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基于Fluent软件,采用雷诺应力模型RSM对六种不同体型的联体型双塔建筑物的静力风荷载进行了数值计算。研究了不同体型双塔间的静力干扰效应,顺、横风向和扭转方向的无量纲荷载系数等问题。分析表明,当风向角为0°且间距较近时,下游建筑位于上游建筑的尾流边界内,抑制了上游建筑尾流的发展,因此上游建筑的平均风荷载较单体时有所减小,而下游建筑的“遮挡效应”则非常显著。由于角部的处理,延缓了上游建筑气流的分离和再附,上游建筑的平均弯矩干扰因子IFm均小于尖角模型的相应值,而下游建筑的IFm均大于尖角模型的相应值。
Based on the Fluent software, the Reynolds stress model RSM was used to calculate the static wind load of six twin-tower buildings of different size. The static interference effect between two towers with different body sizes and the non-dimensional load coefficient in the wind direction and transverse direction are studied. The analysis shows that when the wind direction angle is 0 ° and the spacing is relatively close, the downstream structure is located within the wake boundary of the upstream building, which restrains the development of upstream wake and therefore the average wind load of the upstream building decreases slightly , While downstream buildings “occlusion effect ” is very significant. Because of the corner treatment, the separation and reattachment of the upstream building air flow are retarded. The mean bending moment IFm of the upstream buildings is less than the corresponding value of the sharp-angle model, while the IFm of the downstream buildings is larger than the corresponding value of the sharp-angle model.