Floor acceleration demand in reinforced concrete frame structures with masonry infill walls

This study deals with the assessment of floor acceleration demands on reinforced concrete moment-resisting frames (RCFs) representative of typical building inventory in Italy. Floor acceleration can be used to estimate damage to nonstructural components. To this purpose we have considered 2-, 4-, 6- and 10-story concrete frame buildings with regular plan and stiffness and mass distributions along the height and designed for different base shear values. For each height we modeled three different frame/wall configurations: bare frame, frame with masonry infill walls at all stories, and frame with infill walls at all stories but ground level. In this article we have examined under what circumstances the presence of infill walls influences the peak and spectral floor acceleration demands along the height of these concrete frame buildings.