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针对上海浦东地区某复杂高耸结构工程实例,基于流体分析软件FLUENT13平台,采用RNGκ-ε湍流模型进行了24种风向角下的建筑表面风压分布模拟,并将分析结果整理后与现行《建筑结构荷载规范》(GB50009-2012)中相关系数的规定做了比较。分析结果表明,高耸结构体型系数随高度不同而变化,并非规范中的常数;塔身各表面体型系数分布规律的数值模拟结果与规范大致吻合,但在局部存在差异。最后根据数值风洞模拟得到的塔身最大负压的分布区域及大小,对围护结构设计提出了建议。
According to the example of a complex towering structure project in Shanghai Pudong area, based on the fluid analysis software FLUENT13 platform, the wind pressure distribution of building surface under 24 wind directions was simulated by RNG κ-ε turbulence model. After finishing the analysis results, Load specification "(GB50009-2012) to compare the provisions of the correlation coefficient. The analysis results show that the body structure coefficient of towering structure varies with height, which is not a constant in the specification. The numerical simulation results of body surface shape coefficient distribution of tower body generally agree with the norms, but there are some differences in local. Finally, according to the numerical wind tunnel simulation tower obtained the maximum negative pressure distribution area and size of the design of the envelope proposed.