Abstract
Wari-kusabi Joints (Japanese traditional mortise-tenon joints with wedges) have been used as wooden structure joints in Japan. The pull-out resistance mechanism of the joint which connects post to beam was analyzed and modeled based on mechanical theory. The load-deformation curves in pull-out tests of mortise-tenon joints were influenced by resistance of compressive strain inclined to the grain and friction between post and beam. We proposed a mechanical model including these factors. The load-deformation curves in the elastic and plastic region could be estimated; initial stiffness K, and yield point deformation δy were calculated by proposed design formula.
