新型鋼筋桁架混凝土疊合雙向板剛度和撓度計(jì)算方法研究*
湯磊1,2，郭正興2，丁桂平2
- 摘 要
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湯磊1,2，郭正興2，丁桂平2（1 東南大學(xué)基本建設(shè)處， 南京 210096； 2 東南大學(xué)土木工程學(xué)院， 南京 210096）［摘要］根據(jù)已完成的新型鋼筋桁架混凝土疊合雙向板和現(xiàn)澆雙向板對(duì)比試驗(yàn)成果，針對(duì)新型疊合雙向板受力特性介于一次受力與二次受力之間的特點(diǎn)，結(jié)合我國(guó)規(guī)范以及相關(guān)理論與設(shè)計(jì)方法，引入相關(guān)折減系數(shù)對(duì)既有等效剛度計(jì)算方法的結(jié)果進(jìn)行適當(dāng)修正，最終提出新型疊合雙向板的剛度和撓度計(jì)算方法。將計(jì)算結(jié)果與實(shí)測(cè)結(jié)果比較可知，計(jì)算值與試驗(yàn)值基本接近，誤差在15%以內(nèi)，驗(yàn)證了方法的準(zhǔn)確性。最后提出了相關(guān)設(shè)計(jì)建議。［關(guān)鍵詞］疊合雙向板； 鋼筋桁架； 剛度； 撓度中圖分類號(hào)：TU398.2 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2013)19-0030-03Research on calculation method for stiffness and deflection of the new steel bar truss concrete superimposed two-way slabTang Lei1,2, Guo Zhengxing2, Ding Guiping2（1 Infrastructure Management Department, Southeast University, Nanjing 210096, China；2 School of Civil Engineering, Southeast University, Nanjing 210096, China）Abstract: According to results of the contrast test on new steel bar truss concrete superimposed two-way slab and cast-in-situ two-way slab, in view of the mechanical characteristics of the new superimposed two-way slab between primary loads and secondary loads, its stiffness and deflection calculation methods were put forward based on Chinese code and correlation theory and design method. Related reduction coefficient to improve existing formula for equivalent stiffness was introduced. Its accuracy was validated by comparison of calculation and test results that the error between them was controlled within 15%. At last, some suggestions were proposed.Keywords: superimposed two-way slab; steel bar truss; stiffness; deflection*“十二五”國(guó)家科技支撐計(jì)劃課題（2011BAJ10B03）。通訊作者：郭正興，教授，博士生導(dǎo)師，Email:guozx195608@126.com。參考文獻(xiàn)［1］預(yù)應(yīng)力混凝土疊合梁科研組. 預(yù)應(yīng)力混凝土矩形截面疊合梁撓度試驗(yàn)研究及計(jì)算方法［R］. 武漢: 武漢水電學(xué)院, 1981.［2］吳學(xué)輝. 預(yù)應(yīng)力混凝土疊合板剛度非線性有限元分析及撓度計(jì)算［D］. 天津: 天津大學(xué), 2007.［3］SZILARD R. 板的理論和分析［M］. 北京: 中國(guó)鐵路出版社, 1984.［4］徐芝綸. 彈性力學(xué)（下）［M］. 北京: 高等教育出版社，1990.［5］吳曉莉. 裝配整體式雙向板的設(shè)計(jì)理論和試驗(yàn)研究［D］.南京: 東南大學(xué), 2011.［6］周旺華. 現(xiàn)代混凝土疊合結(jié)構(gòu)［M］. 北京: 中國(guó)建筑工業(yè)出版社, 1998.［7］秦亮. 裝配整體式疊合連續(xù)樓板足尺加載試驗(yàn)研究［D］. 廣州: 廣州大學(xué), 2006.
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