CAJ | 학술논문

通过6根玄武岩FRP筋混凝土梁与6根钢筋混凝土梁静力加载对比试验，研究不同纵筋配筋率的玄武岩FRP筋混凝土梁与钢筋混凝土梁的受力性能，分析其承载力变化过程、破坏形态、挠度变形与裂缝发展情况。试验结果表明，玄武岩FRP筋混凝土梁载荷-挠度曲线近似为直线，但仍然具有较好的延性；开裂载荷与极限载荷相比钢筋混凝土梁略低；裂缝宽度在2.5 mm以内，且分布对称均匀，裂缝间距略大于钢筋混凝土梁；玄武岩FRP筋混凝土梁产生的挠度较大，应提高玄武岩FRP筋与混凝土之间的粘结性能，最大限度发挥玄武岩FRP筋抗拉强度高的特点。
통과6근현무암FRP근혼응토량여6근강근혼응토량정력가재대비시험，연구불동종근배근솔적현무암FRP근혼응토량여강근혼응토량적수력성능，분석기승재력변화과정、파배형태、뇨도변형여렬봉발전정황。시험결과표명，현무암FRP근혼응토량재하-뇨도곡선근사위직선，단잉연구유교호적연성；개렬재하여겁한재하상비강근혼응토량략저；렬봉관도재2.5 mm이내，차분포대칭균균，렬봉간거략대우강근혼응토량；현무암FRP근혼응토량산생적뇨도교대，응제고현무암FRP근여혼응토지간적점결성능，최대한도발휘현무암FRP근항랍강도고적특점。
Static loading tests were performed for six basalt FRPs reinforced concrete beams and six reinforced concrete beams. The effects of different longitudinal reinforcement ratios on the mechanical behavior of basalt FRP reinforced concrete beams and reinforced concrete beams were studied. The flexural capacity,failure mode,flexibility deformation and crack distribution were analyzed. The test shows that load-deflection curve of the basalt FRP reinforced concrete beams is almost a straight line,but still performs a better ductility at the late loading stage.Cracking load and ultimate load are lower than that of the reinforced concrete beams, but crack width can be controlled within 2.5 mm,and the crack spacing is wider than that of the reinforced concrete beams. The deflection of the basalt FRP reinforced concrete beam is larger than that of reinforced concrete beams, so better non-peeling basalt FRP tendons should be made to ensure adequate bond strength with the concrete,which can maximize high tensile strength of basalt FRP tendons.