TY - JOUR
T1 - Influence of vented floors on the across-wind response of tall buildings
AU - Moorjani, Rishabh R.
AU - Lombardo, Franklin T.
AU - Devin, Austin F.
AU - Young, Bradley S.
AU - Baker, William F.
AU - Ray, Stephen D.
N1 - Funding Information:
The authors acknowledge that this research was made possible as a result of a collaborative effort between Skidmore, Owings & Merrill and the Wind Engineering Research Laboratory at the University of Illinois at Urbana-Champaign. In addition, the authors would like to acknowledge the steadfast and invaluable guidance and instruction provided by Dr. Nicholas Isyumov over many years in the development of the SOM Wind Tunnel.
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2021/2
Y1 - 2021/2
N2 - Architectural form can be a significant factor influencing the performance of a tall building under across-wind excitation. When wind tunnel testing of a defined architectural form reveals undesirable behavior, it must be mitigated through engineering modifications such as the addition of structural material or supplementary damping devices. Alternatively, informed design of architectural forms enables a tall building's shape to be modified in a way that has the potential to significantly reduce its across-wind response. Introducing openings in the form of vented floors was explored to reduce across-wind excitation of a prismatic square building. Single and double-vented aerodynamic treatments were applied at various locations along the height of prismatic square benchmark buildings of 7:1, 8.5:1, and 10:1 slenderness. In total, 36 distinct architectural forms were tested at Skidmore, Owings & Merrill's experimental boundary layer wind tunnel facility to determine the effectiveness of the vents. A ‘zone of maximum influence’ was identified at approximately 60%–80% of the height of prismatic square buildings. ‘Optimal’ locations for single- and double-vents were determined within this influence zone. Full-scale peak moment and acceleration responses were estimated and compared to evaluate the dependence of venting treatment effectiveness on incident wind speed and flow turbulence.
AB - Architectural form can be a significant factor influencing the performance of a tall building under across-wind excitation. When wind tunnel testing of a defined architectural form reveals undesirable behavior, it must be mitigated through engineering modifications such as the addition of structural material or supplementary damping devices. Alternatively, informed design of architectural forms enables a tall building's shape to be modified in a way that has the potential to significantly reduce its across-wind response. Introducing openings in the form of vented floors was explored to reduce across-wind excitation of a prismatic square building. Single and double-vented aerodynamic treatments were applied at various locations along the height of prismatic square benchmark buildings of 7:1, 8.5:1, and 10:1 slenderness. In total, 36 distinct architectural forms were tested at Skidmore, Owings & Merrill's experimental boundary layer wind tunnel facility to determine the effectiveness of the vents. A ‘zone of maximum influence’ was identified at approximately 60%–80% of the height of prismatic square buildings. ‘Optimal’ locations for single- and double-vents were determined within this influence zone. Full-scale peak moment and acceleration responses were estimated and compared to evaluate the dependence of venting treatment effectiveness on incident wind speed and flow turbulence.
KW - Across-wind excitation
KW - Aerodynamic treatments
KW - High frequency force balance
KW - Tall buildings
KW - Vents
KW - Wind tunnel testing
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U2 - 10.1016/j.jweia.2020.104480
DO - 10.1016/j.jweia.2020.104480
M3 - Article
AN - SCOPUS:85098988952
SN - 0167-6105
VL - 209
JO - Journal of Wind Engineering and Industrial Aerodynamics
JF - Journal of Wind Engineering and Industrial Aerodynamics
M1 - 104480
ER -