屋蓋圍護結(jié)構(gòu)設(shè)計風(fēng)荷載取值探討
高鳴，馮陽
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（北京市建筑設(shè)計研究院有限公司， 北京 100045）
［摘要］機場航站樓、體育場館等屋蓋金屬圍護結(jié)構(gòu)在強風(fēng)天氣下遭破壞的情況屢見不鮮，應(yīng)從結(jié)構(gòu)設(shè)計角度引起重視。結(jié)合兩個工程風(fēng)洞試驗的結(jié)果并對照現(xiàn)行國家及行業(yè)協(xié)會規(guī)范、規(guī)程的相關(guān)規(guī)定，得出屋蓋圍護結(jié)構(gòu)風(fēng)荷載分布的一般性規(guī)律，指出在某些情況下風(fēng)荷載局部體型系數(shù)按規(guī)范或規(guī)程選取偏于不安全。對屋蓋圍護結(jié)構(gòu)局部體型系數(shù)的取值提出一般性建議。［關(guān)鍵詞］圍護結(jié)構(gòu); 風(fēng)荷載; 風(fēng)洞試驗; 金屬屋面; 檁條中圖分類號：TU391 文獻標(biāo)識碼：A 文章編號：1002-848X(2015)18-0091-03
Discussions on the wind load calculation of roof enclosure structuresGao Ming, Feng Yang(Beijing Institute of Architectural Design, Beijing 100045, China)Abstract: The damage of metal roof enclosure structure for airport buildings and gymnasium stadiums under extremely windy weather should be paid enough attention to in perspective of structural design. Combined with two wind tunnel test results of two real projects, some common rules on the wind load distribution of roof enclosure structure were acquired, considering the relative terms in the Chinese design codes or regulations. Results show that under some conditions, wind load local shape coefficients are unsafe according to codes or regulations. A general suggestion was proposed for the wind load local shape coefficient of roof enclosure structure.Keywords: enclosure structure; wind load; wind tunnel test; metal roof; purlin
作者簡介：高鳴，碩士，高級工程師，一級注冊結(jié)構(gòu)工程師，Email：gaomingbj@163.com。
