Assessment of macro models of masonry infilled RC frames with opening

Abstract

This study aims to investigate the behavior of masonry infilled reinforced concrete structures in the presence of central windows and doors under lateral seismic loading through macro-modeling simulations. The primary objective is to assess and evaluate three macro models, including the multiple equivalent strut method, discretized macro element method, and reduction factor method, in the seismic performance evaluation of masonry-infilled RC frames with central window and door openings. To achieve this, a nonlinear push-over analysis will be conducted using the software SAP 2000. The results were compared with a recent experimental study on a single-story, on-bay masonry-infilled RC frame with central window and door openings. From the comparison of the initial stiffness, the reduction factor method fits well with the masonry-infilled RC frame with the window and door opening. In terms of lateral strength, the discretized macro element method provides the best agreement.