Seismic numerical investigation on historical centres compounds: a new modelling technique of structural units
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Historical centres are often constituted of a series of masonry building compounds very vulnerable to earthquakes, whose static non-linear behaviour is not predicted by building codes. This paper propose a simplified modelling approach to predict the seismic response of structural units into masonry building compounds. This approach is based on the equivalent frame method modelling, a technique easy to be implemented within finite element method calculation programs. The modelling technique has been applied to investigate constructions representative of Southern Italy building aggregates erected during the past decades. Firstly, the whole aggregates have been modelled and analysed in order to evaluate the seismic behaviour of structural units having intermediate, heading and corner positions. Later on, the seismic response of these structural units has been assessed by modelling the single units as isolated structures with appropriate boundary conditions to consider, in a simplified way, their position in the aggregate and, therefore, the influence of other constructions. Finally, comparison of the achieved results has been carried out in order to confirm the effectiveness of the proposed analysis approach.
KeywordsHistorical centres Masonry building aggregates Equivalent frame method Pushover analysis Simplified modelling
- 6.Formisano A, Mazzolani FM, Florio G, Landolfo R (2010) A quick methodology for seismic vulnerability assessment of historical masonry aggregates. In: COST ACTION C26: urban habitat constructions under catastrophic events—proceedings of the final conference, pp 577–582Google Scholar
- 9.Formisano A, Castaldo C, Mazzolani FM (2013) Non-linear analysis of masonry building compounds: a comparison of numerical and theoretical results. In: Proc. 14th int. conf. on civil, structural and environmental engineering computing, civil-comp proceedings, p 102Google Scholar
- 16.Bartoli G, Betti M, Biagini P, Borghini A, Ciavattone A, Girardi M, Lancioni G, Marra AM, Ortolani B, Pintucchi B, Salvatori L (2017) Epistemic uncertainties in structural modelling: a blind benchmark for seismic assessment of slender masonry towers. ASCE’s J Perform Constr Facil 31(5):04017067-1–04017067-18Google Scholar
- 24.Computer and Structures, Inc. (CSI) (2014) SAP2000 v17.3.0 structural analysis program. BerkeleyGoogle Scholar