Abstract
A structural reinforcement carried out on a 12th century mansion in masonry with the aim of a seismic improvement valued as a decrease in the Seismic Risk Class [4].The reinforcement technique combines the use of FRP systems with carbon fiber strips applied to the external perimeter walls and FRCM systems applied to the internal walls.The proposed solution allows the seismic improvement both in relation to local failure phenomena and in the overall behavior of the whole structure. Particular focus is given to the dimensional calculation of the reinforcements and to the combined contribution of the two techniques, highlighting the peculiarities of both. The FRP system is used to avoid overturning and to increase the resistance of the walls, while the FRCM system is used for the general improvement of the mechanical properties of the masonry. Particular attention is paid to the evaluation of the design resistance values related to the debonding failure by carrying on special technical measures in installation of aramid fiber or CFRP connectors.The intervention methodology allows an increase of the Seismic Risk Class of at least 3 levels, as deductible from the calculation of the PAM value.
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