Publicado

2018-01-01

Vigas de madera laminada Glulam reforzadas con pletinas metálicas dentadas

Glulam beams reinforced with punched metal plates

DOI:

https://doi.org/10.15446/dyna.v85n204.67847

Palabras clave:

madera, Glulam, pletinas metálicas dentadas, ensayo de flexión (es)
wood, Glulam, punched metal plates, bending test (en)

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En este artículo se estudian las propiedades mecánicas de vigas de madera laminada Glulam reforzadas con pletinas metálicas dentadas. Se fabricaron y analizaron experimentalmente 2 grupos de vigas: 30 vigas de madera laminada no reforzadas y 30 vigas de madera laminada reforzadas con pletinas metálicas dentadas. Todas las vigas de madera laminada se fabricaron con planchas de Carbonero (Licania campestre) y un adhesivo epóxico de alta resistencia y durabilidad. Se ejecutaron ensayos de flexión de cuatro puntos en las 60 vigas a escala natural. Para determinar las tensiones, se usó un modelo teórico linealmente elástico y se verificaron los resultados experimentales. Se determinó que las vigas de madera laminada reforzadas presentan un mejor comportamiento mecánico que las vigas de madera laminada no reforzadas. Se estableció además que el uso de las pletinas metálicas dentadas aumenta la homogeneidad y la capacidad resistente de las vigas de madera laminada.
This article presents an analysis of the mechanical properties of Glulam beams reinforced with punched metal plates. In this study, two groups of Glulam beams were fabricated and experimentally analyzed: 30 non reinforced Glulam beams and 30 Glulam beams reinforced with punched metal plates. All Glulam beams were made of Carbonero (Licania campestre) and an epoxy adhesive with high strength and durability. Four-point bending tests in the 60 full-scale beams were carried out. Then, a model based on linear elasticity theory was used to calculate the strength and verify the experimental results. It was determined that Glulam beams reinforced with punched metal plates show a better mechanical behavior than non reinforced Glulam beams. It was further established that the use of punched metal plates increases the homogeneity and the mechanical capacity of Glulam beams.

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