Abstract
It is feared that the fatigue cracks in the lower flange of welded cranerunway girder cause very important accidents. The cracks in the lower flange of welded girder occur in the welded details between the flange and web plate, between flange and gusset plate and between flange and cover plate. The present study is to investigate the stress concentration at the end of gusset plates welded to the flange tip, and to verify the occurrence of fatigue cracks at this points, experimentally.
