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Title: | Numerical Analysis of the Structural Resistance and Stability of Masonry Walls with an AAC Thermal Break Layer | Authors: | DEYAZADA, Mohammed DEGEE, Herve VANDOREN, Bram |
Issue Date: | 2021 | Publisher: | MDPI | Source: | Sustainability (Basel), 13 (21) (Art N° 11647) | Abstract: | Since energy efficiency has become the main priority in the design of buildings, loadbearing 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. | Keywords: | AAC;composite masonry;load-bearing resistance;mesoscopic finite element model | Document URI: | http://hdl.handle.net/1942/35717 | e-ISSN: | 2071-1050 | DOI: | 10.3390/su132111647 | ISI #: | 000718446800001 | Rights: | 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2022 |
Appears in Collections: | Research publications |
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sustainability-13-11647.pdf | Published version | 7.02 MB | Adobe PDF | View/Open |
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