椅形超高层结构风压分布数值模拟研究

Numerical simulation of wind pressures distribution on the super high-rise buildings with chair-shaped

以拟建的某椅形建筑为例,根据CFD基本原理,运用计算流体力学软件建立了数值风洞模型,得到了结构表面风压系数,在此基础上,分析了不同风向角作用下建筑周边的流场分布特性及结构表面风压系数分布规律,给出了建筑物在最不利风向下的最不利区域的风压系数,为结构抗风设计参数的确定提供依据。

Taking some planned chair-shaped building as the example,according to the basic principle of CFD,using computational fluid dynam-ics software,numerical wind tunnel model is established. The wind pressure coefficients for the inner and outer surface of structure are obtained. Through analysis of the flow field and pressure coefficient distribution in different wind directions,the wind pressure coefficient on the most criti-cal sections in the most critical wind direction are presented. All the analysis and results can provide reasonable recommendations for the final de-sign scheme.