Dynamic modal identification of strengthened three-leaf stone masonry walls subjected to out-of-plane shaking table tests - L21

Dynamic monitoring and the subsequent dynamic identification of structures represent one of the most important non-destructive techniques to deepen the knowledge about their seismic behaviour. The results of a dynamic identification of the data collected during an experimental campaign on eight full scale three-leaf masonry walls tested on shaking table are presented. The walls were tested under out-of-plane dynamic actions using a shaking table. The influence of retrofitting interventions is compared considering grout injection, transverse tying and a combined solution of the two techniques. This allowed the frequencies, mode shapes and damping factors of each wall to be identified. A comparative evaluation of results obtained on different conditions allowed the different effects on the overall behaviour to be identified.

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