BRANDONISIO, GIUSEPPE1; MAZZIOTTI, ALESSANDRA2; LUCIBELLO, GIUSEPPE3; MELE, ELENA4; DE LUCA, ANTONELLO5

1) Assistant Professor, University of Naples “Federico II”, Department of Structures for Engineering and Architecture (Di.St.), giuseppe.brandonisio@unina.it

2) Ph. D. Student, University of Naples “Federico II”, Department of Structures for Engineering and Architecture (Di.St.), alessandra.mazziotti@unina.it

3) Structural Engineer, Foster and Partners, glucibel@fosterandpartners.com

4) Professor, University of Naples “Federico II”, Department of Structures for Engineering and Architecture (Di.St.), elenmele@unina.it

The paper deals with the problem of evaluating the in-plane seismic capacity of unreinforced masonry structures. These evaluations have been obtained by means of two different approaches: limit analysis and non-linear static analysis (Pushover), applied to four case studies of typical Italian multi-storey masonry buildings

The Pushover analyses were performed by using three different structural softwares: Tremuri and 3DMacro, the most common commercially used software, and Abaqus, more generally used for research purposes. With reference to the main façade of the building case studies, the comparison is provided in terms of horizontal strength, horizontal top displacement and collapse mechanism.

The aim of this study is both to verify advantages and disadvantages of the different modelling examined and to point to limitations in the structural commercial software on the market at present.

Keywords: pushover analysis, limit analysis, masonry walls, masonry building, seismic vulnerability