某低透風率格構式懸臂結(jié)構風荷載試驗研究
方輝1，楊曉1，李壽英2
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(1 湖南省建筑設計院， 長沙 410011； 2 湖南大學風工程與橋梁工程湖南省重點實驗室， 長沙 410082)
［摘要］格構式結(jié)構的體型系數(shù)在我國《建筑結(jié)構荷載規(guī)范》（GB 50009—2012）中沒有相關條文規(guī)定，需要在風洞試驗的基礎上確定。以株洲天梭雕塑為工程背景，進行了低透風率格構式結(jié)構的靜力天平測力試驗，模型幾何縮尺比為1∶50，得到了該結(jié)構兩個水平方向的體型系數(shù)隨風向角的變化關系，并依據(jù)荷載規(guī)范給出了風振系數(shù)和風荷載標準值。結(jié)果表明，低透風率格構式結(jié)構的體型系數(shù)可能會大于實體式結(jié)構，也比其他相關規(guī)范的取值要大；對于株洲天梭雕塑而言，X向的最不利風向角為30°，Z向的最不利風向角為90°。［關鍵詞］格構式結(jié)構; 靜力天平; 風洞試驗; 體型系數(shù)中圖分類號：TU351 文獻標識碼：A 文章編號：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
作者簡介：方輝，博士，高級工程師，Email：fanghui2008@126.com。
