PC钢棒预应力混凝土屋面板受力性能试验研究*
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方敏华（郑州大学综合设计研究院， 郑州 450002）［摘要］PC钢棒是一种用于预应力混凝土构件的新型中强螺旋肋钢丝，进行了7块采用PC钢棒作为预应力筋的1.5m×6.0m预应力混凝土屋面板受力性能的试验，对其承载力、抗裂和变形性能进行了分析，指出PC钢棒预应力混凝土屋面板受力良好，破坏前有明显预兆；受弯及受剪承载力、抗裂性和挠度等均可按现行规范的相关规定计算，均有较大的安全储备。［关键词］PC钢棒; 预应力屋面板; 承载力; 抗裂性能; 挠度中图分类号：TU378，TU317+.1 文献标识码：A 文章编号：1002-848X(2013)18-0074-04Experimental study on load bearing behavior of prestressed concrete roof-slabs using PC steel wiresFang Minhua(Zhengzhou University Multi-functional Design and Research Academy, Zhengzhou 450002, China)Abstract: PC steel wires are newly middle strength wires with helical rib that can be used in prestressed concrete members. Seven prestressed concrete roof-slabs of 1.5m×6.0m using PC steel wires under loading were tested. The bearing capacity, crack resistance and deflection behavior of the slabs under loading were analyzed. The results show that the prestressed concrete roof-slabs using PC steel wires have good behaviors under loading and can offer obvious warning before failure. The flexural and shear bearing capacity, crack resistance and deflection of the slabs could be calculated by the stipulations in the current design code of China and the calculated results are in safe side.Keywords: PC steel wires; prestressed concrete roof-slab; bearing capacity; crack resistance; deflection*国家科技支撑计划项目(2008BAE61B03)。作者简介：方敏华，高级工程师，Email：wxy670817@163.com。参考文献［1］刘立新，刘中琦. 螺旋肋钢丝（PC棒）预应力传递长度的试验研究［J］.郑州大学学报：工学版，2009（4）：11-14.［2］谢丽丽,李大为,刘立新，等.预应力螺旋肋钢筋粘结锚固性能的试验研究［J］.郑州大学学报：工学版,2008（2）:18-22.［3］刘中琦.预应力螺旋肋钢筋（PC棒）预应力传递长度的试验研究［D］.郑州：郑州大学，2009.［4］GB 50010—2010混凝土结构设计规范［S］.北京：中国建筑工业出版社，2011.［5］GB 50009—2012建筑结构荷载规范［S］.北京：中国建筑工业出版社，2012.
