REINFORCEMENT METHOD AND REINFORCEMENT STRUCTURE FOR PERIPHERY OF SUPPORT PART OF STEEL GIRDER

摘要

To provide a reinforcement structure for the periphery of a support part of a steel girder, the reinforcement structure being capable of inhibiting progress of a crack on the periphery of the support part with work only from above the steel girder.SOLUTION: There is provided a reinforcement structure for the periphery of a support part of a steel girder whose part, at which a stiffener for connecting a web with a bottom flange so that a vertical surface approximately orthogonal to a side surface of the web is formed is provided, is placed on a sole plate and is loaded with loads repeatedly. The reinforcement structure comprises: an L-shaped material 5 having an L-shape in a side view and including a back part 51 and a bottom part 52 arranged so as to make the back part face the vertical surface 341 of the stiffener 34 and make the bottom part face the bottom flange 31; a tap bolt 4 screwed into the sole plate 21 so that the tap bolt penetrates the L-shaped material's bottom part and the bottom flange; and a joint using a bolt 6 for joining the back part to the stiffener.SELECTED DRAWING: Figure 1