Journal of Korean Association for Spatial Structures (한국공간구조학회논문집)

Korean Association for Spatial Structures (한국공간구조학회)
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Seismic Performance of Replaceable Steel Brace System Subjected to Combined Loadings

복합하중을 고려한 교체 가능한 강재 브레이스 시스템의 내진성능

  • Ro Kyong Min (Department of Architectural Engineering, Kyung Hee University) ;
  • Kim Yoon Sung (Department of Architectural Engineering, Kyung Hee University) ;
  • Kim Min Sook (Department of Architectural Engineering, Kyung Hee University) ;
  • Lee Young Hak (Department of Architectural Engineering, Kyung Hee University)
  • 노경민 (경희대학교 건축공학과) ;
  • 김윤성 (경희대학교 건축공학과) ;
  • 김민숙 (경희대학교 건축공학과) ;
  • 이영학 (경희대학교 건축공학과)
  • Received : 2023.08.30
  • Accepted : 2023.09.19
  • Published : 2023.12.15
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Abstract

This study aims to assess the seismic performance of retrofitted reinforced concrete columns using a Replaceable Steel Brace (RSB) system, subjected to combined axial, lateral, and torsional loadings. Through experimental testing, one non-retrofitted concrete column specimen and two retrofitted specimens with variable sliding slot lengths were subjected to eccentric lateral loads to simulate realistic seismic loading. The retrofitted specimens with RSBs exhibited enhanced resistance against shear cracking, effective torsional resistance, and demonstrated the feasibility of easy replacement. The RSB system substantially improved seismic performance, achieving approximately 1.7 times higher load capacity and 3.5 times greater energy dissipation compared to non-retrofitted column, thus validating its efficacy under combined loading conditions.

Keywords

Acknowledgement

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

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