Seismic assessment of unreinforced masonry structures: a coupled mesoscale-DMEM approach

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Seismic assessment of unreinforced masonry structures: a coupled mesoscale-DMEM approach
Conference
3ECEES - 3rd European Conference on Earthquake Engineering & Seismology
Title
Seismic assessment of unreinforced masonry structures: a coupled mesoscale-DMEM approach
Authors
F. Vadalà, V. Cusmano, S. Szabó, L. C. Silva, M. F. Funari, I. Caliò, P. B. Lourenço
Date
September 26, 2022
Highlights
  • Mesoscale representation
  • Irregular masonry pattern
  • Discrete Macro-Element Method (DMEM)
ABSTRACT

In this paper, numerical investigations are performed to investigate the potential of
the discrete macro-element coupled with the mesoscale approach for the seismic assessment
of unreinforced masonry structures. At first, parametric analyses are performed on a U-shape
masonry prototype made with stone. Nonlinear static analyses are performed to investigate
parameters that affect the results when a mesoscale masonry pattern representation is adopted.
Results demonstrate how mesoscale representation is a powerful alternative to model
unreinforced masonry structures within a discrete macro-element approach and highlight how
irregularity of units can affect the structural response leading to a reduction in terms of
strength and ductility if compared to the regular and periodic distribution of masonry units.