张 敏, 楼文娟, 何鸽俊, 沈国辉, 陈水福. 群体高层建筑风荷载干扰效应的数值研究[J]. 工程力学, 2008, 25(1): 179-185.
引用本文: 张 敏, 楼文娟, 何鸽俊, 沈国辉, 陈水福. 群体高层建筑风荷载干扰效应的数值研究[J]. 工程力学, 2008, 25(1): 179-185.
ZHANG Min, LOU Wen-juan, HE Ge-jun, SHEN Guo-hui. NUMERICAL STUDY ON INTERFERENCE EFFECTS OF WIND LOADS ABOUT A CLUSTER OF TALL BUILDINGS[J]. Engineering Mechanics, 2008, 25(1): 179-185.
Citation: ZHANG Min, LOU Wen-juan, HE Ge-jun, SHEN Guo-hui. NUMERICAL STUDY ON INTERFERENCE EFFECTS OF WIND LOADS ABOUT A CLUSTER OF TALL BUILDINGS[J]. Engineering Mechanics, 2008, 25(1): 179-185.

群体高层建筑风荷载干扰效应的数值研究

NUMERICAL STUDY ON INTERFERENCE EFFECTS OF WIND LOADS ABOUT A CLUSTER OF TALL BUILDINGS

  • 摘要: 采用可实现的k-ε湍流模型,对处于B类地貌风场中由4栋复杂体型高层建筑组成的建筑群进行了静力风荷载和风场的数值模拟,计算得出了群楼周围的流场分布和建筑表面各测点的风压,与风洞试验结果比较表明:数值模拟方法具有较好的精度,可用于两个以上的复杂体型高层建筑群楼的静力干扰研究。着重讨论了复杂体型高层建筑物之间的静力干扰效应,结果表明:串列布置时,上游建筑对下游建筑的迎风面和侧风面都有影响;而并列布置时,静力干扰作用只发生在相邻建筑物的侧风面,对相邻建筑物的迎风面影响很小;静力干扰效应随高度有显著的变化,尤其对高低错落的建筑群,表现为明显的三维效应。

     

    Abstract: The wind induced static interference effects on four tall buildings are numerically simulated by using the CFD (Computational Fluid Dynamics) technology. The flow field and the mean wind pressure coefficient of tall buildings are computed using realizable k-ε turbulence model in the boundary layer flow with terrain B, and the simulating results are compared with the data obtained from the wind-tunnel experiment, which show that numerical simulation is a feasible way to study the static interference effects of more than two tall buildings. Then the static interference effects between tall buildings are discussed. It shows that the upstream building has interferences on the windward side and crosswind side of the downstream building, and the static interference effects only work on the crosswind side of building in the case of parallel arrangement. The static interference effects will change along with the altitude of building. Especially, when the height of buildings is different, the static interference effects are complicated and three-dimensional.

     

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