wind effect on single-column support billboard

Billboards are one of the types of structures that wind load can be the dominant lateral load on this type of structures. since billboards are usually placed in public places, destroying these structures under wind can cause irreparable damage. in this research, using wind tunnel testing and numerical modeling based on computational fluid dynamics (cfd), the effect of wind on single-plate, two-plate, and triangle billboards has been investigated. the models used in the wind tunnel are made using wood at a scale of 0.01. to find the critical loading pattern of wind load, the structure in the wind tunnel is rotated every 5 degrees concerning the wind direction, and the wind pressure values are recorded. the maximum displacement in single-plate, two-plate, and triangular billboards with tubular column sections is obtained at θ= 45°, θ= 45° and θ= 15°, respectively. due to the nature of the wind flow, rectangular columns are unsuitable for billboards because the stiffness of the column also changes with the change of the wind angle relative to the billboard.