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Proposal for seismic retrofit of beam-to-column connection by the addition of H-section haunches to beams using bolt connection

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Abstract

This Paper proposes a method to improve plastic deformation capacity of the welded wide flange beam-to-column connections in existing steel buildings by using supplemental H-section haunches jointed by high-strength bolts and welding which expected to secure construction quality. By attaching supplemental haunches to upper and lower flanges of the beam end, the critical section is moved from the beam end to the beam cross-section corresponding to the tip of the supplemental haunch. As a result, it could prevent the fracture of beam flange initiated from toe of weld access hole. Cumulative plastic deformation capacities of retrofitted specimens were 1.5 to 2.0 times larger than that of un-retrofitted specimen.

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Authors and Affiliations

  1. Department of Architecture, Kobe University, 1-1, Rokkodai, Nada, Kobe, 657-8501, Japan

    Hayato Asada, Tsuyoshi Tanaka & Hiroaki Matoba

  2. Structural Engineering Research Center, Tokyo Institute of Technology, 4259 Nagatsuda-chou, Midori, Yokohama, 226-8503, Japan

    Satoshi Yamada

Authors
  1. Hayato Asada
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  2. Tsuyoshi Tanaka
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  3. Satoshi Yamada
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  4. Hiroaki Matoba
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Corresponding author

Correspondence to Hayato Asada.

Additional information

Discussion open until May 1, 2015. This manuscript for this paper was submitted for review and possible publication on February 28, 2014; approved on December 8, 2014.

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Asada, H., Tanaka, T., Yamada, S. et al. Proposal for seismic retrofit of beam-to-column connection by the addition of H-section haunches to beams using bolt connection. Int J Steel Struct 14, 865–871 (2014). https://doi.org/10.1007/s13296-014-1217-8

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  • DOI: https://doi.org/10.1007/s13296-014-1217-8

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