대한건축학회논문집 (Journal of the Architectural Institute of Korea)

  • 제38권5호
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  • Pages.195-203
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  • 2022
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  • 2733-6239(pISSN)
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  • 2733-6247(eISSN)
대한건축학회 (Architectural Institute of Korea)
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편심하중을 고려한 교체 가능한 Steel Link로 보강한 철근콘크리트 기둥의 구조성능평가

The Structural Performance of Reinforced Concrete Column Retrofitted with Replaceable Steel Link Subjected to Eccentric Load

  • Lee, Jeong In (Dept. of Architectural Engineering, Kyung Hee University) ;
  • Lim, Ji Hoon (Dept. of Architectural Engineering, Kyung Hee University) ;
  • Lee, Young Hak (Dept. of Architectural Engineering, Kyung Hee University)
  • 투고 : 2022.03.03
  • 심사 : 2022.04.21
  • 발행 : 2022.05.30
⟨ 이전 논문 다음 논문 ⟩

초록

There are several retrofitting techniques used for the seismic retrofit of reinforced concrete frames, but choosing a technique entails considering various factors. Among these techniques, the steel brace is widely known to have great seismic performance; it is the most efficient seismic retrofit method to resist to lateral forces and gusset plate is an important component for its performance. Although the gusset plate has developed a lot to improve the seismic performance of a steel brace, it is impractical due to its complicated details. This study presents a simplified seismic retrofit method named the replaceable steel link (RSL) system. The key advantage of this system is that the details are quite simple compared to buckling-restrained braces (BRB), and since moving along with the deformation of the column is possible, the displacement can be absorbed. Furthermore, the RSL can be easily replaced even if the steel link is deformed or buckled. A total of two non-retrofitted specimens and two retrofitted specimens were fabricated and tested to evaluate their structural performances. Two types of loading methods were applied as variables. As a result of the experiment, specimens retrofitted with the proposed RSL system showed 169% of maximum load, 142% of effective stiffness, and 250% of energy dissipation capacity compared to non-retrofitted specimen. These results prove that the retrofit method of the RSL system is effective for resisting seismic load.

키워드

과제정보

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임 (No. 2020R1A2C2009351)

참고문헌

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