Our obsession with curvature in RC beam modelling
Date
2011
Authors
Oehlers, D.
Haskett, M.
Mohamed Sadakkathulla, M.
Lucas, W.
Muhamad, R.
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Journal article
Citation
Advances in Structural Engineering: an international journal, 2011; 14(3):391-404
Statement of Responsibility
Deric John Oehlers, Matthew Haskett, Mohamed Ali M.S., Wade Lucas and Rahimah Muhamad
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Abstract
Much of the early research in reinforced concrete dealt with steel reinforcement that was both ductile and had a very strong bond with the concrete. Hence partial-interaction, that is slip between the reinforcement and concrete and subsequently debonding, has not been a major issue. This has allowed researchers to develop the two-dimensional full-interaction moment-curvature approach to model the three-dimensional behaviour of reinforced concrete. It is shown in this paper that this two-dimensional full-interaction moment-curvature approach relies on a large amount of empirical calibration to ensure a safe design. Furthermore, it is shown that a three-dimensional partial-interaction moment-rotation approach can lead to more advanced structural mechanics models of reinforced concrete behaviours and subsequently better accuracy and more versatile models.
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