Mais informações

ALVIM, R. C.; FUSCO, P. B. Avaliação da rigidez efetiva das vigas de concreto armado. In: CONGRESSO INTERNACIONAL SOBRE O COMPORTAMENTO DE ESTRUTURAS DANIFICADAS, 1998, Rio de Janeiro. Anais... Rio de Janeiro, 1998.
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Abstract

The aim of this paper was to evaluate the bending stiffness of RC beams by static and dynamics tests, in order to obtain a more realistic estimate of the stiffness to be considered in design. From this experimental investigation, reduction stiffness factors were obtained. These factors take into account the effects of cracking of the members and the material nonlinearity. The stiffness of the simple concrete and homogeneous sections, in states I and II, were taken as reference. It was also verified that the obtained reduction factors are approximately equal to those to be considered in the revisions of ACI and NB-1.
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