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根据5根玻璃纤维筋增强混凝土梁的抗弯承载力试验,得出截面应变符合平截面假定的结论,其破坏模式有受拉破坏和受压破坏两种,分别由玻璃纤维筋断裂和受压区混凝土压碎控制;由荷载-应变曲线和荷载-挠度曲线可以看出,玻璃纤维筋配筋率的增加,可以在一定程度上提高抗弯承载力和降低截面挠度,因此合理地控制玻璃纤维筋的配筋率是设计中必须考虑的重要因素之一.此外,玻璃纤维筋表面喷砂可有效地提高玻璃纤维筋与混凝土的粘结力,有助于应力的传递和重分布.
According to the test of flexural capacity of five reinforced glass fiber reinforced concrete beams, it is concluded that the strain of the section accords with the assumption of flat section. The failure modes are both tensile failure and compression failure, which are caused by the fracture and compression It can be seen from the load-strain curve and load-deflection curve that the increase of the fiberglass reinforcement ratio can improve the flexural capacity and reduce the deflection of the section to a certain extent, so the reasonable control of the fiberglass The reinforcement ratio of the tendons is one of the important factors that must be considered in the design.In addition, the surface blasting of the glass fiber reinforcement can effectively improve the bond strength between the glass reinforcement and the concrete and contribute to the stress transfer and redistribution.