Effective bending capacity of dowel-type fasteners

Abstract

The design of connections with dowel-type fasteners according to Eurocode 5 is based on Johansen's yield theory. Here, the bending capacity of the fastener is an important parameter. Tests with timber connections with dowel-type fasteners show plastic deformations of fasteners in failure modes 2 and 3. The plastic hinge, however, is in most cases not fully developed and consequently the full plastic fastener bending moment is not reached. Depending on the moment-angle relation of fasteners in bending a modified equation was derived to determine the fastener bending capacity.