Since atypical high-rise buildings are vulnerable to gravity loads and seismic loads, various structural systems must be applied to ensure the stability of the structure. In this study, the authors selected a 60-story twisted-shaped structure among atypical high-rise structures as an analytical model to investigate its structural behavior concerning the outrigger system. The structural analyses were performed varying the number of installed layers and the arrangement of the outrigger system, as well as the placement of the mega column, as design variables. The analysis revealed that the most effective position for the outrigger was 0.455H from the top layer, consistent with previous studies. Additionally, connecting outriggers and mega columns significantly reduced the displacement response of the model. From an economic standpoint, it is deemed efficient to connect and install outriggers and mega columns at the structure's ends.

1. 서론
2. 이론적 고찰
    2.1 아웃리거 시스템과 메가컬럼 시스템
    2.2 선행연구 고찰
3. 해석모델의 선정
    3.1 설계변수의 설정
    3.2 해석모델의 개요
    3.3 해석 방법
4. 해석 결과
    4.1 고유치해석
    4.2 층간변형률 분석
    4.3 최상층 변위
5. 결론
References

• 황일근(영남대학교 일반대학원 건축학과, 석사과정) | Hwang Il-Geun (Dept. of Architecture, Yeungnam University)
• 김현수(선문대학교 건축학부 교수, 공학박사) | Kim Hyun-Su (Division of Architecture, Sunmoon University)
• 강주원(영남대학교 공과대학 건축학부 교 수, 공학박사) | Kang Joo-Won (School of Architecture, Yeungnam University) Corresponding author