The purpose of this paper is to search the optimal location of offset outrigger system in high-rise building after a structural schematic design of 80 stories building was conducted, making use of MIDAS-Gen. In this research, the key factors of analysis study were column stiffness, outrigger position in plan and outrigger location in height. For the aim of finding out the optimum position of offset outrigger system in tall building, we studied the lateral displacement in top floor which is the very essential variables in the structural design of high-rise building. The results of study showed that the column stiffness, the outrigger location in plan and outrigger location in height had an effect on the optimal position of outrigger system. Also, it is indicated that the research results can be useful in acquiring the structural design materials for seeking the optimum position of offset outrigger system in tall building.

Abstract
 1. 서 론
 2. 구조해석에 대한 모델과 방법
  2.1 해석모델
  2.2 해석방법
 3. 구조해석에 대한 결과와 분석
  3.1 코어 아웃리거 구조인 경우
  3.2 오프셋 아웃리거 구조(2라인과 5라인에 배치)인 경우
  3.3 오프셋 아웃리거 구조(1라인과 6라인에 배치)인 경우
  3.4 아웃리거의 평면상 위치에 따른 최적 아웃리거의입면상 위치에 대한 비교분석
  3.5 아웃리거의 최적위치에 대한 본 연구의 해석결과와기존 제안식의 비교분석
 4. 결 론
 References

• 김형기(강원대학교 공학대학 건축시스템공학과 교수) | Hyong-Kee Kim Corresponding author