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本文结合汕头粤东信息大厦的风洞试验,详细分析了复杂结构断面建筑物在其尾流受到下游结构干扰下的风压分布特性。试验表明:处于受扰物体尾流边界上的施扰物体可以降低来流在受扰物体上的分离速度,从而使最大负压系数降低。当施扰物体处于被扰物体尾流边界的某些位置时,被扰物体表面的最大负压系数受到显著影响,最多可降低45%。文中还对典型断面结构进行了进一步的试验研究,在验证以上的结论同时,试验结果也显示,施扰建筑位于被扰结构临近的较大区域,其风压增大15%以上,最大可增大39%。本文所得的一些结论可为相应的工程提供参考。
Combining with the wind tunnel test of Shantou Yuedong Information Building, this paper analyzes in detail the wind pressure distribution characteristics of buildings with complex structures under the interference of downstream structures. Experiments show that the disturbing object at the wake boundary of the victim can reduce the separation speed of the incoming stream on the disturbed object and thus reduce the maximum negative pressure coefficient. The maximum negative pressure coefficient on the surface of the disturbed object is significantly affected when the object is located at some position on the boundary of the wake of the object being disturbed, which can be reduced by up to 45%. At the same time, the results of the above tests also show that the fake buildings are located in a large area adjacent to the disturbed structure, the wind pressure of which increases by more than 15% and the maximum can be increased Big 39%. Some conclusions obtained in this paper can provide reference for the corresponding project.