Journal of Korean Association for Spatial Structures (한국공간구조학회논문집)

Korean Association for Spatial Structures (한국공간구조학회)
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Nonlinear Analysis Models to Predict the Hysteretic Behavior of Existing RC Column Members

기존 RC 기둥 부재의 이력거동 예측을 위한 비선형 해석모델

  • Choi, Myeong-Ho (Division of Architectural and Fire Protection Engineering, Pukyong National University) ;
  • Lee, Chang-Hwan (Department of Architectural Engineering, Pukyong National University)
  • 최명호 (부경대학교 건축.소방공학부) ;
  • 이창환 (부경대학교 건축공학과)
  • Received : 2022.10.21
  • Accepted : 2022.11.10
  • Published : 2022.12.15
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Abstract

The recent earthquake in Korea caused a lot of damage to reinforced concrete (RC) columns with non-seismic details. The nonlinear analysis enables predicting the hysteresis behavior of RC columns under earthquakes, but the analytical model used for the columns must be accurate and practical. This paper studied the nonlinear analysis models built into a commercial structural analysis program for the existing RC columns. The load-displacement relationships, maximum strength, initial stiffness, and energy dissipation predicted by the three analysis models were compared and analyzed. The results were similar to those tested in the order of the fiber, Pivot, and Takeda models, whereas the fiber model took the most time to build. For columns subjected to axial load, the Pivot model could predict the behavior at a similar level to that of the fiber model. Based on the above, it is expected that the Pivot model can be applied most practically for existing RC columns.

Keywords

Acknowledgement

이 논문은 부경대학교 자율창의학술연구비(2022년)에 의하여 연구되었음.

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