Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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The Lateral Behavior of a Core Outrigger System without an Upper Shear Wall

상부층에 전단벽이 미배치된 코어 아웃리거 구조시스템의 수평거동

  • Kim, Hyong-Kee (Dept. of Architectural Engineering, Kangwon National University)
  • Received : 2023.01.18
  • Accepted : 2023.07.03
  • Published : 2023.07.28
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Abstract

This study aims to comprehensively understand the lateral behavior of a core outrigger system without shear walls. To achieve this objective, structural analysis and design of a 60-story building were conducted using the MIDAS-Gen program. The key variables investigated include the ratio of shear wall height to the overall building height and the stiffness of the outrigger system. Based on the analysis results, various aspects of the lateral behavior were examined. These included the distribution of shear forces and overturning moments transmitted from the shear wall, the lateral displacement distribution of the top story, and the distribution of axial forces from exterior columns transferred at the height where the outrigger is installed. Through this research, it was observed that the ratio of shear wall height to the overall building height and the stiffness of the outrigger system had a significant impact on the lateral behavior of the core outrigger system in high-rise buildings. The findings of this study can provide valuable insights for the proper design of high-rise outrigger systems in the absence of shear walls, serving as a foundation for securing essential data in structural design.

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References

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