Features of reinforced concrete beams stress strain state, damaged under load
Journal Title: Вісник Одеської державної академії будівництва та архітектури - Year 2017, Vol 1, Issue 69
Abstract
The results of experimental research of reinforced concrete beams deformability with damage in tensile reinforcement, at different load levels are presented in this article. The purpose of this study is to investigate the change of the stress-strain state in reinforced concrete beams, with damages performed at different levels of initial loading. According to the investigation program, ten prototypes were tested: four – control and six ‒ damaged. Damage was made locally, drilling a hole step-by-step in the tensile reinforcement. The specimens were damaged at loading levels of 0.3, 0.5 and 0.7 from the carrying capacity of the control prototypes. According to the obtained data, graphs of deformations distribution in the central section are constructed: for compressed concrete, tensile reinforcement and for central cross section by the height. It was found out that the bearing capacity in the control samples is exhausted with the limiting deformations of the compressed concrete zone, and in the damaged specimens – with the limiting deformations of the tensile reinforcement.
Authors and Affiliations
Z. Z. , Blikharskyy, P. I. , Vehera, T. M. , Shnal
Keywords
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