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Seismic Performance of CFT column to H beam Connections Reinforced with T-stiffeners  

Kim, YoungJu (한양대 건축공학과)
Chae, Young Suk (우송공업대학 건축과)
Shin, Kyung Jae (한남대 건축공학부)
Oh, Young Suk (대전대 건축공학부)
Moon, Tae Sup (한양대 건축공학부)
Publication Information
Journal of Korean Society of Steel Construction / v.15, no.6, 2003 , pp. 701-709 More about this Journal
Abstract
The paper presented the seismic performance of T-stiffener moment connections for use in steel moment-resisting frames. The connections were strengthened by welding the vertical and horizontal clement of the T-stiffener to the beam flange and column f1ange. Finite clement analysis and experiments were conducted to determine the behavior of T-stiffener-reinforced connections. The results of the finite element analysis confirmed the effectiveness of the T-stiffener, whose horizontal element lengthened to mitigate local stress concentrations of the beam flange on the horizontal stiffener. Full-scale specimens were also tested cyclically to study hysteresis behavior. The main parameters used were the ratio of the T-stiffener to beam strength and the shape of the horizontal element. As the length of the horizontal element increased, the deformation capacity of the connections enhanced. Likewise, all specimens behaved according to the Ramberg-Osgood curve and showed stable hysteresis behavior.
Keywords
T-stiffener; vertical and horizontal element of T-stiffener; strength ratio; plastic deformation capacity;
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