Ponencia
Numerical modeling for the rebar bond behaviour in normal and high strength concrete
Autor/es | Varona, F. Borja
Navarro, Miguel Baeza, F. Javier Ivorra, Salvador |
Fecha de publicación | 2015 |
Fecha de depósito | 2016-02-22 |
Publicado en |
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ISBN/ISSN | 978-84-606-9356-7 |
Resumen | This paper presents a finite element model for the analysis of the bond behavior between steel rebars and concrete. This behavior is defined by the bond vs. slip curve in European standards (e.g. the CEB- 90) for normal ... This paper presents a finite element model for the analysis of the bond behavior between steel rebars and concrete. This behavior is defined by the bond vs. slip curve in European standards (e.g. the CEB- 90) for normal strength concrete (NSC). Pull-out tests have been performed on both NSC and high strength concrete (HSC) specimens and the resulting curves are compared to numerical models implemented in a FEM software. In these models the contact behavior has been defined according to the Model Code CEB-2010 and a position controlled loading has been performed in order to trace the load-slip curve for comparison with experiments. The FEM model has been calibrated with basic mechanical parameters from both types of concrete (compressive and tensile stress, elastic moduli). The numerical modelling has proven suitable for the NSC bond behaviour. However, the CEB standard should be improved to account for the HSC bond behaviour. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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CMMoST 2015_Varona_Numerical.pdf | 1.184Mb | [PDF] | Ver/ | |