대한건축학회논문집 (Journal of the Architectural Institute of Korea)

  • 제40권6호
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  • Pages.209-216
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  • 2024
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  • 2733-6239(pISSN)
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  • 2733-6247(eISSN)
대한건축학회 (Architectural Institute of Korea)
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L형 평면 고층건물의 층다이아프렘 가정의 유효성에 관한 연구

Validation Study of Floor Diaphragm Assumptions in L-Shaped Tall Buildings

  • Kim, Yun-Gon (Dept. of Architectural Engineering, Daegu University)
  • 투고 : 2024.04.24
  • 심사 : 2024.06.13
  • 발행 : 2024.06.30
⟨ 이전 논문 다음 논문 ⟩

초록

This study evaluated the validity of assuming floor diaphragms in tall buildings with L-shaped plans. Although conventional structural design typically assumes floor diaphragms, these buildings may not behave as expected. To investigate this, a simplified structural model with meshed slab plate elements was used to compare results with and without the diaphragm assumption. The comparison included in-plane displacement (DX, DY, RZ), in-plane stress of the roof slab, and shear force on the exterior wall at the first floor. The main parameter in this study was the slab ratio connecting two perpendicular sub-units. Load combinations of lateral forces from two perpendicular sub-units can be categorized into two types: torsional displacement caused by same-direction lateral forces and stress concentration on the slab caused by opposite-direction lateral forces. The differences between models with and without diaphragms were significant when applying the load combination that causes stress concentration on the connection slab. As the connecting slab ratio decreased, stress concentration on the slab increased, but displacement at the outermost corner did not directly increase due to variations in torsion depending on the plan shape. However, differences in displacement between the models with and without diaphragms continued to grow. Therefore, it is not recommended to apply the floor diaphragm assumption when the connecting slab ratio is less than 50%.

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과제정보

이 연구는 2023학년도 대구대학교 연구년 결과물로 제출됨.

참고문헌

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