EXPERIMENTAL INVESTIGATION OF WOODEN ELEMENTS JOINTS ON METAL PLATES AND DOWEL TEETH, STRENGTHENED WITH STAMPED GEAR WASHERS UNDER A SHORT LOAD ACTION
Perfection of dowel-type fasteners with the purpose of increasing their bearing strength and reliability continues to remain actual. A special place among them is occupied by joints with dowel plates. Along with already known metal stamped nail plates, nail plates with the welded teeth, aluminum plates on screws («SHERPA» plates), metal plates with dowel teeth, the authors suggested and developed fasteners elements in the form of the metal cover plates and dowel teeth, strengthened with stamped gear washers. For the purpose of determination of strength and deformability of the developed joints short load action tests along and across the grain were prepared and carried out. Thus for the comparison of the strength and the deformability of joints on metal plates with dowel teeth, joints on metal plates and gear washers, as well as on metal plates and dowel teeth, strengthened with stamped gear washers models of connections were carried out. On the basis of the obtained data of short load-carrying capacity and deformability for all three types of nail plates the comparative analysis was conducted. The recommendation on application of the worked out connections and their advantages are given.