Compression performance and bearing capacity calculation model of small-eccentricity columns strengthened with textile-reinforced mortar (TRM)

S. P. Yin; X. Q. Hu; Y. T. Hua

doi:10.3989/mc.2019.08418

Autores/as

S. P. Yin State Key Laboratory for Geomechanics & Deep Underground Engineering, School of Mechanics & Civil Engineering, China University of Mining and Technology https://orcid.org/0000-0001-8304-5914
X. Q. Hu State Key Laboratory for Geomechanics & Deep Underground Engineering, School of Mechanics & Civil Engineering, China University of Mining and Technology https://orcid.org/0000-0002-9902-8585
Y. T. Hua State Key Laboratory for Geomechanics & Deep Underground Engineering, School of Mechanics & Civil Engineering, China University of Mining and Technology https://orcid.org/0000-0001-6248-9807

DOI:

https://doi.org/10.3989/mc.2019.08418

Palabras clave:

Composite, Refuerzo de fibras, Propiedades mecánicas, Modelización

Resumen

En este trabajo se estudió el rendimiento a compresión de columnas reforzadas con TRM con pequeñas excentricidades, y para ello, se sometieron a pruebas de compresión a nueve columnas de hormigón armado (RC) con ménsulas finales. Los parámetros estudiados fueron: el número de capas textiles, la relación de refuerzo longitudinal y la fracción en volumen de fibras cortas de alcohol polivinílico (PVA). Los resultados experimentales indicaron que, en comparación con el control, las columnas con tres capas de textiles mostraron un aumento de aproximadamente el 10,66% en la capacidad de carga. Sin embargo, el aumento fue ligero cuando el número de capas textiles aumentó a cuatro. Además, el efecto mejoró con el aumento en la proporción de refuerzo longitudinal y la fracción en volumen de fibras de PVA. Finalmente, basándonos en las pruebas de laboratorio y resultados de investigación previos, se presentó un modelo para calcular la capacidad de carga de la sección normal de columnas reforzadas con TRM con pequeñas excentricidades. Una comparación de los datos teóricos y experimentales demostró la aplicabilidad del modelo propuesto.

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Citas

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