Abstract
Yield stress of steel pipes became higher than that of plates because of work hardening; however, the apparent yield stress lower than that of the expected because of residual stress. And also in case of hot dip zinc galvanized steel pipes, thier deformation behaviors are alternated comparing with the raw materials since residual stress is partially released through the galvanizing. This study quantitatively realized the effects of the galvanizing to compressive deformation behavior by residual strain measurements, tensile strength tests, and compressive strength tests of the series of short columns. Furthermore, we propose the limited, value of thickness to diameter ratio of hot dip zinc galvanized steel pipe.
