Moment resistance of bolted timber connections with perpendicular to grain reinforcements

摘要

This paper reports the results of an experimental study to evaluate the contribution of self-tapping screws as perpendicular to grain reinforcements for bolted glulam connections with slotted in steel plates. Test results of beam-to-column connection specimens subjected to monotonic and reverse cyclic loading show that the connections reinforced with self-tapping screws have an increased capacity by a factor of 2 and 1.7 when compared to un-reinforced connections under monotonic and reverse cyclic loading, respectively. Retesting retrofitted failed un-reinforced connections with self-tapping screw reinforcements also show increase in the capacity by 1.87 and 1.53 times compared to the un-reinforced case connections under monotonic and reverse cyclic loading, respectively. An extremely ductile failure mode was also observed with the reinforced connection.