Effect of Masonry Infill Constitutive Law on the Global Response of Infilled RC Buildings

Masonry-infilled reinforced concrete frames represent a very common construction typology across the Mediterranean countries. The presence of infills substantially modifies global seismic performances buildings in terms strength, stiffness, and energy dissipation. Although several research studies focused on overall infilled frames, modeling infill panels remains an open issue due to complex interaction between frame uncertainties involved definition problem. In present paper, existing masonry-infilled RC designed according obsolete codes is chosen as case study. A refined three-dimensional finite element model built for performing nonlinear static time-history analyses order investigate some significant aspects related infills. particular, it investigated effect different constitutive models performance building expressed engineering demand parameters such interstory drift ratios peak floor accelerations, generation damage fragility curves.