In this study, it evaluate the hysteretic behavior of I type strut steel damper with newly designed locking behavior test system based on the results of previous research. The maximum deformation was reached at a horizontal load of 270 kN and a displacement of 25 mm, and the experiment was terminated. The damper installed on the left and right of the panel was also failed. In the future, a performance experiment is being conducted using the strut aspect ratio as a variable.

• 이현호(동양대학교 건축소방안전학과) | Lee Hyun-Ho 교신저자