1 Associate Professor, University of Pavia, Department of Civil Engineering and Architecture and European Centre for Training and Research in Earthquake Engineering (EUCENTRE), Pavia, Italy, guido.magenes@unipv.it
2 Assistant Professor, University of Pavia, Department of Civil Engineering and Architecture and EUCENTRE, Pavia, Italy, andrea.penna@unipv.it
3 Post-doctoral fellow, Department of Civil Engineering and Architecture, University of Pavia, Pavia, Italy, isenaldi@roseschool.it
4 Post-doctoral researcher, Department of Civil Engineering and Architecture, University of Pavia, Pavia, Italy, alessandro.galasco@eucentre.it
5 Researcher, EUCENTRE, Pavia, Italy, maria.rota@eucentre.it
ABSTRACT
The influence of the in-plane stiffness of horizontal diaphragms on the global seismic response of masonry buildings is widely recognised as an important issue, which needs to be investigated considering both the scarce availability of experimental data and the capabilities of nonlinear modelling techniques for the analysis of masonry buildings. An experimental program was recently carried out at the EUCENTRE (Italy) aimed at studying the seismic response of double-leaf stone masonry buildings with timber floor and roof in which different levels of strengthening interventions improving diaphragm stiffness and diaphragm-to-wall connections were simulated. Based on the results obtained from experimental shaking table tests, a first series of numerical simulations have been carried out in order to explore the possibility of reproducing the seismic behaviour of the strengthened prototype buildings by means of simplified nonlinear models.
KEYWORDS: masonry buildings, diaphragm stiffness, seismic response, strengthening techniques, nonlinear modelling
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