某低透风率格构式悬臂结构风荷载试验研究
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(1 湖南省建筑设计院， 长沙 410011； 2 湖南大学风工程与桥梁工程湖南省重点实验室， 长沙 410082)
［摘要］格构式结构的体型系数在我国《建筑结构荷载规范》（GB 50009—2012）中没有相关条文规定，需要在风洞试验的基础上确定。以株洲天梭雕塑为工程背景，进行了低透风率格构式结构的静力天平测力试验，模型几何缩尺比为1∶50，得到了该结构两个水平方向的体型系数随风向角的变化关系，并依据荷载规范给出了风振系数和风荷载标准值。结果表明，低透风率格构式结构的体型系数可能会大于实体式结构，也比其他相关规范的取值要大；对于株洲天梭雕塑而言，X向的最不利风向角为30°，Z向的最不利风向角为90°。［关键词］格构式结构; 静力天平; 风洞试验; 体型系数中图分类号：TU351 文献标识码：A 文章编号：1002-848X(2015)17-0099-04
Experimental investigations on wind loading of a type of lattice tower with high solidity ratioFang Hui1, Yang Xiao1, Li Shouying2(1 Hunan Provincial Architectural Design Institute, Changsha 410011, China; 2 Hunan Provicial Key Laboratory for Wind Engineering and Bridge Engineering, Hunan University, Changsha 410082, China)Abstract: The shape coefficient on lattice structures is not stipulated in current Chinese Load code for the design of building structures（GB 50009—2012）and it should be obtained by use of wind tunnel tests. Taking Zhuzhou Tiansuo Status as engineering background, wind tunnel tests for static force measurement on a high solidity ratio lattice tower were carried out with a geometrical scale of 1∶50. The relationship between shape coefficient and wind attack angle is particularly studied, and wind vibration coefficient and wind loading standard value were also given according to load code. The results show that the shape coefficient of high solidity ratio lattice structures is greater than that of the solid structures and other relative codes. As for Zhuzhou Tiansuo Status, the most adverse wind attack angles for X and Z axles are respectively 30°and 90°.Keywords: lattice structure; static force balance; wind tunnel test; shape coefficient
作者简介：方辉，博士，高级工程师，Email：fanghui2008@126.com。
