Plate buckling resistance: patch loading of longitudinally stiffened webs and local buckling

摘要: Incremental launching of steel bridges is a demanding undertaking, on the erection site as well designers desk. Not seldom, structure itself during subjected to high concentrated forces lower flange when passing over shoe or an intermediate support (e.g. column). These forces, commonly referred patch loads, may be such magnitude that it governs thickness web in bridge girder. Though, small increase leads substantial gain weight bridge. Hence also higher material cost. One solution this problem buckling resistance with use longitudinal stiffener open (a plate) closed type (closed profile e.g. V-shape). The improved load european design code EN 1993-1-5 nowadays determined help yield for and contributing parts loaded reduced factor dependent slenderness influence one more stiffeners. Parts expression reduction have been somewhat questioned years amount tests FE simulations longitudinally stiffened webs has carried out. This research work produced large test data which used herein further improve prediction girder webs. Based gathered from literature previously done research, calibrated function was developed both Furthermore, partial safety proposal according guidelines 1990 (2002). In all, shown clearly accuracy compared other models 1993-1-5.