Confinamiento de columnas de hormigón con FRP: revisión de normativas y sus predicciones
DOI:
https://doi.org/10.3989/mc.2022.03821Palabras clave:
Hormigón, Composite, FRP, Confinamiento, Resistencia a la compresiónResumen
El crecimiento en el uso de polímeros reforzados con fibra (FRP) como sistema de refuerzo externo en columnas de hormigón requiere de un marco regulatorio para su correcto diseño. En los últimos años se han desarrollado diferentes guías y normativas de diseño, teniendo cada una de ellas un planteamiento diferente y, por lo tanto, arrojando resultados dispares. Esta investigación pretende contrastar con resultados experimentales las predicciones que nueve normativas internacionales hacen sobre la resistencia a compresión de una columna de hormigón confinada con FRP. Los resultados de la investigación muestran que las estimaciones de las normativas sobre la resistencia de las columnas de hormigón confinadas con FRP son, en general, adecuadas para columnas circulares; destacan como las más precisas la ACI-440 y la CNR-DT 200. Por contra, en el caso de columnas no circulares los resultados obtenidos tienden a sobreestimar la resistencia a compresión de las columnas confinadas con FRP, en este caso sería necesario continuar investigando en modelos a gran escala.
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