考慮支承位移的鋼筋混凝土樓板受力有限元分析
曹永紅，伍川生，曹暉，白紹良
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(重慶大學土木工程學院，重慶 400045)［摘要］采用有限元分析程序ANSYS對一雙軸對稱的剪力墻結構建立一兩層1/4平面的模型，分析豎向荷載作用下樓板的內力，并與基于傳統(tǒng)方法的PMCAD的計算結果對比。指出由于不能考慮支承的豎向位移，傳統(tǒng)方法計算的樓板彎矩比有限元方法的結果偏大或者偏小，甚至反號，從而導致不適當?shù)匿摻钆渲?，既浪費又不安全。［關鍵詞］有限元；ANSYS；鋼筋混凝土；樓板The FEM analysis of reinforced concrete slabsCao Yonghong，Wu Chuansheng，Cao Hui，Bai Shaoliang(Faculty of Civil Engineering, Chongqing University, Chongqing 400045, China)Abstract:A reduced model of a reinforced concrete shear wall structure was built in ANSYS and the internal forces of the slabs were obtained under vertical loads by static analysis. The results were compared with those calculated by PMCAD, which is based on a traditional simplified analysis method. Since the vertical displacements of the slab supports can not be considered in the traditional method, the moments computed by PMCAD are larger or smaller than those analyzed by ANSYS, and even their signs are different. This leads to the improper rebar configuration, which is both unsafe and wasteful.Keywords:FEM；ANSYS；reinforced concrete; slab作者簡介：曹永紅，碩士，講師，Email:caoyh@cqu.edu.cn。參考文獻［1］藍宗建，王志遠，紅莉. 鋼筋混凝土主次梁樓板體系中樓板的合理設計方法(上，下)［J］.建筑科學, 2002,18(5)，(6).［2］張劍，傅學怡，劉暢. 重力荷載作用下鋼筋混凝土框架梁平板樓蓋分析［J］. 建筑結構，2003,33(11)：45-49.［３］伍川生. 建筑結構樓板內力及隔墻下暗梁受力的有限元分析［D］. 重慶：重慶大學，2007.
