Innovative Stainless Steel Applications in transport ... - Euro Inox

Figure 42. Overlapping joint (Yrjölä 2008).
The strength and rigidity of a joint can be improved by making the ends of the brace
members’ joint overlap (Figure 42). Due to this overlapping, the brace member’s
flanges also transfer load to the chord member. The chord member’s surface stresses are
therefore less and the strength of the joint is defined on the basis of the effective crosssectional
surface of the brace members. It is recommended to weld the end of the brace
member that remains invisible in overlapping joints.
T and Y joints
In the case of T and Y joints, the joint between the brace member and the chord member
is designed in the same way as in the case of K joints, when the load acts on the level of
the brace and chord.
Figure 43. Typical loading of a T joint (Yrjölä 2008).
In the case of joints such as that in Figure 43, the load at the end of the joining member
generates a shearing load and a torque load on the chord member, in addition to a
bending load. Torque can be further divided into torsional and distortion load, affecting
the cross-section of the chord member. Distortional load balances itself out, but it
deforms the cross-section into a diamond shape (Figure 44). Distortional load causes
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