（1 华东建筑设计研究院有限公司， 上海 200041;2 上海装配式建筑技术集成工程技术研究中心， 上海 200011）

［摘要］通过实体风洞试验与数值风洞模拟结果的对比分析，论证了数值风洞模拟方法应用于镂空网格结构平均风荷载模拟的可行性。通过对比分析箱形截面、工字形截面、平板壳截面对镂空网格结构平均风荷载模拟结果的影响，论证了在镂空网格结构数值风洞模拟中可将窄翼缘工字形截面简化为箱形截面。最后，以实际项目为背景，研究了大跨度镂空网格结构的风荷载特性。结果表明，镂空网格结构的水平风荷载较大，对结构设计影响明显。

［关键词］大跨度屋面； 镂空网格结构； 风荷载； 风洞试验； 数值风洞

中图分类号：TU312+.1， TU395文献标识码：A文章编号：1002-848X(2020)18-0016-06

Research on wind load of large span hollow grid structure

CUI Jiachun1,2, ZHOU Jian1, PAN Junjun1

(1 East China Architectural Design & Research Institute Co., Ltd., Shanghai 200041, China;2 Shanghai Engineering Research Center of Assembly Building Technology Integration, Shanghai 200011, China)

Abstract:The comparative analysis on results of the physical wind tunnel test and the numerical wind tunnel simulation was used to demonstrate the feasibility of applying the numerical wind tunnel simulation method to the simulation of the mean wind load of the hollow grid structure. By comparing and analyzing the influence of box section,工-shaped section, and flat shell section on the simulation results of the average wind load of the hollow grid structure, it was demonstrated that the narrow flange 工-shaped section can be simplified into a box in the numerical wind tunnel simulation of the hollow grid structure. At last, the  wind load characteristics of the large span hollow grid structure were studied based on an actual project. The results show that the horizontal wind load of the hollow grid structure is large, which has an obvious influence on the structure design.

Keywords:large span roof； hollow grid structure； wind load； wind tunnel test； numerical wind tunnel

*上海装配式建筑技术集成工程技术研究中心建设项目(16DZ2250600)。

作者简介：崔家春，博士，正高级工程师，Email: jch_cui@163.com。