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Title |
Seismic Performance of RC First-Story Frames with Steel Dampers According to Installation Location
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DOI |
https://doi.org/10.4334/JKCI.2026.38.3.363 |
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Keywords |
강재댐퍼; RC 골조; 내진보강; 반복가력 실험; 에너지 소산 steel damper; RC frame; seismic retrofit; cyclic loading test; energy dissipation |
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Abstract |
This study experimentally investigates the influence of steel damper installation location on the seismic performance of reinforced concrete (RC) frame structures. Cyclic loading tests were conducted on three specimens: an unstrengthened RC frame (BF), a frame strengthened with steel dampers installed at the upper part of the frame (SFD), and a newly developed specimen with dampers installed at the lower part of the frame (RS2). The experimental results showed that the damper strengthened specimens exhibited improved strength, energy dissipation capacity, and ductile behavior compared to the unstrengthened frame. In particular, the RS2 specimen demonstrated stable post-peak behavior due to the rocking mechanism induced by the hinge installed at the lower steel plate. The results provide useful experimental data for understanding the structural behavior of RC frames strengthened with steel dampers and for developing practical seismic retrofit strategies.
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