A protensão como um conjunto de cargas concentradas equivalentes. / Prestressing as equivalent concentrated loads group.

AUTOR(ES)

Marcelo Menegatti

DATA DE PUBLICAÇÃO

2005

RESUMO

This work is a study about the representation of the prestressing through a CELG (Concentrated Equivalent Loads Group) in order to determine the internal forces and displacements in prestressed structures, due to prestressing. This study considers the concept of prestressing, deviation forces and immediate loss of prestressing. Furthermore some alternative methods to determine forces of prestressing are discussed including the case of hiperestatic structures e.g. initial forces and equivalent distributed loads. Next, the studied algorithm is discussed - CELG, (also known as Variable Force Method), its advantages and uses. Finally the use and precision of CELG is compared to some of the most traditional methods quoted beforehand and also its advantages and disadvantages.

ASSUNTO(S)

cálculo de estruturas cargas equivalentes de protensão concrete structures prestressing structures algoritmo computacional de cálculo computational algorithm estruturas de concreto protendido equivalent loads post-tensioning

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