In-plane Behaviour of an Iron-Framed Masonry Façade: Comparison between Different Modelling Strategies

== Abstract ==

The ‘baraccato’ system is a construction technique with genius earthquake resilient features, used for the reconstruction of the historical city centres in the South of Italy after the catastrophic events occurred in the 18th-19th centuries. A very interesting example of such a building typology is represented by the Church of Santa Maria Maddalena, located in the municipality of Casamicciola Terme of the Ischia Island and built in 1896, after the catastrophic earthquake of 1883. The church is characterized by a mixed ‘baraccato’ system mainly made of yellow tuff block masonry walls strengthened by iron profiles or wooden elements. The reduced damage suffered by the church after the seismic event of 21st August 2017 evidenced the good behaviour of such a mixed structural system, especially into avoiding out-of-plane mechanisms. The presence of the iron-framed system is even more challenging in the definition of the modelling strategies for the structural analysis of the church. Thus, the choice of an appropriate numerical strategy to be used for nonlinear simulation should be properly investigated since the interaction between the frame elements and the elements representing the masonry walls has to be considered. As a first step of the structural analysis of the whole church, the in-plane behaviour of the main façade of the Church of Santa Maria Maddalena is analysed in this paper, with the aim to evaluate the efficacy of different modelling strategies. In particular, the study considers different models according to Finite and Discrete Element strategies available within DIANA FEA [1] and 3DMacro [2] software, respectively. Non-linear static analyses are carried out by means of both software and the obtained results are compared and discussed with the aim of extending them to the study of the whole church.

== Full document ==
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== References ==

[1] DIANA FEA BV. Diana user’s manual, Release 10.3, (2019). 

[2] Gruppo sismica S.r.l. 3DMacro. Il software per le murature (3D computer program for the seismic assessment of masonry buildings). Technical report, (2019). 

[3] Ruggieri, N. The Borbone "Istruzioni per gli Ingegnieri": a historical code for earthquake resistant constructions. Int. J. Archit. Herit. (2017) 11(2):292-304. 

[4] França, J.A. A reconstrução de Lisboa ea arquitectura Pombalina. Instituto de cultura  portuguesa, (1978). 

[5] Hicyilmaz, K.M.O., Wilcock, T., Izatt, C., da Silva, J. and Langenbach, R. Seismic  performance of Dhajji Dewari. In: 15th World Conference on Earthquake Engineering, Sociedade Portuguesa de Engenharia Sismica (SPES), (2012), pp. 24-28. 

[6] Cobancaoglu, T. Himis’ construction system in traditional Turkish wooden houses. In: P.B.  Lourenço and P. Roca (Eds.): Structural Analysis of Historical Constructions (SAHC  2001), (2001), pp. 799-810. 

[7] Kouris, L.A.S. and Kappos, A.J. Detailed and simplified non-linear models for timber framed masonry structures. J. Cult. Herit. (2012) 13(1):47-58. 

[8] Cantelmi, F. Un sistema costruttivo antisismico: la casa baraccata. Geopunto (2017) 74:8-12. 

[9] Galassi, S., Ruggieri, N. and Tempesta G. Seismic performance evaluation of timber framed masonry walls experimental tests and numerical modelling. In: N. Ruggieri et al. (Eds.): Historic Earthquake-Resistant Timber Frames in the Mediterranean Area, Springer (2015), pp. 99-103. 

[10]Casapulla, C., Ceroni, F., Rainieri, C., Argiento, L.U., Arcamone, P. and Fabbrocino, G. Structural assessment of Santa Maria Maddalena church in Ischia (Italy) by experimental modal analysis under operational conditions. In: M. Papadrakakis and M. Fragiadakis (Eds.): Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2019), ECCOMAS Bookseries (2019), pp. 1-14. 

[11]Di Napoli, B. Modelling and safety assessment of the Santa Maria Maddalena Church,  Ischia, Italy. Msc. Thesis, Universidade do Minho, Portugal, (2019). 

[12]Ceroni, F., Pecce, M., Voto, S. and Manfredi, G. Historical, architectural and structural assessment of the Bell Tower of Santa Maria del Carmine, International Journal of Architectural Heritage: Conservation, Analysis, and Restoration, Francis Taylor, Vol. 3, Issue 3, (2009), pp. 169-194. 

[13]Brussel, M.N. Appraisal of existing iron and steel structures. The Steel Construction  Institute, Ascot -Berkshire, (1998). 

[14]Ministero delle Infrastrutture e dei Trasporti. NTC 2018 - Norme Tecniche per le  Costruzioni di cui al D.M. 17/ 01/2018. Italy: Gazzetta Ufficiale N. 42 del 20/02/2018 (2018). (in Italian) 

[15]Celano, T., Argiento, L.U., Ceroni, F. and Casapulla, C. In-plane behavior of iron-framed  masonry panels: numerical analyses. In: T.P. Tasios et al. (Eds.): 4th International Conference on Protection of Historical Constructions (PROHITECH 2020), (2020). 

[16]Caddemi, S., Caliò, I., Cannizzaro F. and Pantò, B. New Frontiers on Seismic Modeling  of Masonry Structures” Frontiers in Built Environment (2017) 3, 39. 

[17]Lourenço, P.B. Structural masonry analysis: Recent developments and prospects. In: M.  Masi et al. (Eds.): Proceedings of the 14th International Brick &amp; Block Masonry Conference, University of Newcastle (2008), pp. 1341–56. 

[18]Caliò, I., Marletta, M. and Pantò, B. A new discrete element model for the evaluation of  the seismic behaviour of the unreinforced masonry builings. Eng. Struct. (2012) 40:327-338. 

[19]Chácara, C., Lourenço, P.B., Pantò, B., Cannizzaro, F. and Caliò, I. Parametric numerical  studies on the dynamic response of unreinforced masonry structures. In: K. Van Balen and E. Verstrynge (Eds.): Structural Analysis of Historical Constructions (SAHC 2016), CRC Press (2016), pp. 239-245. 

[20]Caliò, I. and Pantò, B. A macro-element modelling approach of Infilled Frame Structures. Comput. Struct. (2014) 143: 91-107. 

[21]Pantò, B., Caliò, I. and Lourenço, P. B. A 3D discrete macro-element for modelling the out-of-plane behaviour of infilled frame structures. Eng. Struct. (2018) 175: 371-385. 

[22]Pantò, B., Silva, L., Vasconcelos, G. and Lourenço, P. B. Macro-modelling approach for assessment of out-of-plane behavior of brick masonry infill walls. Eng. Struct. (2019) 181: 529-549.