PSI - Issue 44

Ciro Del Vecchio et al. / Procedia Structural Integrity 44 (2023) 1411–1418 Ciro Del Vecchio et al. / Structural Integrity Procedia 00 (2022) 000 – 000

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first test was significantly larger than the second one. This demonstrated that although the splitting failure did not affect significantly the peak strength, it significantly limited the deformation capacity; • The test on the anchors realized at the edge of the wall with 14 mm bar showed a splitting failure with typical vertical crack and separation of the masonry brick. The corresponding peak strength is lower of about 12% respect to the strength of the some anchor located at the center of the wall that failed due to masonry cone detachment; • The axial stress in the wall has a significant effect on the peal strength of anchors failed in splitting. In particular, an increase/decrease of the axial load pressure of 33% resulted in an increase/decrease of the peak strength of about 10%. Further studies and experimental tests are necessary to better define the influence of splitting failure according to distance from the edge and assess the reliability of available capacity models. Acknowledgements This research work was performed within the DPC-ReLUIS 2019- 2021 research programme, WP5: “Fast and integrated retrofit interventions”. The support of the University of Sannio with the FRA 2020 research project is greatly acknowledged. References Burton C, Visintin P, Griffith M, Vaculik J (2021) Laboratory investigation of pull-out capacity of chemical anchors in individual new and vintage masonry units under quasi-static , cyclic and impact load. Structures 34:901 – 930. https://doi.org/10.1016/j.istruc.2021.08.016 Ceroni F, Cuzzilla R, Pecce M (2016) Assessment of performance of steel and GFRP bars as injected anchors in masonry walls. Constr Build Mater 123:78 – 98. https://doi.org/10.1016/j.conbuildmat.2016.06.124 Ceroni F, Di Ludovico M (2020) Traditional and innovative systems for injected anchors in masonry elements : Experimental behavior a nd theoretical formulations. Constr Build Mater 254:119178. https://doi.org/10.1016/j.conbuildmat.2020.119178 Ceroni F, Maddaloni G, Pecce M (2017) Pull-out tests on injected anchors in tuff masonry elements. Key Eng Mater 747:326 – 333. https://doi.org/https://doi.org/10.4028/www.scientific.net/KEM.747.326 Cosenza E, Del Vecchio C, Di Ludovico M, et al (2018) The Italian guidelines for seismic risk classification of constructions: technical principles and validation. Springer Netherlands Di Ludovico M, Prota A, Moroni C, et al (2017) Reconstruction process of damaged residential buildings outside historical centres after the L’Aquila ea rthquake: part II —“heavy damage” reconstruction. Springer Netherlands Dolce M, Manfredi G (2015) Libro bianco sulla ricostruzione privata fuori dai centri storici nei comuni colpiti dal sisma del l’Abruzzo del 6 Aprile 2009. 224 Elgawady M, Lestuzzi P, Badoux M (2004) A review of conventional seismic retrofitting techniques for URM. In: 13th International Brick and Block Masonry Conference. Amsterdam, pp 1 – 10 fib bulletin 58 (2011) Design of anchorages in concrete Guide to good practice. Lausanno, Switzerland Garofano A, Ceroni F, Pecce M (2016) Modelling of the in-plane behaviour of masonry walls strengthened with polymeric grids embedded in cementitious mortar layers. Compos Part B 85:243 – 258. https://doi.org/10.1016/j.compositesb.2015.09.005 Silveri F, Riva P, Profeta G, et al (2015) Experimental Study on Injected Anchors for the Seismic Retrofit of Historical Masonry Buildings. Int J Archit Herit 3058:. https://doi.org/10.1080/15583058.2015.1113333 Sisti R, Di Ludovico M, Borri A, Prota A (2022) Seismic pe rformance of strengthened masonry structures : actual behaviour of buildings in Norcia and Campi Alto during the 2016 Central Italy seismic sequence. Bull Earthq Eng 20:321 – 348. https://doi.org/10.1007/s10518-021 01248-0 Sorrentino L, Cattari S, da Porto F, et al (2019) Seismic behaviour of ordinary masonry buildings during the 2016 central Italy earthquakes. Bull Earthq Eng 17:5583 – 5607. https://doi.org/10.1007/s10518-018-0370-4 Tomaževič M, Lutman M, Weiss P (1996) Seismic upgrading of old brick-masonry urban houses: Tying of walls with steel ties. Earthq Spectra 12:599 – 622 ACI 318 (2019) Building Code Requirements for Structural Concrete and Commentary Arifovic F, Nielsen MP (2006) Strength of anchors in masonry