This project aims at developing of a new design strategy whose goal is the design of connections able to withstand without any damage the rotation demands due to seismic events, namely “Free From Damage Connections”.
Such innovative beam-to-column connections are equipped with friction dampers which are located at the bottom flange level of the connected beam to dissipate the earthquake input energy. The friction resistance is calibrated by acting on the number and diameter of bolts and their tightening torque governing the preloading. The flexural resistance results from the product between the damper friction resistance and the lever arm. The connections are conceived to exhibit wide and stable hysteresis loops without any damage to the connection steel plate elements.