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(1 廣東省建筑設(shè)計(jì)研究院，廣州510010；2 中山大學(xué)，廣州 510275)
［提要］超長連續(xù)混凝土板的溫度效應(yīng)十分顯著，易造成樓板大開裂。采用有限元分析方法對(duì)超長混凝土板的溫度應(yīng)力進(jìn)行分析研究，并提出通過合理的結(jié)構(gòu)布置和使用新型的后澆帶鋼箱(板)變形裝置來降低混凝土樓板溫度應(yīng)力、防止樓板開裂的方法。
［關(guān)鍵詞］超長；溫度效應(yīng)；混凝土；收縮；應(yīng)力
FEM Analysis and Design on Temperature Effect of Superlong Concrete Floor/Ou Yanjun1,2，Chen Xing1, Xiang Qian1, Liu Jike2 (1 The Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010, China; 2 Sun Yatsen University， Guangzhou 510275， China)
Abstract:The temperature effect of super-long concrete floor is so obvious that the tensile stress will easily lead to extensively slab crack. The temperature stress distribution in the concrete floor of a super-long underground structure is analyzed with FEM method, and some proposals, including optimization of structural arragement and new type of joint which is named as steel box deformation equipment, are raised.
Keywords: super-long; temperature effect; concrete; shrinkage; stress