Study on surface wind pressure coefficient and wind load body shape coefficient of super high-rise buildings under interference of decorative strips
To solve the problem of decorative strips falling off due to the uneven distribution of wind pressure on the exterior surface of super high-rise buildings caused by the interference of curtain wall decorative strips,based on the Davenport pulsating wind speed power spectrum and fitting function,LES turbulence model,and the recommended calculation formula in Load code for the design of building structure(GB 50009-2012),a three-dimensional wind field fluid simulation of super high-rise building with different types of decorative strips was conducted using computational fluid dynamics method.The wind pressure distribution characteristics on the surface of super high-rise buildings and decorative strips themselves as well as variation pattern of the wind load shape coefficient of decorative strips with their cross-sectional shape characteristics and arrangement spacing was investigated.The results indicate that the extreme wind pressure in the flat area of the exterior surface of super high-rise buildings increases,while the extreme wind pressure in the corner transition area decreases,installing decorative strips can improve the phenomenon of sudden changes in wind pressure in the corner area of the building surface.When the cross-section of the decorative strip is rectangular,the wind load shape coefficient on the front surface increases with the increase the section height.When the cross-section is trapezoidal,the wind load shape coefficient on the side surface decreases with the decrease of the bottom.The trend of the wind load shape coefficient with the variation of the spacing between decorative strips is not obvious.
super high rise buildingcurtain wall decorative striplarge eddy simulationwind pressure distributionwind load shape factor
NETL
NSTL
万方数据
维普
