輕鋼結(jié)構(gòu)施工過程風(fēng)荷載取值探討
郭長江1，徐志2
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（1中國新興開發(fā)建設(shè)總公司，北京100039; 2北京交通大學(xué)土建學(xué)院，北京 100044）[摘要] 輕鋼結(jié)構(gòu)工程在施工過程中各構(gòu)件陸續(xù)安裝就位，不但體系的力學(xué)性能與設(shè)計時用以計算和分析的完整體系不同，其風(fēng)荷載也和使用階段有較大差異。依托某輕鋼光棚工程，采用商用CFD軟件 FLUENT，分別計算0°和45°兩個風(fēng)向角時各榀剛架上的風(fēng)壓系數(shù)分布，探討施工過程中屋蓋上的風(fēng)荷載取值，為同類結(jié)構(gòu)施工驗算提供參考。[關(guān)鍵詞] 輕鋼;施工;風(fēng)壓系數(shù)中圖分類號：TU392 文獻標識碼：A 文章編號：1002-848X(2013)S1-0982-03Discuss on the value of wind loadings of light-weight steel structures during construction processGuo Changjiang1, Xu Zhi2(1Abstract: Not only the structure systems but also the loadings of light-weight steel structures are varying during the construction process. Therefore, one typical light-weight project has been analyzed with CFD software FLUENT as an example to obtain the changing regularity of wind loadings in this paper. Two wind direction angles with 0°and 45°are considered in the numerical simulation and the values of wind pressure coefficients are calculated. Moreover, the wind loading results can be applied to similar structuresKeywords: light-weight structure; construction; wind pressure coefficient
