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(合肥工業(yè)大學土木與水利工程學院， 合肥 230009）
［摘要］提出了一種外包花紋鋼壓型鋼板混凝土組合梁，為研究其受彎及滑移性能，進行了6根簡支組合梁的靜力加載試驗，重點考察抗滑移連接度的變化對組合梁受力性能的影響，對試件的荷載-撓度曲線、荷載-應變曲線和荷載-滑移分布曲線等進行了分析。試驗結果表明，隨著抗滑移連接度的降低，試件的抗彎承載能力和延性均隨之降低；組合梁中縱筋的設置將有效提高組合梁的抗彎承載力和抗滑移連接度，使得發(fā)生彎曲破壞的組合梁延性降低，發(fā)生滑移破壞的組合梁延性提高；考慮外包花紋鋼梁和混凝土之間的粘結滑移，給出了部分抗滑移連接外包花紋鋼-壓型鋼板混凝土組合梁的極限受彎承載力計算公式，理論計算值與試驗值吻合較好。
［關鍵詞］外包花紋鋼-壓型鋼板混凝土組合梁； 受彎性能； 抗滑移連接度； 極限承載力
中圖分類號：TU398文獻標識碼：A文章編號：1002-848X(2016)23-0055-06
Experimental study on checkered steel-encased concrete composite beam with profiled sheeting
Chen Lihua, Chen Leifei, Qu Chuang, Xu Runan
(School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China)
Abstract:A new type of checkered steel-encased concrete composite beam with profiled sheeting has been proposed. Static load tests on six simply-supported beams were carried out to study the bending and slipping performance of the composite beam. The influence the anti-slipping connection degree of on the mechanical properties of the composite beam was investigated emphatically, and the load-deflection curves, load-strain curves and load-slipping curves of specimens were analyzed. The test results show that the flexural bearing capacity and ductility of the composite beam decrease with the decrease of the anti-slipping connection degree, the setting of the longitudinal reinforcement can improve the flexural bearing capacity and the anti-slipping connection degree effectively, which also lead to a decrease of ductility to those beams appeared bending failure and an increase of ductility to those appeared slip failure. Calculation formulas of the ultimate flexural bearing capacity for partial anti-slipping connection composite beam with profiled sheeting have been proposed considering the cohesive action between the checkered steel plate and concrete, and the calculated values are in good agreement with the test results.
Keywords:checkered steel-encased concrete composite beam with profiled sheeting; flexural performance; anti-slipping connection degree; ultimate bearing capacity
作者簡介：陳麗華，博士，副教授，Email:hfclh1997@126.com。
