摘   要：为研究高强钢筋聚丙烯纤维混凝土梁在集中荷载作用下的受弯性能，对6根掺量不同的聚丙烯纤维矩形截面梁进行了试验研究，对比分析了高强钢筋聚丙烯纤维混凝土梁的受弯承载力、正常使用阶段的裂缝宽度及变形。结果表明，高强钢筋聚丙烯纤维混凝土梁受力性能和普通钢筋混凝土梁相同；高强钢筋聚丙烯纤维混凝土梁的受弯承载力、挠度及裂缝宽度均可以按照现行GB 50010—2010《混凝土结构设计规范》中相关公式计算。

Abstract: In order to investigate the bending behavior of polypropylene fiber concrete beam with high strength steel bars, 6 rectangular section beams with different dosages of polypropylene fiber are tested. The bending capacity, crack width and deformation of polypropylene fiber concrete beams reinforced with high strength steel bar are analyzed. The results show that the mechanical property of polypropylene fiber concrete beams reinforced with high strength steel bar is the same as the common reinforced concrete beams. The bending capacity, deflection and crack width of polypropylene fiber concrete beams reinforced with high strength steel bar can still be calculated according to GB50010-2010 <Concrete structure design specification>.