- 摘 要
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（1 清華大學土木工程安全與耐久重點實驗室， 北京 100084； 2 清華大學土木工程系， 北京 100084；3 中國人民解放軍總后勤部建筑設(shè)計研究院，北京 100036）
［摘要］結(jié)合鋼-混凝土組合梁樓蓋體系設(shè)計實例，選用MIDAS/Gen軟件，分別針對施工階段與使用階段，建立了梁格模型、采用換算鋼梁截面、虛擬樓板的梁板混合模型以及采用真實組合截面的梁板混合模型，并采用有限元軟件進行了分析計算，應用有限元設(shè)計方法完成了該組合梁樓蓋體系設(shè)計，并得出如下結(jié)論：1）梁格模型可以精確模擬施工階段樓蓋體系受力特征；2）采用換算鋼梁截面、虛擬樓板的梁板混合模型可以準確得到使用階段組合梁樓蓋體系中各組合梁的內(nèi)力分布情況；3）采用真實組合截面的梁板混合模型可以精確得到組合梁樓蓋體系整體變形與自振特性；4）有限元建模設(shè)計方法為鋼混凝土組合梁樓蓋體系設(shè)計提供了一種高效、精確、實用的途徑。
［關(guān)鍵詞］鋼-混凝土組合結(jié)構(gòu); 組合樓蓋; 結(jié)構(gòu)設(shè)計; 有限元; 建模方法
中圖分類號：TU398.9 文獻標識碼：A 文章編號：1002-848X(2014)07-0071-04
Finite element method based design method of steel-concrete composite floor system
Nie Jianguo1,2, Zhou Meng1,2, Ding Ran1,2, Xie Wei3
(1 Key Laboratory of Structural Engineering and Vibration of China Education Ministry, Tsinghua University, Beijing 100084, China; 2 Department of Civil Engineering, Tsinghua University, Beijing 100084, China; 3 Building Design and Research Institute of the General Logistics, Beijing 100036, China)
Abstract:Based on an actual design project of a steel-concrete composite floor system, finite element design software MIDAS/Gen was used for the design of the construction stage and the service stage. The beam-slab model was established as well as the beam-slab hybrid model of equivalent steel sections and virtual concrete slab, while the actual composite beam section was elaborately simulated in the other beam-slab hybrid model. Finite element design software was used to analyze and calculate the three models. By employing the finite element design method, the design of the composite floor system was accomplished effectively. The strategy of the finite element method based design was introduced in detail. Conclusions can be drawn: 1) the mechanical behavior of the composite floor system for the construction stage can be well simulated by the beam-slab model; 2) the distribution of the internal force of beams of the composite floor system for the service stage can be achieved by the beam-slab hybrid model of equivalent steel sections and virtual concrete slab; 3) the overall deformation and vibration characteristics of the composite floor system can be accurately analyzed by the beam-slab hybrid model of actual composite beam section; 4) the finite element method based design method offers a well applicable approach for the design of the steel-concrete composite floor system effectively and accurately.
Keywords: steel-concrete composite structure; composite floor; structural design; finite element; modeling method
*國家科技支撐計劃資助(2011BAJ09B01)，清華大學自主科研計劃資助（2010Z03078）。
作者簡介：聶建國，工程院院士，博士，教授，Email: zhoum07@mails.tsinghua.edu.cn。
參考文獻
［1］聶建國，李盛勇，劉嶸，等. 深圳華潤中心月牙形中庭大跨鋼混凝土組合結(jié)構(gòu)［J］. 建筑結(jié)構(gòu)學報, 2004,25(6):126-128.
［2］聶建國，孫彤，溫凌燕，等. 某會展中心大跨交叉鋼混凝土組合梁系樓蓋設(shè)計［J］. 建筑結(jié)構(gòu)學報, 2004,25(6): 123-125.
［3］聶建國. 鋼-混凝土組合梁結(jié)構(gòu): 試驗、理論與應用［M］. 北京: 科學出版社, 2004.
［4］聶建國，聶鑫. 整體雙向局部單向鋼-混凝土板組合樓蓋:中國, 201120121014［P］. 201202-15.
［5］GB 50017—2003 鋼結(jié)構(gòu)設(shè)計規(guī)范［S］.北京：中國計劃出版社，2003.
［6］JGJ 3—2010 高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程［S］.北京：中國建筑工業(yè)出版社，2011.
