The Influence of Aeroelastic Effects on Wind Load and Wind-Induced Response of a Super-Tall Building: An Experimental Study

Abstract

To investigate the wind-induced response and equivalent wind load of a super-tall building, an aeroelastic model of the building was designed to measure aerodynamic interference in wind tunnel tests. Experiments on pressure and vibration measurements were conducted in both uniform and turbulent wind fields, and the displacement response and surface wind pressure at different locations of the model were recorded. The displacement time-history response spectrum and aerodynamic spectrum in both fields were compared and analyzed. The research showed that the mean displacement responses of the model in the across-wind and along-wind directions gradually increased with velocity under different wind attack angles. The mean displacement response of torsion moment in a uniform wind field changed very little, and the mean and fluctuating wind pressures in each layer were significantly stratified, making it is easy to generate a coupled vortex-induced resonance. On the other hand, the mean displacement response of torsion moment in a turbulent field increased with wind velocity. Strong turbulence made the fluctuating wind pressure at the top and bottom of the model slightly more significant than in a uniform field. The resistance of super-tall buildings came from turbulence excitation in the along-wind direction and the self-excited resistance generated by the across-wind direction. The test methods and main research conclusions may provide a reference for glass curtain walls and the structural wind-resistant design of super-tall buildings.

Research on the Characteristics of Urban Building Cluster Wind Field Based on UAV Wind Measurement

“…These interference effects are influenced by various factors, including the position of the buildings in the urban plan [3], their height [4], the type of terrain [5], and their cross-section [6]. Despite the innate complexity and multivariate traits of interference effects, and the prevalent assumption of ubiquitous shielding effects from neighboring structures, there remains a lack of extensive guidelines, predominantly due to the shortage of comprehensive field experimental data [7][8][9]. For example, on 18 May 2021, the SEG Plaza in Shenzhen, China, experienced noticeable swaying even under mild wind conditions, drawing significant public attention.…”

CFD Study of Pressure Distribution on Recessed Faces of a Diamond C-Shaped Building

“…Wind flow in the recessed cavity of an H-shaped tall building using CFD was studied [7]. The wind-induced response and equivalent wind load on super tall buildings were investigated using experimental methods on building models [8]. The flow between the cavity and outside of the cavity for different aspect ratios were studied.…”