Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Analyzing Energy Dissipation Coefficient Changes in Each Hysteresis Step of Coupling Beams

연결보의 이력단계별 에너지 소산계수의 변화에 관한 연구

  • Yoo, Seok-Hyung (School of Architectural Engineering, Gyeongsang National University)
  • 유석형 (경상국립대학교 건축공학부)
  • Received : 2023.08.12
  • Accepted : 2023.10.17
  • Published : 2023.11.30
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Abstract

Reinforced concrete members undergo energy dissipation as they experience pinching and a reduction in both stiffness and strength during hysteretic behavior. Thus, it is crucial to adequately account for the hysteretic behavior characteristics of materials and members in nonlinear time history analysis. The energy dissipation coefficient, which measures how energy is lost during cyclic behavior, is expected to decrease as the behavior progresses. However, current guidelines referred to as AIK-B-2021-001 suggest a single energy dissipation factor for each member. In this study, changes were observed in the energy dissipation coefficient of coupling beams based on existing experimental results and nonlinear time history analysis using the Shear Hinge Displacement Type element of Perform 3D. A model was established for the hysteretic behavior to determine the idealized elastoplastic energy. In conclusion, it was found that the energy dissipation coefficient decreased as the hysteretic behavior advanced, and this change was quantified.

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References

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