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网壳结构的大空间曲面形状特点使得其在台风作用下的风振响应比较复杂,为了克服尺寸效应的影响,得到网壳结构表面风荷载分布规律,在计算流体力学(CFD)和FLUENT技术的基础上,利用常规湍流强度、田浦湍流强度以及石沅湍流强度的计算方法,对某组合网壳结构进行了台风作用下风场的数值模拟,通过分析其表面风荷载分布特性和不同风向攻角作用下组合网壳结构的表面风荷载,确定了组合网壳结构的风压分布规律、表面风压系数分布,最后得到网壳结构的风敏感部位,可以为工程前期抗风设计提供参考。
The wind-induced vibration response of the reticulated-shell structure under large typhoon is complex. To overcome the effect of size effect, the surface wind load distribution of the reticulated shell structure is obtained. In the CFD and FLUENT technologies Based on the numerical simulation of the wind field under a typhoon on the basis of the conventional turbulence intensity, the turbulence intensity at Tiapura and the turbulent intensity of the Shi Yuan, the wind field distribution of the wind and the angle of attack at different wind directions are analyzed Wind load distribution of the combined reticulated shell structure, determine the wind pressure distribution law and surface wind pressure coefficient distribution of the combined reticulated shell structure, and finally obtain the wind-sensitive part of the reticulated shell structure, which can provide reference for the wind-resistant design in the early stage of the project.