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Structural Engineering and Mechanics Volume 71, Number 4, August25 2019, pages 341-350 DOI: http://dx.doi.org/10.12989/sem.2019.71.4.341 |
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Design procedure for seismic retrofit of RC beam-column joint using single diagonal haunch |
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Alireza Zabihi, Hing-Ho Tsang, Emad F. Gad and John L. Wilson
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| Abstract | ||
| Exterior beam-column joint is typically the weakest link in a limited-ductile reinforced concrete (RC) frame structure. The use of diagonal haunch element has been considered as a desirable seismic retrofit option for reducing the seismic demand at the joint. Previous research globally has focused on implementing double haunches, while the use of single haunch element as a less-invasive and more architecturally favorable retrofit option has not been investigated. In this paper, the key formulations and a design procedure for the single haunch system for retrofitting RC exterior beam-column joint are developed. An application of the proposed design procedure is then illustrated through a case study. | ||
| Key Words | ||
| limited-ductile; RC frame; exterior beam-column joint; seismic retrofit; single diagonal haunch | ||
| Address | ||
| Centre for Sustainable Infrastructure, Swinburne University of Technology, Melbourne, Australia | ||