Research on Seismic Performance of Mortise-tenon Joint Using Self-resetting Variable Friction Dampers
The seismic performance of mortise-tenon joint using disc spring rubber self-resetting variable friction dampers is studied.Referring to the typical practices of traditional wooden structures in Southwest China,two types of joints for straight tenon and step through tenon were made for low cycle repeated loading tests.Two sets of four components were designed by reinforced and unreinforced with dampers.Comparing the failure modes,hysteresis curves and skeleton curves of two sets of mortise-tenon joints.The results show that the amount of tenon removal for specimens with added dampers can be effectively reduced,and the phenomenon of tenon fracture and splitting can be significantly improved.The hysteresis curves of both groups of joints show a Z-shaped shape,and the slip phenomenon of unreinforced joints is more prominent.After being reinforced by dampers,the hysteresis curves of the two types of joints are more plump,the energy dissipation capacity bearing capacity and stiffness are significantly improved.
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