Issue 51

M.G. Masciotta et alii, Frattura ed Integrità Strutturale, 51 (2020) 423-441; DOI: 10.3221/IGF-ESIS.51.31 440 commercial finite element code NOSA-ITACA, was used. From comparison with the experimental results, it turns out that the adopted simulation is able to replicate the dynamic behavior of the damaged arch; numerical frequencies and mode shapes match their experimental counterparts, although in the last damage scenario the actual frequencies relative to the third and fourth modes are slightly overestimated. In view of the sensitivity of the experimental and numerical results to the geometrical features of the arch and manual assemblage adopted, further laboratory tests and FE analyses may be required to refine the numerical prediction strategy. R EFERENCES [1] Levy, M. (2006). The Arch: Born in the Sewer, Raised to the Heavens, Nexus Network Journal. 8, pp. 7-12. [2] Pelà, L., Aprile, A. and Benedetti, A. (2009) Seismic assessment of masonry arch bridges, Eng Struct. 31, pp. 1777– 1788. doi: 10.1016/j.engstruct.2009.02.012 [3] Gaetani, A., Lourenco, P.B., Monti, G., and Moroni, M. (2017). Shaking table tests and numerical analyses on a scaled dry-joint arch undergoing windowed sine pulses. Bull Earthquake Eng, 15, pp. 4939–4961. [4] De Santis, S. and de Felice, G. (2014). A fibre beam-based approach for the evaluation of the seismic capacity of masonry arches. Earthq Eng Struct Dyn, 43, pp. 1661–1681. doi: 10.1002/eqe.2416 [5] Cavalagli, N., Gusella, V. and Severini, L. (2017). The safety of masonry arches with uncertain geometry. Comput Struct, 188, pp. 17–31. [6] Sánchez-Aparicio, L.J. et al. (2019). Non-destructive means and methods for structural diagnosis of masonry arch bridges. Automation in Construction, 104, pp. 360-382. [7] Conde, B. et al. (2017). Structural assessment of masonry arch bridges by combination of non-destructive testing techniques and three-dimensional numerical modelling: Application to Vilanova bridge. Engineering Structures, 148, pp. 621-638. [8] de Arteaga, I. and Morer, P. (2012). The effect of geometry on the structural capacity of masonry arch bridges. Constr Build Mater, 34, pp. 97–106. [9] Conde, B., Díaz-Vilariño, L., Lagüela, S., and Arias, P. (2016). Structural analysis of Monforte de Lemos masonry arch bridge considering the influence of the geometry of the arches and fill material on the collapse load estimation. Constr Build Mater, 120, pp. 630–42. [10] Severini, L., Cavalagli, N., DeJong, M. and Gusella, V. (2018). Dynamic response of masonry arch with geometrical irregularities subjected to a pulse-type ground motion. Nonlinear Dyn, 91(1), pp. 609–24. [11] Milani, G. and Lourenço, P.B. (2012). 3D non-linear behavior of masonry arch bridges. Comput Struct, 110–111, pp. 133–150. [12] Cavicchi, A. and Gambarotta, L. (2007). Lower bound limit analysis of masonry bridges including arch-fill interaction. Eng Struct, 29(11), pp. 3002–3014. [13] Zampieri, P., Zanini, M., and Faleschini, F. (2016). Influence of damage on the seismic failure analysis of masonry arches. Constr Build Mater, 119, pp. 343–355. [14] Zanaz, A., Yotte, S., Fouchal, F. and Chateauneuf, A. (2016). Efficient masonry vault inspection by monte carlo simulations: case of hidden defect. Case Stud Struct Eng, 5, pp. 1–12. [15] Sarhosis, V., De Santis, S. and de Felice, G. (2016). A review of experimental investigations and assessment methods for masonry arch bridges, Structure and Infrastructure Engineering, 12(11), pp. 1439-1464. [16] Ochsendorf, J.A. (2006). The masonry arch on spreading supports. Struct Eng, 84(2), pp. 29–35. [17] Zampieri, P., Faleschini, F., Zanini, M.A. and Simoncello, N. (2018). Collapse mechanisms of masonry arches with settled springing, Eng Struct, 156, pp. 363-374. [18] Zampieri, P., Cavalagli, N., Gusella, V. and Pellegrino, C. (2018). Collapse displacements of masonry arch with geometrical uncertainties on spreading supports, Comput Struct, 208, pp. 118–129. [19] Galassi, S., Misseri, G., Rovero, L. and Tempesta, G. (2018). Failure modes prediction of masonry voussoir arches on moving supports, Engineering Structures, 173, pp. 706–717. [20] Coccia, S., Di Carlo, F. and Rinaldi, Z. (2015). Collapse displacements for a mechanism of spreading-induced supports in a masonry arch. Int J Adv Struct Eng, 7(3), pp. 307–20. [21] Alvandi, A., and Cremona, C. (2006). Assessment of vibration-based damage identification techniques. Journal of Sound and Vibration, 292, pp. 179-202. [22] Farrar, C.R. and Worden, K. (2007). An introduction to structural health monitoring. Philosophical Transactions of the Royal Society A, 365, pp. 303-315.