PSI - Issue 44

Roselena Sulla et al. / Procedia Structural Integrity 44 (2023) 998–1005 Sulla et al./ Structural Integrity Procedia 00 (2022) 000–000

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a

b

Fig. 2. (a) Analytic relationship reported in Eq. (11); (b) pier/spandrel shear strength for irregular and regular masonry.

4. Application to a case study and discussion of the results The strength models previously summarized can be usefully applied to a preliminary parametric analysis carried out on a reference masonry wall (Fig. 3a), belonging to an ideal existing case study (Fig. 3b) having, according to the (NTC, 2018), the following characteristics:  Three stories;  Masonry thickness: 60 cm;  Knowledge Level: extensive, with a Confidence Factor ( CF ) equal to 1.2 (Circolare n. 7, 2019);  Location: Salerno (Italy);  Soil class: C;  Topographic category: T1;  Nominal life V N = 50 years;  Class of use: II. a b

Fig. 3. (a) Case study (dimensions in centimeters); (b) 3D representation on 3MURI Professional.

Parametric pushover analyses are conducted, aimed at studying the mechanisms involving piers and spandrels, and deriving the pushover curves for the case study considered. In particular, three masonry types are considered, namely: Irregular Stone Masonry (ISM), that is masonry made with an irregular fabric and characterized by low values for the mechanical properties; Regular Stone Masonry (RSM), referring to a masonry with regular fabric and intermediate