Abstract
This work describes an experimental study on the plastic rotation capacity of high strength beams. Nine simply supported isotatic beams were tested, by applying comprising two symmetrical concentrated loads at approximately one-third and two-third's span. A method of analysis is defined that leads to the development of a parameter that characterizes the plastic rotation capacity at the failure section by means of a plastic analysis of the tested beams. The influence of concrete strength and the longitudinal tensile reinforcement ratio on the capacity for plastic rotation is examined and discussed. The results are discussed and compared with previous studies.
Résumé
Ce travail décrit une étude expérimentale sur la capacité de rotation plastique de poutres en béton à haute résistance. Neuf poutres isostatiques ont été testées avec une charge constituée par deux forces concentrées et symétriques situées environ au tiers et aux deux tiers de la portée. Une méthode d'analyse est définie, conduisant au développement d'un paramètre qui caractérise la capacité de rotation plastique de la section de rupture, utilisant une analyse plastique des poutres testées. L'influence de la résistance du béton et du taux d'armatures longitudinales de traction sur la capacité de rotation plastique est examinée et discutée. Les résultats sont analysés, discutés et comparés avec des études antérieures.
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Lopes, S.M.R., Bernardo, L.F.A. Plastic rotation capacity of high-strength concrete beams. Mat. Struct. 36, 22–31 (2003). https://doi.org/10.1007/BF02481567
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DOI: https://doi.org/10.1007/BF02481567