STEEL BOX BRIDGE OF HARDNESS RADATION

摘要

PURPOSE: A filled type steel box girder bridge with differential stiffness is provided to extend service life by reducing fatigue load and prevent deformation by preventing local buckling in a steel box. CONSTITUTION: A filled type steel box girder bridge with differential stiffness is constituted as follows. A steel box with differential stiffness is supported by a bridge seat(30) placed on the top of a pier. A pier reinforcement part(41) is formed inside the steel box. The pier reinforcement part is constituted as follows. An outer lower portion of a ceiling finishing plate(411) is welded with a lower flange(403). A channel plate(412) is welded with the inner left portion, the inner right portion, and the inner lower portion of the channel finishing plate, so a U-shaped space(413) is formed. The U-shaped space is filled with filler(C).