Non-structural elements, such as equipment, are typically affixed to a building’s floor or ceiling and move in tandem with the structure during an earthquake. Seismic forces acting upon non-structural elements traverse the ground and the building’s structure. Considering this seismic load transmission mechanism, it becomes imperative to account for the interactions between soil, structure, and equipment, establishing seismic design procedures accordingly. In this study, a Soil-Structure-Equipment Interaction (SSEI) model is developed. Through seismic response analysis using this model, how the presence or absence of SSEI impacts equipment behavior is examined. Neglecting the SSEI aspect when assessing equipment responses results in an overly conservative evaluation of its seismic response. This emphasizes the necessity of proposing an analytical model and design methodology that adequately incorporate the interaction effect. Doing so enables the calculation of rational seismic forces and facilitates the seismic design of non-structural elements.

1. 서 론
2. 선행 연구 및 현행 기준 분석
    2.1 선행 연구
    2.2 현행 기준
3. 해석 모델 구축 및 해석 방법
    3.1 해석 모델
    3.2 해석 방법
    3.3 주요 해석 변수
    3.4 입력 지진동
4. 해석 결과
    4.1 FB-Decoupled vs. FB-Coupled
    4.2 SSI-Decoupled vs. SSI-Coupled
5. 지반-구조물(SSI) 및 구조물-비구조요소(SEI)상호작용에 따른 영향
6. 결 론
감사의 글

• 김유석(홍익대학교 건축공학부 교수) | Kim Yousok (Associate Professor, School of Architectural Engineering, Hongik University) Corresponding author
• 오현준(홍익대학교 건축공학과 박사과정) | Oh Hyeon-Jun (Ph.D. Candidate, School of Architectural Engineering, Hongik University)