Resistencia a la compresión paralela en madera laminada encolada de Álamo.
Date
2023
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Abstract
Las nuevas tecnologías de fabricación e industrialización de elementos estructurales de
madera laminada encolada permiten abordar diseños de construcciones civiles de grandes
luces, capaces de competir en prestaciones con las predominantes estructuras de acero.
Dadas las características ortotrópicas de la madera, es importante conocer con exactitud
las propiedades mecánicas del material para comprobar las tensiones que se producen en
cada dirección al aplicar una carga. En el caso de la resistencia a la compresión, la mayor
capacidad se manifiesta en la dirección paralela a la fibra (dirección longitudinal). En este trabajo se determina la resistencia y el módulo de elasticidad paralelo a la fibra en piezas
de madera laminada encolada Populus deltoides cultivada en el delta del río Paraná. Se han
realizado ensayos de compresión sobre 90 probetas, de acuerdo con las prescripciones de la
norma IRAM 9663 (2013). En el Suplemento 2 del CIRSOC 601 (2016), se proponen los valores
de referencia para esta especie con el fin de diseñar estructuras de madera de forma segura
y confiable. Los valores de resistencia a la compresión paralela a la fibra obtenidos en el
percentil 5% resultan mayores que los publicados por Guillaumet et al (2017) en madera ase rrada, y cumplen con la categoría resistente GL24h de la normativa europea UNE-EN14080
(2017).
New technologies for the manufacture and industrialization of glulam timber structural elements make it possible to design large-span civil constructions capable of competing in terms of performance with the predominant steel structures. Given the orthotropic charac teristics of wood, it is important to know the exact mechanical properties of the material in order to check the stresses that occur in each direction when a load is applied. In the case of compressive strength, the greatest capacity is manifested in the direction parallel to the grain (longitudinal direction). In this work, the strength and modulus of elasticity parallel to the grain in pieces of glulam timber Populus deltoides grown in the Paraná River delta are determined. Compression tests were performed on 90 specimens, in accordance with the requirements of IRAM 9663 (2013). In Supplement 2 of CIRSOC 601 (2016), reference values for this species are proposed in order to design timber structures safely and reliably. The values of resistance to compression parallel to grain obtained at the 5% percentile result higher than those published by Guillaumet et al (2017) in sawn timber, and comply with the GL24h resistant category of the European standard UNE-EN14080 (2017).
New technologies for the manufacture and industrialization of glulam timber structural elements make it possible to design large-span civil constructions capable of competing in terms of performance with the predominant steel structures. Given the orthotropic charac teristics of wood, it is important to know the exact mechanical properties of the material in order to check the stresses that occur in each direction when a load is applied. In the case of compressive strength, the greatest capacity is manifested in the direction parallel to the grain (longitudinal direction). In this work, the strength and modulus of elasticity parallel to the grain in pieces of glulam timber Populus deltoides grown in the Paraná River delta are determined. Compression tests were performed on 90 specimens, in accordance with the requirements of IRAM 9663 (2013). In Supplement 2 of CIRSOC 601 (2016), reference values for this species are proposed in order to design timber structures safely and reliably. The values of resistance to compression parallel to grain obtained at the 5% percentile result higher than those published by Guillaumet et al (2017) in sawn timber, and comply with the GL24h resistant category of the European standard UNE-EN14080 (2017).
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Keywords
Caracterización., Álamo., Compresión paralela., Madera laminada encolada., Characterization., Poplar., Parallel compression., Glulam timber.
Citation
Tecnología y Ciencia.
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