Modelling the seismic response of a 2-storey URM benchmark case study: comparison among different equivalent frame models

Abstract The paper presents the comparison of results non-linear static analyses performed with different software based on equivalent frame (EF) modelling approach a simple two-story unreinforced masonry building rigid diaphragms. This study is part wider research activity carried out in framework Italian Network Seismic Laboratories (ReLUIS) projects, funded by Department Civil Protection. Different configurations have been considered varying layout openings bearing walls and structural details. EF models defined adopting as much possible common assumptions, order to reduce epistemic uncertainties facilitate interpretation differences obtained software. involved aspects: global scale response, terms capacity curves, predicted damage pattern well checks at local scale, distribution generalized forces. Moreover, assess reliability results, numerical predictions compared an analytical upper bound reference solution. Finally, sensitivity response criterion adopted for idealization has investigated.