The Influence of Bond Deterioration Zone on Tension Stiffening of Flexural Members On Short-Term Deflection
No Thumbnail Available
Date
2019-10
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
The bond between concrete and steel bars is of fundamental importance to
deformation characteristics of cracked concrete structures. It has been studied for
many years. But the results of the studies seem to be inadequate for concrete
structure analysis. They are not reflected in engineering practice and codes. This
affects the load caring capacity and deformational behavior of a beam. Moreover,
the present design trend introduces the use of higher strength concrete and
reinforcement which leads to longer spans and smaller depth of beams, for this case
deformations are often the governing design criteria.
In this study, the impacts of bond degradation on tension stiffening are examined in
an analytical model. A method for calculating short-term deflection is proposed by
considering these impacts. Also available experimental data is assessed which
confirmed the theoretical predictions.
Description
Keywords
tension stiffening, bond deterioration zone, short term deflection