Cross-wind Effect of High-rise Buildings:State of Art

Abstract:

The mechanisms of cross-wind effects of high-rise buildings are very complicated,which are associated with the incident turbulence,the wake and the aerodynamic feedback.Although considerable research efforts to assess cross-wind effect have undertaken worldwide for decades,no widely adopted sophisticated theory and method are made,further-more,no relevant guidelines are made in the load standards and codes of most countries.These worldwide research subjects of cross-wind effect include three important parts,the determination of cross-wind aerodynamic force,the identification of cross-wind aerodynamic damping and the calculation methods of across-wind equivalent static wind loads.Wind tunnel technique,data fitting technique and parameter identification technique are the principal means to determine the cross-wind effects of high-rise buildings.Based on the problems and deficiency of across-wind response research,some research emphases are proposed:the effect of complex building shape to aerodynamic forces,the identification,mechanisms and influence factors of cross-wind aerodynamic damping,calculation methods of equivalent static wind load and 3-D coupling problems of complex high-rise buildings.

Key words:high-rise building; cross-wind effect; aerodynamic force; aerodynamic damping; static equivalent wind loads