The design code specifies the seismic loads for non-structural components (NSC) regardless of their planar locations. Thus, structures with irregular geometry that exhibit torsional behavior may experience greater seismic loads than those specified by the design code. This study assessed the adequacy of the code-specified equivalent static loads using nonlinear dynamic analysis results from structures intentionally designed to be eccentric, and finally proposed a formula that accounts for torsional amplification effects in buildings. The analysis results indicated that the code-specified equivalent static loads were conservative in the lower stories or near the center of mass. On the other hand, the dynamic analysis-based loads exceeded the equivalent static load in the outer perimeter of the mid- and upper stories. Accordingly, a torsional amplification factor equation was proposed, which is a function of the building's eccentricity ratio and the relative distance from the center of mass. The proposed equation applies to the NSC installed in the stories above the midpoint of the total building height. For a building with zero eccentricity or NSC at the center of mass, the function was set to unity.

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1. 서 론
2. 현행 기준 및 선행연구 분석
    2.1 ASCE7-22
    2.2 기존 연구 분석
3. 예제건물의 모델링
4. 비틀림에 의한 비구조요소 설계하중 평가
    4.1 해석결과의 분석 및 등가정적하중과의 비교
    4.2 비틀림증폭계수 제안
5. 결 론
/ 감사의 글 /
/ REFERENCES /

• 강중헌(한양대학교 건축공학과 석사과정) | Kang Joongheon (Graduate Student, Department of Architectural Engineering, Hanyang University)
• 유은종(한양대학교 건축공학과 교수) | Yu Eunjong (Professor, Department of Architectural Engineering, Hanyang University) Corresponding author
• 홍윤수(한양대학교 건축공학과 박사후 연구원) | Hong Yoonsu (Post-doctoral Researcher, Department of Architectural Engineering, Hanyang University)