Abstract
The robustness of reinforced concrete (RC) frame buildings can be influenced by several factors, as highlighted by several experimental tests and numerical simulations. This study wants to investigate the role of infill walls in the progressive collapse resistance of a real RC frame building, which was constructed in the 1950s and suffered a partial progressive collapse during retrofitting works. The structural model, analyzed in a previous study, is further refined by integrating nonlinear fiber-based finite element modelling of frame members with nonlinear macro-element modelling of infill walls. Nonlinear pushdown analysis were performed to assess the effects of infill walls on a realistic structural model that is representative of existing RC frame buildings.
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