PSI - Issue 64

Stefano Belliazzi et al. / Procedia Structural Integrity 64 (2024) 612–620 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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In structural models characterized by more than 1 storey (Fig. 4), the masonry pier PQ confirms a high vulnerability to the local mechanisms activation but it is lower than the structural model with 1 storey due to the beneficial effect of the additional compressive axial force in the shear and flexural capacity evaluations. It is important to note that the masonry spandrel DL shows a high vulnerability to both flexure and shear failure mode while the masonry pier AB confirms its low vulnerability due to the additional compressive axial load.

Fig. 4. Analyses results for structural models with more than 1 storey.

Fragility curves have been derived from structural analyses, using the Maximum Likelihood Estimation Method, assuming a continuous log-normal curve to fit discrete data (Fig. 5).

(a)

(b)

Fig. 5. Fragility curve for structural models with 1 storey (a) and with more than 1 storey (b).