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Steel and Composite Structures
  Volume 39, Number 5, June10 2021 , pages 645-664
DOI: https://doi.org/10.12989/scs.2021.39.5.645
 


Full-scale tests of two-story RC frames retrofitted with steel plate multi-slit dampers
Mohammad Mahdi Javidan, Mohammad Seddiq Eskandari Nasab and Jinkoo Kim

 
Abstract
    There is a growing need of seismic retrofit of existing non-seismically designed structures in Korea after the 2016 Gyeongju and 2017 Pohang earthquakes, especially school buildings which experienced extensive damage during those two earthquakes. To this end, a steel multi-slit damper (MSD) was developed in this research which can be installed inside of partition walls of school buildings. Full-scale two-story RC frames were tested with and without the proposed dampers. The frames had structural details similar to school buildings constructed in the 1980s in Korea. The details of the experiments were described in detail, and the test results were validated using the analysis model. The developed seismic retrofit strategy was applied to a case study school building structure, and its seismic performance was evaluated before and after retrofit using the MSD. The results show that the developed retrofit strategy can improve the seismic performance of the structure to satisfy a given target performance level.
 
Key Words
    seismic retrofit; slit dampers; energy dissipation; seismic performance; hysteretic damper
 
Address
Mohammad Mahdi Javidan, Mohammad Seddiq Eskandari Nasab and Jinkoo Kim: Department of Civil & Architectural Engineering, Sungkyunkwan University, Suwon, Republic of Korea
 

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