Análisis Numérico de la Rigidez de Vigas Compuestas en Sección T de Hormigón y Madera Laminada Encolada en Régimen Elástico Lineal
DOI:
https://doi.org/10.66104/cjp37k13Palabras clave:
Vigas compuestas, Madera laminada encolada (MLE), Hormigón, AbaqusResumen
Este estudio presenta, de manera sistemática y didáctica, el desarrollo y la validación de un modelo numérico tridimensional en régimen elástico lineal para vigas mixtas madera–concreto en sección T, implementado en el software Abaqus. La madera laminada encolada fue modelada como material ortotrópico tridimensional, con definición explícita de las constantes elásticas en las direcciones longitudinal, radial y tangencial, así como la adecuada transformación tensorial al sistema global de la estructura. El concreto fue representado como material isotrópico homogéneo en el rango elástico previo a la fisuración. El modelo numérico fue calibrado y validado a partir de resultados experimentales disponibles en la literatura, considerando el tramo lineal de la curva carga–desplazamiento hasta 100 kN, intervalo en el cual no se observaron fenómenos de plasticidad, fisuración significativa ni degradación de la interfaz. Posteriormente, se realizó un análisis comparativo mediante la sustitución de la especie de madera y la clase de concreto, con el objetivo de evaluar su influencia en la rigidez global del sistema compuesto. Los resultados demuestran que la rigidez inicial de la viga mixta está predominantemente gobernada por el módulo de elasticidad longitudinal de la madera, mientras que el incremento de la clase del concreto produce efectos relativamente limitados en el régimen elástico. El estudio resalta la importancia de una modelación adecuada del comportamiento ortotrópico y evidencia el potencial de las especies madereras brasileñas en sistemas estructurales híbridos madera–concreto.
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Derechos de autor 2026 Sidnei Marcondes de Jesus, Guilherme Santos da Silveira da Silveira, Gustavo de Miranda Saleme Gidrão, Rúbia Mara Bosse, Rodrigo Scoczynski Ribeiro, Rodrigo de Souza Nogueira
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