Study on wind pressure distribution and gust response coefficient for a new terminal

Due to the complexities of architectural appearance and structural style, the wind pressure characteristics and the wind-induced dynamic analysis for those long-span roofs are still valuable to research. Wind pressure distributions of a whole roof and some key locations of a new terminal are discussed in detail based on wind tunnel test. According to the previous works and the statistical characteristics of measured wind pressure, the roof is divided into Gaussian and non-Gaussian zone based on the determined threshold values. Finally, the local wind-induced dynamic analysis of suspended roof is performed. Results show that the mean pressure coefficients of the leeward area for the cornice and corridor are around -1.0 and -0.8 respectively, and the maximum mean pressure coefficient can reach to -1.58 on the cornice area. Furthermore, wind pressures on the walls around the courtyard are extreme low, and these on both the top and the bottom sides of the suspended roof are also very small. In addition, the non-Gaussian region of the terminal is located on the windward and the corner region of the roof edge. It should be noted that there is no obvious non-Gaussian phenomenon on the roof around the courtyard. At last, the gust response coefficients of displacement of the suspended roof are significantly higher than those in general situation. It is mainly attributed to a low mean displacement.