Journal of Korean Association for Spatial Structures (한국공간구조학회논문집)

Korean Association for Spatial Structures (한국공간구조학회)
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Non-linear Finite Element Analysis and Performance Evaluations of Frames Strengthened by Non-uniform Concrete Brace Facade

비정형 콘크리트 가새 파사드 보강 골조의 비선형 유한요소 해석 및 성능평가

  • Lee, Sun-Ju (Department. of Architectural Engineering, Chosun University) ;
  • Kim, Hyo-Ju (Haemil Engineering & Construction) ;
  • Cho, Chang-Geun (Department of Architectural Engineering, Chosun University)
  • Received : 2024.02.12
  • Accepted : 2024.02.22
  • Published : 2024.03.15
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Abstract

Non-uniform reinforced concrete brace facade systems are newly considered to improve seismic performance of reinforced concrete frame buildings under lateral load. For normal and high strength concrete of 30MPa, 80MPa, and 120MPa, the cross-sections of reinforced concrete brace facade systems were designed as different size with same amount of reinforcements. The strengthened frame systems were analyzed by a non-linear two-dimensional finite element technique which was considering material non-linearities of concrete and reinforcing bars under monotonic and cyclic loadings. From the study of non-linear analysis of the systems, therefore, it was provided that the proposed braced facade systems were reliable to improve laterally load-carrying capacity and minimize damages of concrete members through comparisons of load-displacement curves, crack patterns, and stress distributions of reinforcing bars predicted by current non-linear finite element analysis of frame specimens.

Keywords

Acknowledgement

본 연구는 2023년도 교과부 한국연구재단의 기초연구사업(2023R1A2C2003175) 연구비지원에 의해 수행되었습니다.

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