PSI - Issue 64

Corrado Chisari et al. / Procedia Structural Integrity 64 (2024) 199–205 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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4. Conclusions In this paper a parametric analysis on the effect of the main geometrical features on the diaphragm behavior of a gothic masonry cross vault (as a part of a typical church transept) is performed and discussed. The numerical model, which makes use of a strain-based damage material description, is subjected to a monotonic loading condition simulating the relative motion between the central nave and the transept. The results show how the overall diaphragm strength and stiffness of the vault are influenced by the geometrical properties of the vault, including vault and lateral wall thickness, rib characteristics and arch eccentricity.The collapse mode, visualized by the damage contour at the last step, seems in all investigated cases controlled by the shear failure of the supports, differently coupled to damage at vault intrados, ribs, diagonal extrados and vault-wall interface. The outcomes of this analysis are preparatory to the definition of effective, compatible and reversible retrofitting actions for masonry cross vaults, which will be part of future research within the GENESIS project. 5. Acknowledgements The activities described in this paper were carried out within the research project “GENESIS – seismic risk manaGEmeNt for tourist valorization thE hiStorIcal centers of Southern Italy ”, funded by the Italian Ministry of University and Research under the PNR 2015-2020 programme. M.Z. is funded by MUR (Ministry of University and Research) through PON FSE 2014-2020 program (contract: 49-I-32603-3). References Alforno, M., Venuti, F., Monaco, A., Calderini, C., 2022. Seismic behaviour of cross vaults with different brick pattern. Bulletin of Earthquake Engineering 20, 3921-3939. Baraccani, S., Zauli, L., Theodossopoilos, D., Silvestri, S., 2020. Experimental test on a fibre-reinforced scaled cross vault subjected to in-plane shear displacements at the springings. Construction and Building Materials 265, 120305. Bianchini, N., Mendes, N., Calderini, C., Candeias, X, P., Rossi, M., Lounrenço, P. B., 2021. Seismic response of a small-scale masonry groin vault: experimental investigation by performing quasi-static and shake table tests. Bulletin of Earthquake Engineering 20, 1739 – 1765. Bianchini, N., Mendes, N., Calderini, C., Lourenço, P. B., 2023. Modelling of the dynamic response of a reduced scale dry joints groin vault. Journal of Building Engineering 66, 105826. Bianchini, N. M. N., Calderini, C., Candeias, P., Lourenço, P. B., 2023. Shaking Table Testing of an Unstrengthened and Strengthened with Textile Reinforced Mortar (TRM) Full-Scale Masonry Cross Vault. International Journal of Architectural Heritage. Chàcara, C., Pantò, B., Cannizzzaro, F., Rapicavoli, D., Caliò, I., 2023. Numerical Simulation of the Response of an Unreinforced Brick-Masonry Cross Vault Subjected to Seismic Loading. International Journal of Architectural Heritage. Code_Aster, 2023. Structures and Thermomechanics Analysis for Studies and Research. [Online] Available at: https://code-aster.org/ [Accessed 19 January 2023]. D'Altri, A. M., Castellazzi, G., de Miranda, S., Tralli, S., 2017. Seismic-induced damage in historical masonry vaults: A case-study in the 2012 Emilia earthquake-stricken area. Journal of Building Engineering 13, 224-243. De Matteis, G., Zizi, M., 2019. Seismic Damage Prediction of Masonry Churches by a PGA-based Approach. International Journal of Architectural Heritage 13(7), 1165-1179. Geuzaine, C., Remacle, J.-F., 2009. Gmsh: a three-dimensional finite element mesh generator with built-in pre- and post-processing facilities. International Journal of Numerical Methods in Engineering 79, 1309-1331. Gioffré, M., Navarra, G., Cavalagli, N., Iacono, F. L., Gusella, V., Pepi, C., 2023. Effect of hemp bio composite strengthening on masonry barrel vaults damage. Construction and Building Materials 367, 130100. Heyman, J., 1982. The masonry arch. Chichester: Ellis Horwood Ltd. Mazars, J., Hamon, F., Grange, S., 2015. A new 3D damage model for concrete under monotonic, cyclic and dynamic loadings. Mater Struct 48, 3779 – 3793. Ministero delle Infrastrutture e dei Trasporti, 2018. Norme Tecniche per le Costruzioni. Roma: Decreto Ministeriale 17 Gennaio 2018. Oliver, J., Huespe, A., Cante, J., 2008. An implicit/explicit integration scheme to increase computability of non-linear material and contact/friction problems. Computer Methods in Applied Mechanics and Engineering 197, 1865-1889. Roselli, F., Alforno, M., Manuello Bertetto, A., Venuti, F., 2023. Experimental investigation of the effect of brick pattern on the structural response of masonry arches and barrel vaults. Construction and Building Materials 368, 130434. Rouhi, J., Gioia, A., Zizi, M., Chisari, C., De Matteis, G., 2022. Structural features of St. Michele Arcangelo Cathedral in Casertavecchia, Italy: a preliminary investigation. CESARE Conference Publications, Irbid (Jordan).