- 摘 要
-
（西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055）
［摘要］以《金屬壓型板試驗歐洲建議》為依據(jù)，對4塊1∶1尺寸閉口型壓型鋼板試件進行截面力學(xué)特性試驗研究，并分別采用荷載撓度曲線方法和極限彎矩方法確定截面特性。分析結(jié)果表明：荷載-撓定曲線方法計算所得結(jié)果比理論值偏大較多，正向加載時極限彎矩方法計算所得結(jié)果與理論值吻合良好，而負向加載時差別較大，原因是負向加載時，閉口型壓型鋼板受壓翼緣中部分鋼材沒有全截面發(fā)揮作用。在此基礎(chǔ)上，進一步提出全截面特性和有效截面特性兩個概念，并建議對閉口型壓型鋼板正負向加載時的截面特性應(yīng)分別予以考慮。
［關(guān)鍵詞］閉口型壓型鋼板; 全截面特性; 有效截面特性; 極限彎矩法
中圖分類號：TU398+.9 文獻標識碼：A 文章編號：1002-848X(2014)12-0095-05
Experimental study on cross-section mechanical properties of closed profiled sheeting-concrete composite slab
Wang Qiuwei, Shi Qingxuan, Li Weitao
(School of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, China)
Abstract: The cross-section mechanical properties of 4 full-size closed profiled sheeting-concrete composite slab specimens were tested according to European Recommendations for the Testing of Profiled Metal Sheets. The load-deflection curve method and ultimate moment method were adopted to determine cross-section properties. The analysis results show that the results obtained by load-deflection curve method are larger than theoretical values, and the results obtained by ultimate moment method are in good agreement with theoretical values under the positive loading, while results are obvious different under the reverse loading. The main reason is that partial steel in compressed flange fails to function under the reverse loading. Two concepts of whole cross-section property and effective cross-section property were further proposed on the base of results, and the suggestions were given that cross-section properties of closed profiled sheeting-concrete composite slab should be separately considered under different loading directions.
Keywords: closed profiled sheeting-concrete composite slab; whole cross-section property; effective cross-section property; ultimate moment method
*國家自然科學(xué)基金項目(51178380，51108370)，高等學(xué)校博士學(xué)科點專項科研基金項目(20116120120004)，陜西省自然科學(xué)基礎(chǔ)研究基金項目(2012JQ7027)。
作者簡介：王秋維，博士，副教授，Email: wqw0815@sina.com。
參考文獻
［1］VON KARMAN T, SECHLER E E, DONNELL L H. The strength of thin plates in compression［R］. New York: American Society of Mechanical Engineers, 1932.
［2］高曉博. 壓型鋼板截面特性及抗彎性能試驗研究［D］. 西安：西安建筑科技大學(xué)，2004.
［3］白力更，馮永偉，程榮. 壓型鋼板截面特性計算方法的分析比較［J］. 鋼結(jié)構(gòu)，2011，26（10）：42-45.
［4］歐洲鋼結(jié)構(gòu)協(xié)會ECCS TC7委員會. 金屬壓型板試驗歐洲建議［R］.西安： 西安建筑科技大學(xué)鋼結(jié)構(gòu)研究所，2000.
［5］GB/T 228—2002 金屬材料室溫拉伸試驗方法［S］. 北京：中國標準出版，2002.
［6］GB 50018—2002 冷彎薄壁型鋼結(jié)構(gòu)技術(shù)規(guī)范［S］. 北京：中國計劃出版社，2002.
