Appraisal of masonry infill walls dynamic characteristics: An analytical study

• Autor(a) principal: Mohamed, Hossameldeen
• Data de Publicação: 2023
• Outros Autores: Furtado, André, Rodrigues, Hugo
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10773/39855
• topic: Boundary conditions; Detailed numerical modelling; Masonry infill walls; Modal identification; Openings; Out-of-plane behaviour; Wall geometry

Due to the infill masonry high vulnerability observed in recent earthquakes, the knowledge concerning the infills’ out-of-plane seismic behaviour has been the focus of several research works in the last years. The in- plane/out-of-plane interaction, boundary conditions, openings, slenderness, and aspect ratio have been re- ported as the main parameters that affect the out-of-plane infill wall capacity. However, the study of the impact of those parameters on the wall modal properties still needs further investigation. This research aims to perform a numerical study where a detailed numerical strategy is assumed to simulate the infilled reinforced concrete frames. The numerical model is calibrated using results from modal identification tests (wall with and without openings). A parametric study is carried out to assess the effect of wall geometry, slenderness, openings ratio, openings position and boundary conditions on the walls’ out-of-plane frequencies. Eventually, analytical for- mulations were proposed to quantify the dynamic characteristics of the infill wall based on their geometric and mechanical characteristics.