In this study, a total of 105 shear specimens of fiber reinforced polymer bars with different reinforced phases, including the glass fiber, the hybrid of carbon fiber with glass fiber, and the hybrid of steel wire with glass fiber, were prepared to systematically investigate their transverse shear properties. The surface configuration of specimens, the performance characteristics and distribution pattern of reinforced phase were mainly regarded as variables. The results showed the shear strengths of glass fiber reinforced polymer bar specimens increased from 247.9 MPa to 263.5 MPa as the rib depth changed from shallow ribs to deep ribs, and their ultimate strain decreased from 0.374 to 0.328 with the increase in rib spacing from 8 mm to 16 mm. The shear strengths of carbon/glass hybrid fiber reinforced polymer (C/G HFRP) bar specimens declined from 247.4 MPa to 226.3 MPa as the distribution pattern of carbon fiber changed from centralized distribution to dispersed distribution. The shear strength of C/G HFRP bars decreased from 256.5 MPa to 247.4 MPa as the ratio of glass fiber to carbon fiber ranged from 0:1 to 1:4, and increased from 138.7 MPa to 214.8 MPa for steel wire/glass HFRP bars as the volumetric fraction of steel wire replacing glass fiber increased from 0 to 33.3%. This indicated that the surface configuration of specimen, the distribution pattern of fiber, and the performance characteristics of reinforced phase have great effects on the ultimate strain and shear strength of FRP bars, respectively.

在本研究中，共制备了 105 个不同增强相的纤维增强聚合物棒的剪切试样，包括玻璃纤维、碳纤维与玻璃纤维的混合体以及钢丝与玻璃纤维的混合体，以系统地研究它们的性能。横向剪切特性。试件的表面形态、增强相的性能特征和分布模式主要被视为变量。结果表明，玻璃纤维增​​强聚合物棒材试件的抗剪强度随着肋骨深度由浅肋向深肋变化而从247.9 MPa提高到263.5 MPa，随着肋间距从8 mm增加，其极限应变从0.374降低到0.328到 16 毫米。随着碳纤维的分布模式从集中分布变为分散分布，碳/玻璃混合纤维增强聚合物（C/G HFRP）棒材试样的剪切强度从247.4 MPa下降到226.3 MPa。随着玻璃纤维与碳纤维的比例从 0:1 到 1:4，C/G HFRP 钢筋的剪切强度从 256.5 MPa 下降到 247.4 MPa，而钢丝/玻璃 HFRP 钢筋的剪切强度从 138.7 MPa 增加到 214.8 MPa随着钢丝替代玻璃纤维的体积分数从0增加到33.3%。这表明试样的表面构型、纤维的分布方式和增强相的性能特征分别对FRP筋的极限应变和剪切强度有很大影响。3 MPa，碳纤维的分布格局由集中分布变为分散分布。随着玻璃纤维与碳纤维的比例从 0:1 到 1:4，C/G HFRP 钢筋的剪切强度从 256.5 MPa 下降到 247.4 MPa，而钢丝/玻璃 HFRP 钢筋的剪切强度从 138.7 MPa 增加到 214.8 MPa随着钢丝替代玻璃纤维的体积分数从0增加到33.3%。这表明试样的表面构型、纤维的分布模式和增强相的性能特征分别对FRP筋的极限应变和剪切强度有很大影响。3 MPa，碳纤维的分布格局由集中分布变为分散分布。随着玻璃纤维与碳纤维的比例从 0:1 到 1:4，C/G HFRP 钢筋的剪切强度从 256.5 MPa 下降到 247.4 MPa，而钢丝/玻璃 HFRP 钢筋的剪切强度从 138.7 MPa 增加到 214.8 MPa随着钢丝替代玻璃纤维的体积分数从0增加到33.3%。这表明试样的表面构型、纤维的分布方式和增强相的性能特征分别对FRP筋的极限应变和剪切强度有很大影响。随着钢线替代玻璃纤维的体积分数从 0 增加到 33.3%，钢线/玻璃 HFRP 钢筋从 138.7 MPa 增加到 214.8 MPa。这表明试样的表面构型、纤维的分布方式和增强相的性能特征分别对FRP筋的极限应变和剪切强度有很大影响。随着钢线替代玻璃纤维的体积分数从 0 增加到 33.3%，钢线/玻璃 HFRP 钢筋从 138.7 MPa 增加到 214.8 MPa。这表明试样的表面构型、纤维的分布方式和增强相的性能特征分别对FRP筋的极限应变和剪切强度有很大影响。