Numerical Analysis of the Structural Resistance and Stability of Masonry Walls with an AAC Thermal Break Layer

Since energy efficiency has become the main priority in the design of buildings, load-bearing walls in modern masonry constructions nowadays include thermal break elements at the floor–wall junction to mitigate thermal bridges. The structural stability of these bearing walls is consequently affected...

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Autores principales:	Mohammed Deyazada, Hervé Degée, Bram Vandoren
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	AAC composite masonry load-bearing resistance mesoscopic finite element model Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/c01d43ad42e040429edeae9afa9b0b59
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spelling	oai:doaj.org-article:c01d43ad42e040429edeae9afa9b0b592021-11-11T19:23:52ZNumerical Analysis of the Structural Resistance and Stability of Masonry Walls with an AAC Thermal Break Layer10.3390/su1321116472071-1050https://doaj.org/article/c01d43ad42e040429edeae9afa9b0b592021-10-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/21/11647https://doaj.org/toc/2071-1050Since energy efficiency has become the main priority in the design of buildings, load-bearing walls in modern masonry constructions nowadays include thermal break elements at the floor–wall junction to mitigate thermal bridges. The structural stability of these bearing walls is consequently affected. In the present paper, a numerical study of the resistance and stability of such composite masonry walls, including AAC thermal break layers, is presented. A finite element mesoscopic model is successfully calibrated with respect to recent experimental results at small and medium scale, in terms of resistance and stiffness under vertical load with or without eccentricity. The model is then used to extend the numerical models to larger-scale masonry walls made of composite masonry, with the aim of investigating the consequences of thermal elements on global resistance and stability. The results confirm that the resistance of composite walls is governed by the masonry layer with the lowest resistance value, except for walls with very large slenderness and loaded eccentrically: composite walls with low slenderness or loaded by a vertical load with limited eccentricities are failing due to the crushing of the AAC layer, while the walls characterized by large slenderness ratios and loaded eccentrically tend to experience buckling failure in the main clay masonry layer.Mohammed DeyazadaHervé DegéeBram VandorenMDPI AGarticleAACcomposite masonryload-bearing resistancemesoscopic finite element modelEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 11647, p 11647 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	AAC composite masonry load-bearing resistance mesoscopic finite element model Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	AAC composite masonry load-bearing resistance mesoscopic finite element model Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Mohammed Deyazada Hervé Degée Bram Vandoren Numerical Analysis of the Structural Resistance and Stability of Masonry Walls with an AAC Thermal Break Layer
description	Since energy efficiency has become the main priority in the design of buildings, load-bearing walls in modern masonry constructions nowadays include thermal break elements at the floor–wall junction to mitigate thermal bridges. The structural stability of these bearing walls is consequently affected. In the present paper, a numerical study of the resistance and stability of such composite masonry walls, including AAC thermal break layers, is presented. A finite element mesoscopic model is successfully calibrated with respect to recent experimental results at small and medium scale, in terms of resistance and stiffness under vertical load with or without eccentricity. The model is then used to extend the numerical models to larger-scale masonry walls made of composite masonry, with the aim of investigating the consequences of thermal elements on global resistance and stability. The results confirm that the resistance of composite walls is governed by the masonry layer with the lowest resistance value, except for walls with very large slenderness and loaded eccentrically: composite walls with low slenderness or loaded by a vertical load with limited eccentricities are failing due to the crushing of the AAC layer, while the walls characterized by large slenderness ratios and loaded eccentrically tend to experience buckling failure in the main clay masonry layer.
format	article
author	Mohammed Deyazada Hervé Degée Bram Vandoren
author_facet	Mohammed Deyazada Hervé Degée Bram Vandoren
author_sort	Mohammed Deyazada
title	Numerical Analysis of the Structural Resistance and Stability of Masonry Walls with an AAC Thermal Break Layer
title_short	Numerical Analysis of the Structural Resistance and Stability of Masonry Walls with an AAC Thermal Break Layer
title_full	Numerical Analysis of the Structural Resistance and Stability of Masonry Walls with an AAC Thermal Break Layer
title_fullStr	Numerical Analysis of the Structural Resistance and Stability of Masonry Walls with an AAC Thermal Break Layer
title_full_unstemmed	Numerical Analysis of the Structural Resistance and Stability of Masonry Walls with an AAC Thermal Break Layer
title_sort	numerical analysis of the structural resistance and stability of masonry walls with an aac thermal break layer
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c01d43ad42e040429edeae9afa9b0b59
work_keys_str_mv	AT mohammeddeyazada numericalanalysisofthestructuralresistanceandstabilityofmasonrywallswithanaacthermalbreaklayer AT hervedegee numericalanalysisofthestructuralresistanceandstabilityofmasonrywallswithanaacthermalbreaklayer AT bramvandoren numericalanalysisofthestructuralresistanceandstabilityofmasonrywallswithanaacthermalbreaklayer
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Numerical Analysis of the Structural Resistance and Stability of Masonry Walls with an AAC Thermal Break Layer

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