Issue 45

F. Brandão et alii, Frattura ed Integrità Strutturale, 45 (2018) 14-32; DOI: 10.3221/IGF-ESIS.45.02 28 contact with the smaller arch located at the end of the smaller nave (for all these regions, the compressive stresses are about 3.37 MPa). The analysis of the stresses confirms the tendency of the church, over the whole time-history, to behave as a combination of macro-elements that are activated after the potential collapse of the connection between the walls. Figure 20: Peak of maximum principal stress during the Earthquake 2. Unit in MPa. Figure 21: Peak of minimum principal stress during the Earthquake 2. Unit in MPa. Both the maximum principal stress peak (5.54 MPa at t=10.34 s) and the minimum principal stress peak (5.67 MPa at t = 10.66 s) over the structure were not close to the peak ground acceleration of the Earthquake 2 accelerograms (the S00E component was 0.348 g at t=2.12 s, the Vertical component was 0.21 g at t=0.98 s; however the S90W component was 0.214 g at t=11.44 s). (a) (b) Figure 22 : Comparison between (a) the directional displacements and (b) the principal stresses obtained in the seismic analyzes.