Heat-affected zone in welded cold-formed rectangular hollow section joints

High-strength steel (HSS) has higher strength but lower ductility than mild steel. The cross-section of the structural members may be reduced using HSS instead of mild steel, provided the buckling of elements does not govern the failure. The reduced member size benefits the environment and economy by means of less energy consumption, less carbon...

Fatigue strength of repaired cracks in welded connections made of very high strength steels

For cyclically loaded structures, fatigue design becomes one of the important design criteria. The state of art shows that with modification of the conventional structural design methodology, the use of very high strength steels may have a positive effect on fatigue strength of welded connections. However, there is little known about the repair...

Fatigue strength of welded connections made of very high strength cast and rolled steels

Although Very High Strength Steels (VHSS) with nominal strengths up to 1100 MPa have been available on the market for many years, the use of these steels in the civil engineering industry is still uncommon. The main objective of the research is the determination of the fatigue strength of welded connections made of VHSS. The research comprised...

The static strenght of i-beam to circular hollow section column connections

Semi-rigid connections between I-section beams and tubular columns can be used economically for buildings and offshore structures. The lack of stiffening plates allows the fabrication of these connections in a cost effective way. Furthermore, by taking into account the connection strength and stiffness, the connections are also economically in...