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Earthquakes and Structures   Volume 10, Number 1, January 2016, pages 73-89
Effect of connection rotation capacities on seismic performance of IMF systems
Sang Whan Han, Ki-Hoon Moon and Sung Jin Ha

Abstract     [Buy Article]
    The seismic performance of moment frames could vary according to the rotation capacity of their connections. The minimum rotation capacity of moment connections for steel intermediate moment frames (IMF) was defined as 0.02 radian in AISC 341-10. This study evaluated the seismic performance of IMF frames with connections having a rotation capacity of 0.02 radian. For this purpose, thirty IMFs were designed according to current seismic design provisions considering different design parameters such as the number of stories, span length, and seismic design categories. The procedure specified in FEMA P695 was used for conducting seismic performance evaluation. It was observed that the rotation capacity of 0.02 radian could not guarantee the satisfactory seismic performance of IMFs. This study also conducted seismic performance evaluation for IMFs with connections having the rotation capacity of 3% and ductile connections for proposing the minimum rotation capacity of IMF connections.
Key Words
    rotation capacity; connections; intermediate moment frame; seismic performance; seismic design
Sang Whan Han, Sung Jin Ha:Department of Architectural Engineering, Hanyang University, Seoul 133-791, Republic of Korea

Ki-Hoon Moon: Disaster Prevention Research Team, Daewoo Institute of Construction Technology, Suwon,
Kyungki-do 440-210, Republic of Korea

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