PSI - Issue 44

N. Buratti et al. / Procedia Structural Integrity 44 (2023) 2128–2135 N. Buratti et al./ Structural Integrity Procedia 00 (2022) 000 – 000

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acquired electrical outputs. Even this monitoring system is connected to the NAS by allowing the further processing of the data from smart bricks via the MOVA/MOSS software. Temperature and relative humidity measurements are also carried out through specific sensors installed on the specimen building. Finally, inside the building, at the tie level, there is a probe measuring temperature and relative humidity. Two couples of 6-mm strain gauges are installed on each tie, measuring strains every 10 minutes. 5. Blind prediction contest In order to tests the damage identification capabilities of the SHM system and the reliability of different types of numerical models, a blind prediction contest has been launched. The following types of damage or variation of the structural system will be induced in the building: - variations of the quality of connection between walls A-C and B (Fig. 2); - variation of the stiffness of the roof floor, through the application of a second layer of timber planks; - partial release of one or more steel ties; - simulated settlement of wall D; - removal of part of the mortar in the horizontal joints of some masonry piers. Modal features and different damage parameters will be estimated during the tests. Researchers are invited to predict the variations in modal frequencies and shapes induced by damage, average strains and displacement in some points of the structure, and damage patterns in the masonry elements. Further details on the blind prediction contest can be found on the site “ https://eventi.unibo.it/detectaging ” . 6. Conclusions This paper has presented the main features of the model building constructed within the DETECT-AGING project, which is being used to investigate the ability of SHM systems to detect non-seismic damage due to degradation, ageing and soil settlements. The paper presented the main features of the construction and the adopted SHM system employing conventional accelerometers and innovative strain-sensing bricks. Before the end of the project, different tests will be carried out on the building by implementing artificial degradation, stiffness variations and soil settlements. The results of the tests will be used to evaluate the accuracy of the predictions of numerical models through a blind prediction contest. Specifically, researchers are invited to predict the variations in terms of modal frequencies and shapes produced by the different forms of damage. Acknowledgements The DETECT-AGING project was funded by the Italian Ministry of University and Research through PRIN: Progetti di Ricerca di Rilevante Interesse Nazionale – Call 2017 – Prot. 201747Y73L. References Augenti, N., Parisi, F., 2010. Learning from construction failures due to the 2009 L’Aquila, Italy, earthquake. ASCE Journ al of Performance of Constructed Facilities 24(6), 536-555. Cattari,S., Degli Abbati, S., Ferretti, D., Lagomarsino, S., Ottonelli, D., Tralli, A. 2012. The seismic behaviour of ancient masonry buildings after the earthquake in Emilia (Italy) on May 20 th and 29 th , 2012, Ingegneria Sismica, 29,2-3,87-119. D’Amato, M., Laguardia, R, Di Trocchio, G., Coltellacci , M. Gigliotti, R., 2020. Seismic Risk Assessment for Masonry Buildings Typologies from L’Aquila 2009 Earthquake Damage Data . Journal of Earthquake Engineering. Dolce, M., Prota, A., Borzi, B., Da porto, F., Lagomarsino, S., Magenes, G., Moroni, C., Penna, A., Polese, M., Speranza, E., Verderame, G. M., Zuccaro, G., 2021. Seismic risk assessment of residential buildings in Italy. Bulletin of Earthquake Engineering 19, 2999-3032. Ferretti, F., Mazzotti, C. Mazzotti, Incerti A., 2020. Experimental and Numerical Studies on the Shear-Sliding Behavior of Clay Brick Masonries. Brick and block masonry: from Historical to sustainable masonry. Proceedings of the 17th International Brick/Block Masonry Conference. Fiorentino, G., Forte, A., Pagano, E., Sabetta F., Baggio C., Lavorato, D., Nuti, C., Santini, S., 2018. Damage patterns in the town of Amatrice after August. Bulletin of Earthquake Engineering 16, 1399-1423. Istituto Nazionale di Statistica (ISTAT). Edifici e Abitazioni. 2014. Available online: https://www.istat.it/it/files//2014/08/Nota-edifici-e abitazioni_rev.pdf. (In Italian).