Joints - The Behaviour and Design of Steel Structures to EC3 - page 408

The beam reaction is transferred by weld shear to the end plate, by shear and
bearing to the bolts, and by shear and bearing to the supporting member. In mod-
elling this joint, the idealised T-stub assembly consists of the end plate and the
beamwebtowhichitisweldedasoneT-stub,whichisboltedtothecolumnflange
which with the column web forms the otherT-stub.
The beam is designed for zero end moment, with the end plate augmenting the
web shear and bearing capacity, while the supporting member is designed for the
eccentric beam reaction.
9.5.4 Angle cleat joint
An angle cleat joint (Figure 9.14c) also transfers a beam reaction R Ed to the sup-
portingmember.Oneortwoanglecleatsmaybeused,andboltedtothebeamweb
and to the supporting member.The flanges may be notched or coped, if required.
This joint also has very little moment capacity, as there may be significant flex-
ibility in the angle legs connected to the supporting member and in the bolted
connection to the beam web. The joint is classified as a nominally pinned joint,
and may be used for simple construction.
The beam reaction is transferred by shear and bearing from the web to the
web bolts and to the angle cleats. These actions are transferred by the cleats to
the supporting member bolts, and by these to the supporting member by shear,
tensionandcompression.Iftwoanglecleatsareused,theidealisedT-stubassembly
consistsofthecolumnflangeandwebasoneT-stub,andanglecleatsboltedtothe
beam web as the otherT-stub.
The beam is designed for zero end moment, with the angles augmenting the
web shear and bearing capacity, while the supporting member is designed for the
eccentric beam reaction.
9.5.5 Web side plate (fin plate) joint
A web side plate (fin plate) joint (Figure 9.15) transfers a beam reaction R Ed to
thesupportingmember,andcanalsotransferamoment M Ed .Thefinplateisfillet
weldedtothesupportingmember,andboltedtothebeamweb.Theflangesmaybe
notchedorcoped,ifrequired.Thisjointhaslimitedflexibility,andisclassifiedas
semi-rigid. It may be used for simple construction, and also for semi-continuous
construction provided that the degree of interaction between the members can be
established.
The beam reaction R Ed and moment M Ed are transferred by shear through the
bolts to the fin plate, by in-plane bending and shear to the welds, and by vertical
and horizontal shear to the supporting member.
The beam and the supporting member are designed for the reaction R Ed and
moment M Ed .
9.5.6 Welded moment joint
A fully welded moment joint (Figure 9.12a) transfers moment M Ed , axial force
N Ed , and shear V Ed from one member to another. The welds may be fillet or butt