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Earthquakes and Structures Volume 12, Number 2, February 2017 , pages 223-236 DOI: https://doi.org/10.12989/eas.2017.12.2.223 |
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Non-linear modeling of masonry churches through a discrete macro-element approach |
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Bartolomeo Pantò, Linda Giresini, Mauro Sassu and Ivo Caliò
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| Abstract | ||
| Seismic assessment and rehabilitation of Monumental Buildings constitute an important issue in many regions around the world to preserve cultural heritage. On the contrary, many recent earthquakes have demonstrated the high vulnerability of this type of structures. The high nonlinear masonry behaviour requires ad hoc refined finite element numerical models, whose complexity and computational costs are generally unsuitable for practical applications. For these reasons, several authors proposed simplified numerical strategies to be used in engineering practice. However, most of these alternative methods are oversimplified being based on the assumption of in-plane behaviour of masonry walls. Moreover, they cannot be used for modelling the monumental structures for which the interaction between plane and out-plane behaviour governs the structural response. Recently, an innovative discrete-modelling approach for the simulation of both in-plane and out of-plane response of masonry structures was proposed and applied to study several typologies of historic structures. In this paper the latter model is applied with reference to a real case study, and numerically compared with an advanced finite element modelling. The method is applied to the St.Venerio church in Reggiolo (Italy), damaged during the 2012 Emilia-Romagna earthquake and numerically investigated in the literature. | ||
| Key Words | ||
| cultural heritage; monumental; structures; masonry churches; macro-element approach; discrete element approach; non-linear finite element model; seismic vulnerability; HiStrA software; ABAQUS software | ||
| Address | ||
| Bartolomeo Pantò,Ivo Caliò: Department of Engineering and Architecture, University of Catania, Viale A. Doria 6 - 95125 Catania, Italy Linda Giresini: Department of Energy Systems Territory and Costruction Engineering, University of Pisa, Largo Lucio Lazzarino - 56122 Pisa, Italy Mauro Sassu: Department of Civil, Environmental Engineering and Architecture, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy | ||