PSI - Issue 44

Elena Michelini et al. / Procedia Structural Integrity 44 (2023) 1530–1537 Elena Michelini et al / Structural Integrity Procedia 00 (2022) 000 – 000

1537

8

6. Conclusions This work discusses the application of AVT and OMA techniques for the identification of the dynamic properties of Borgo Val di Taro Town Hall palace. The collected data were used for the calibration of a FE model that simulates the dynamic behavior of the structure. The paper briefly illustrates the tuning procedure, which is based on the variation of the masonry elastic modulus. The obtained results highlight a good agreement between numerical and experimental results both in terms of modal shapes and natural frequencies. Further research will be devoted to study the influence of the load distribution and of the existing crack pattern on the numerical response of the building. Acknowledgements This work was funded by the Emilia-Romagna Regional Agency for Land Security and Civil Protection, which is gratefully acknowledged. The Authors wish also to acknowledge Eng. E, Dellapina, Head of Technical Office of the Municipality of Borgo Val di Taro, for his availability and valuable help during on-site surveys, and Engs. L. Griggio and C. Tuzza of CSPFEA for their help with the software package. References Acunzo G., Fiorini N., Mori F., Spina D., 2018. Modal mass estimation from ambient vibrations measurement: A method for civil buildings, Mech Sys Signal Process 98 , pp 580-593. Asteris, P. G., Chronopoulos, M. P., Chrysostomou, C. Z., Varum, H., Plevris, V., Kyriakides, N., Silva, V. 2014. Seismic vulnerability assessment of historical masonry structural systems. Eng Struct 62, 118-134. Binda, L., Saisi, A., Tiraboschi, C., 2000. Investigation procedures for the diagnosis of historic masonries. Constr Build Mater 14(4), 199-233. Brincker, R., Zhang, L., Andersen, P., 2001. Modal identification of output-only systems using frequency domain decomposition. Smart Mater Struct 10(3), 441. Circolare n.7, 2019. Instructions for the application of “Aggiornamento delle Norme Tecniche per le Costruzioni” (in Italian). Clementi, F., Pierdicca, A., Formisano, A., Catinari, F., Lenci, S., 2017. Numerical model upgrading of a historical masonry building damaged during the 2016 Italian earthquakes: the case study of the Podestà palace in Montelupone (Italy). J Civ Struct Health Monit 7(5), 703-717. De Stefano, A., Matta, E., Clemente, P., 2016. Structural health monitoring of historical heritage in Italy: some relevant experiences. J Civ Struct Health Monit 6(1), 83-106. Ewins D.J., 2000. Modal Testing: Theory, practice and application (second edition). UK: Research Studies Press. Farrar, C. R., & Worden, K., 2007. An introduction to structural health monitoring. Philos Trans AMat Phys Eng Sci 365(1851), 303-315. Fiorini, N., Acunzo, G., Spina, D., Falzone, G., 2021. Structural Health Assessment of Historical Buildings via Ambient Vibrations: The SMAV Methodology for “Palazzo delle Laudi” at Sansepolcro (AR). Int J Archit Heritage 15(4), 593-607. Gentile, C., Saisi, A., Cabboi, A. 2015. Structural identification of a masonry tower based on OMA. Int J Arch Heritage 9(2), 98-110. Midas FEANX, 2020. Analysis Manual. Miraglia, G., Lenticchia, E., Ceravolo, R., Betti, R., 2019. Synergistic and combinatorial optimization of finite element models for monitored buildings. Struct Control and Health Monitoring 26(9), 1-22. Miraglia, G., Lenticchia, E., Surace, C., Ceravolo, R., 2020. Seismic damage identification by fitting the nonlinear and hysteretic dynamic response of monitored buildings. J of Civ Struct Health Monitoring 10(3), 457-469. Peeters B., Van der Auweraer H., 2005. PolyMAX: a revolution in operational analysis, Proceedings of the 1st IOMAC, Copenhagen, pp. 25-26 Peeters, B., De Roeck, G., 2001. Stochastic system identification for operational modal analysis: a review. J Dyn Syst Meas Contr 123(4), 659-667. Pierdicca, A., Clementi, F., Isidori, D., Concettoni, E., Cristalli, C., Lenci, S., 2016. Numerical model upgrading of a historical masonry palace monitored with a wireless sensor network. Int J Mason Res Innov 1(1), 74-98. Ramos, L. F., Marques, L., Lourenço, P. B., De Roeck, G., Campos-Costa, A., Roque, J., 2010. Monitoring historical masonry structures with operational modal analysis: two case studies. Mech Syst Signal Process 24(5), 1291-1305. Salawu, O.S., 1997. Detection of structural damage through changes in frequency: a review Eng Struct 19(9) 718-723. Shimpi, V., Sivasubramanian, M. V., Singh, S. B., 2019. System identification of heritage structures through AVT and OMA: A review. Struct Durab Health Monit 13(1), 1. Sohn H., 2007. Effects of environmental and operational variability on SHM. Philos Trans A Mat Phys Eng Sci 365(1851) 539-560. Moro, L., 2007. Guidelines for evaluation and mitigation of seismic-risk to cultural heritage. Gangemi Eds, Rome, Italy. NTC 2018. Aggiornamento delle “Norme Tecniche per le Costruzioni” (in Italian). DM 17/01/2018, in G.U.R.I. n. 42.