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Computational modeling of structural masonry shear walls considering cracking effects at mortar joints

This study presents a computational model to analyze structural masonry shear walls behavior considering the effects of mortar joint cracking on loss of stiffness. The simplified equivalent frame model was used but including link elements between the frame node to simulate the effects of cracking. T...

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Bibliographic Details
Published in:Revista IBRACON de estruturas e materiais 2023, Vol.16 (4)
Main Authors: Oliveira, Nicole Nahara Souza de, Nascimento Neto, Joel Araújo do, Parsekian, Guilherme Aris
Format: Article
Language:eng ; por
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Summary:This study presents a computational model to analyze structural masonry shear walls behavior considering the effects of mortar joint cracking on loss of stiffness. The simplified equivalent frame model was used but including link elements between the frame node to simulate the effects of cracking. The analyses were conducted using the SAP2000 computer program and consisted of modeling four shear walls on a 1/3 scale which were experimentally assessed. The results indicated that the proposed computational modeling approach consistently reproduced the effects of cracking at mortar joints, accurately simulating the nonlinear behavior of masonry. Resumo: O presente trabalho consistiu na elaboração de um modelo computacional para avaliar o comportamento de paredes de contraventamento de alvenaria estrutural de blocos considerando-se os efeitos da fissuração das juntas de argamassa na perda de rigidez. Com esse intuito foi utilizado o modelo simplificado de barras equivalentes, incluindo-se elementos de ligação entre as barras para simular numericamente os efeitos da fissuração. As análises foram realizadas utilizando-se o programa computacional SAP2000 e consistiram na modelagem de quatro paredes de contraventamento na escala 1/3 que foram ensaiadas experimentalmente. Os resultados indicaram que a modelagem computacional idealizada reproduziu de forma consistente os efeitos da fissuração na junta de argamassa, simulando adequadamente o comportamento não linear da alvenaria.
ISSN:1983-4195
1983-4195
DOI:10.1590/s1983-41952023000400010