need to repeat the same process several times until the desired result is obtained. In this work, routines and calculation processes were elaborated that, from the insertion of data in an intuitive way, carried out the dimensioning of the structure considering the Limit States. It was also aimed, through the automated routine, to provide the most economical solution by means of the output of data informing the amount of necessary struts, and it is up to the user to decide what will be the configuration of the strings set will be adopted. With the determined parabolic geometric tracing, the losses of the pretension will be calculated, and the results of these steps will be presented in graphs. The anchorage used is active-passive, implying a greater loss of protension, however facilitating execution. The results obtained through the routine are compared and analyzed with the numerical examples