大跨度鋼桁架-混凝土組合樓蓋整體模型試驗研究
彭桂平1,馬軍2,趙才其2
- 摘 要
-
彭桂平1,馬軍2,趙才其2(1 華信郵電咨詢設計研究院有限公司,杭州 310014; 2 東南大學土木工程學院,南京 210096)[摘要]通過對一種新型的45m大跨度鋼桁架-混凝土組合樓蓋進行縮尺比為1∶9的整體模型試驗,檢測了該組合樓蓋的受力變形性能及鋼桁架與混凝土的共同工作情況,進而驗證所用計算方法的可靠性;通過實測模型結構的強度、剛度指標,結合理論分析結果揭示實際工程具有足夠的安全度。試驗結果和理論分析的對比證明了此種大跨度鋼桁架混凝土組合樓蓋能夠充分發(fā)揮鋼材受拉和混凝土受壓的優(yōu)點,具有良好的受力性能,特別適用于重荷載、大跨度、小結構高度的樓蓋結構。[關鍵詞]組合樓蓋;模型試驗;有限元分析中圖分類號:TU398.7文獻標識碼:A文章編號:1002-848X(2012)07-0060-04Experimental study on steel truss-concrete integral model of large spatial composite floorPeng Guiping1, Ma Jun2, Zhao Caiqi2(1 Huaxin Consulting Co., Ltd., Hangzhou 310014, China;2 Civil Engineering College, South East University, Nanjing 210096, China)Abstract: Through a scaled test (1/9) model on a new type of large spatial composite floor, which is composed of steel truss and concrete floor, the deformation properties and joint working condition were detected. The results show that the calculation method used for such structures is consistent with the real structure. By measuring the strength, stiffness index of the model structure, and then combining theoretical analysis, the results revealed the actual engineering has enough security. Experimental results and theoretical analysis prove that this large spatial composite floor can give full play of steel in tension and concrete in compression, is especially suitable for heavy loads, large span and small structures height floor structure.Keywords: composite floor; model experiment; finite elements analysis作者簡介:彭桂平,碩士,工程師,Email:penggp08@gmail.com。參考文獻[1]趙惠麟,韓重慶,尹凌峰,等板片空間結構體系的結構原理及其選型[J] 工業(yè)建筑,2004,34(11):1-4.[2]DG/TJ 08 52—2004 空間格構結構設計規(guī)程[M].上海:上海市建設工程標準定額管理總站,2005.[3]彭桂平. 大空間組合樓蓋整體模型試驗研究及典型節(jié)點有限元分析[D]. 南京:東南大學,2006.[4]趙楠,李婷.大跨度雙向空間桁架相交節(jié)點的試驗研究[J]. 建筑結構,2009, 39(12):103-105.[5]王國強.實用工程數值模擬技術及其在ANSYS上的實踐[M].西安:西北工業(yè)大學出版社,1999.
[6]張金鳳.大空間樓蓋若干關鍵問題的研究[D].南京:東南大學,2005.