Wall with openings (No.22) – Maximum acceleration 0.15g
Figure 7. Unstrengthened walls (contours of principal compressive stresses)
(3) The results show the general behaviour as well as the initiation of cracking. Cracking is marked by sudden stress discontinuities as well as the relative movement of blocks. This movement develops rapidly into local failure mechanisms when
subjected to continued shocks in the hypothetical seismic event. The predicted failure and local collapse, reflecting modelled ductility and energy absorption, is similar to damage frequently sustained in seismic regions. Hence, these three models
have been used as the benchmarks to compare the performance of various retrofitted reinforcement schemes.
