Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
권호 표지
DOI QR코드

DOI QR Code

Optimal Outrigger Location in Vertical Two-Outrigger Systems with Varying Stiffness

높이방향으로 2개소에 상이한 강성을 가진 아웃리거 구조시스템의 최적위치 제안

  • Received : 2024.05.22
  • Accepted : 2024.07.22
  • Published : 2024.08.30
⟨ Previous Next ⟩

Abstract

This study proposes the optimal location for outriggers with varying stiffness in the two-outrigger system of high-rise buildings along the height direction. A schematic design of a 75-story building was used, considering key parameters such as stiffness ratios between upper and lower outriggers, outrigger stiffness, frame stiffness, and spacing between outriggers. The analysis included reviewing previous studies on the optimal two-outrigger location and the impact of stiffness ratios between upper and lower outriggers on their optimal position. This study presents more accurate equations than existing studies for calculating optimal outrigger positions in tall buildings with a vertical two-outrigger system.

Keywords

References

  1. Hoenderkamp, J. (2008). Second Outrigger at Optimum Location on High-rise Shear Wall, The Structural Design of Tall and Special Buildings, 17(3), 619-634 https://doi.org/10.1002/tal.369
  2. Kim, H. (2020). Proposal for Optimal Core Outrigger Position Reflecting Lateral Stiffness of Rigid Frame, Journal of the Architectural Institute of Korea, 36(8), 137-144. https://doi.org/10.5659/JAIK.2020.36.8.137
  3. Kim, H. (2024). Optimizing Outrigger Placement in High-rise Buildings with Vertical Two-Outrigger System, Journal of the Architectural Institute of Korea, 40(5), 165-174. https://doi.org/10.5659/JAIK.2024.40.5.165
  4. Kim, H., & Lee, J. (2005). The Simplified Analysis of Outrigger-Braced Structures Considering Transverse Shear Deformatiom, Journal of the Architectural Institute of Korea, 21(7), 19-26.
  5. Kim, H., Lim, Y., & Lee, H. (2020a). Optimum Location of Outrigger in Tall Buildings Using Finite Element Analysis and Gradient-based Optimization Method, Journal of Building Engineering, 31(14).
  6. Kim, H., Lim, Y., & Lee, H. (2020b). Strength Demand of Dual-purpose Outrigger System for Reducing Lateral Displacement and Differential Axial Shortening in a Tall Building, The Structural Design of Tall and Special Buildings, 29(4), 1-19. https://doi.org/10.1002/tal.1701
  7. McNabb, J., & Muvdi, B. (1975). Drift Reduction Factors for Belt High-rise Structures, Engineering Journal, American Institute of Steel Construction, 3rd Quarter.
  8. Midas IT (2024). Gen 2024 On-line Manual(General Structure Design System).
  9. Ministry of Land, Infrastructure and Transport (2022). Korean Design Standard.
  10. Smith, B., & Salim, I. (1981). Parameter Study of Outrigger-braced Tall Building Structures, Proceedings of the American Society of Civil Engineers, 107(10), 2001-2014. https://doi.org/10.1061/JSDEAG.0005798
  11. Smith, B., & Salim, I. (1983). Formulae for Optimum Drift Resistance of Outrigger Braced Tall Building Structures, Computers & Structures, 17(1), 45-50. https://doi.org/10.1016/0045-7949(83)90027-5
  12. Taranath, B. (1975). Optimum Belt Truss Location for High-rise Structures, Structural Engineer, 53(8), 345-347.