| Summary: | This paper discusses the effects of weld bonding for flanges on the 3-point bending strength and axial compression strength of high strength hat-shaped steel sheet members. The effects of weld bonding were different depending on the loading direction and shape of the hat-shaped members. The deformation load increased in cases where the vertical walls of the hat-shaped member were deformed inward of the components. On the other hand, the load did not significantly increase in cases where the vertical walls were deformed outward of the components. When adhesive enhanced the load of the hat-shaped member, the load was higher than that of the laser welded member. It was revealed that adhesive present in the corner portion rather than in the parallel portion of the flange increases the load acting as the deformation resistance of a hat-shaped member.
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