Experimental study of wind load effects on large outdoor single-column-supported three-plate billboard
Wang Dahai1 Li Zhihao1 Li Jie2
1. Wuhan University of Technology, Wuhan 430070, China;
2. The State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
Abstract：During recent years, the outdoor large single-column-supported billboards develop rapidly, however, their wind-induced damage are reported occasionally and are known as typical wind vulnerability structures. For billboards, the existing calculation method for wind load effects are not satisfied the current requirements and need to be improved immediately. In this paper, a series of wind tunnel experiments on a typical three-plate billboard were conducted. Based on the synchronous pressure measurement test results, the structural overall horizontal and torque wind load coefficients in different wind directions were investigated, and the analytical power spectrum densities of along-wind and torsional wind load in most unfavorable wind direction were given. Furthermore, according to the aero-elastic model test by utilizing the high frequency force balance, the characteristics of the wind-induced internal force responses at the basement of the single column were analyzed. The theoretical calculation methods of the along-wind and torsional wind-induced dynamic response of the three-plate billboard were proposed by combining these wind tunnel testing results. The study can provide the data support and theoretical approach for prediction of the wind load effects of large single-column-supported three-plate billboard.
汪大海 李志豪 李杰. 大型户外单立柱三面广告牌风荷载的试验研究[J]. 土木工程学报, 2018, 51(8): 11-20.
Wang Dahai Li Zhihao Li Jie . Experimental study of wind load effects on large outdoor single-column-supported three-plate billboard. 土木工程学报, 2018, 51(8): 11-20.
