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（1 清華大學(xué)土木工程系 北京 100084；2 國(guó)電華北電力設(shè)計(jì)院工程有限公司 北京 100011）
［提要］某大型火力發(fā)電廠煙囪結(jié)構(gòu)中采用大跨度圓環(huán)形簡(jiǎn)支板。原設(shè)計(jì)方案為鋼筋混凝土板，后改為鋼混凝土組合板。利用有限元程序?qū)︿摻罨炷涟搴弯摢不炷两M合板兩種設(shè)計(jì)方案進(jìn)行計(jì)算分析和對(duì)比，說(shuō)明鋼混凝土組合板應(yīng)用于大跨度不規(guī)則板結(jié)構(gòu)的優(yōu)點(diǎn)和經(jīng)濟(jì)指標(biāo)。工程實(shí)踐表明，應(yīng)用效果良好。
［關(guān)鍵詞］ 鋼筋混凝土環(huán)板 鋼混凝土組合環(huán)板 有限元分析 工程應(yīng)用
Application of Composite Steelconcrete Slab in a Chimney Construction/Nie Jianguo1,Tian Chunyu1,Zhou Jianjun2,Liu Changqing2,Li Xingli2(1 Civil Engineering Department,Tsinghua University, Beijing 100084,China; 2 North China Power Engineering Co., Ltd., Beijing 100011,China)
Abstract:The design and analysis of longspan cirque simple supported slab are introduced in a chimney construction.The reinforced concrete slab is used in the original design and then replaced by the steel concrete composite slab.Finite element method is used to analyze reinforced concrete slab and steelconcrete composite slab, and the cost of materials is compared. The analysis results reveal that steelconcrete composite slab has advantage over reinforced concrete slab when used in  longspan and special slab structure.
Keywords:reinforced concrete cirque slab;   steelconcrete composite cirque slab;   finite element analysis; engineering practice