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Earthquakes and Structures
  Volume 19, Number 4, October 2020 , pages 227-241

Effect of frame connection rigidity on the behavior of infilled steel frames
Sayed Mohammad Motovali Emami and Majid Mohammadi

    An experimental study has been carried out to investigate the effect of beam to column connection rigidity on the behavior of infilled steel frames. Five half scale, single-story and single-bay specimens, including four infilled frames, as well as, one bare frame, were tested under in-plane lateral cyclic reversal loading. The connections of beam to column for bare frame as well as two infill specimens were rigid, whereas those of others were pinned. For each frame type, two different infill panels were considered: (1) masonry infill, (2) masonry infill strengthened with shotcrete. The experimental results show that the infilled frames with pinned connections have less stiffness, strength and potential of energy dissipation compared to those with rigid connections. Furthermore, the validity of analytical methods proposed in the literature was examined by comparing the experimental data with analytical ones. It is shown that the analytical methods overestimate the stiffness of infilled frame with pinned connections; however, the strength estimation of both infilled frames with rigid and pinned connections is acceptable.
Key Words
    masonry infill; connection rigidity; stiffness; strength; energy dissipation; steel frame
Sayed Mohammad Motovali Emami :Department of Civil Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
Majid Mohammadi:International Institute of Earthquake Engineering and Seismology, No. 21, Arghavan St., North Dibajee, Farmanieh, Tehran, Iran

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