Tests on welded connections made of high strength steel up to 1100 MPa

摘要

High strength steels with yield strength from 690 up to even 1100 MPa are very promising for high performance steel structures, e.g. bridges, cranes, transport, ships, offshore structures, etc. In spite of the base materials with excellent properties, today the design and fabrication of high strength steel structures are still facing difficulties. In the structural design the difficulties are in the assessment of the fatigue life in the joints, the buckling strength of the thin members and the deformation capacity of the (welded) connections. Several design as well as fabrication aspects of these steels have been investigated. This paper reports the experiments carried out covering some aspects related to the structural design of structures made of high strength steel.