Seismic performance assessment of masonry buildings requires a nonlinear response analysis to achieve a reliable understanding of the possible effects of future earthquakes in terms of damage and losses. Equivalent frame (EF) modelling combined with nonlinear static procedures has been recognized as an efficient tool, which was validated in several studies through both experimental data and post-earthquake damage inspections. In this paper, a new macroelement based on a fibre formulation is implemented into a matrix analysis approach to build up a nonlinear EF model and to perform incremental static (pushover) analysis with response control. For each step of the analysis, the stiffness matrix of the structure is updated using the novel macroelement model, accounting for geometric and mechanical nonlinearities both in terms of flexural and shear behaviour. Floor systems are modelled with truss elements, the stiffness of which can be varied in order to consider either rigid or flexible floors. In addition, the capacity model can simulate different degrees of connection at wall intersections and can easily be adapted to consider structural elements made of reinforced concrete, steel, wood, or other materials. The capacity modelling procedure proposed in this study was first validated by simulating the in-plane lateral behaviour of a full-scale masonry wall with opening, and then, implemented to run pushover analysis of existing masonry buildings representative of those located in the Campania region (southern Italy).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.