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为研究装配式矩形螺旋箍筋RC梁的抗剪性能,设计并制作了3根配置矩形螺旋箍筋RC梁和3根配置普通分离式箍筋RC梁,研究了剪跨比、配箍率等因素对构件的抗剪承载力、整体性的影响。结果表明,与配置普通分离式箍筋RC梁相比,当剪跨比为1.51、2.03时,装配式矩形螺旋箍筋对RC梁的斜截面承载力有所提高;当剪跨比为2.5时,斜截面承载力略有降低;装配式矩形螺旋箍筋对RC梁的挠度无明显影响,但可以增强混凝土梁的整体性;配置矩形螺旋箍筋RC梁可以节约18%的箍筋用量。
In order to study the shear resistance of fabricated rectangular helical stirrup RC beams, three RC beams with rectangular spiral stirrups and three RC beams with separate stirrups were designed and fabricated. The effects of shear span ratio, stirrup ratio, etc. Influence of Factors on Shear Capacity and Integrity of Components. The results show that when the shear span ratio is 1.51,2.03, the load-bearing capacity of the assembled rectangular spiral stirrup on the RC beam is increased compared with that of the conventional split stirrup RC beam. When the shear span ratio is 2.5 , And the load-carrying capacity of the inclined section decreases slightly. The assembled rectangular spiral stirrup has no significant effect on the deflection of the RC beams, but can enhance the integrity of the concrete beams. Rectangular spiral stirrup RC beams can save 18% of stirrups.