钢筋混凝土外包覆玻璃钢梁的研究

The research on FRP enveloped reinforced concrete beam

通过在钢筋混凝土结构表面包覆玻璃钢后形成的复合梁的正截面弯曲试验,研究了复合梁在弯曲应力下的承载能力、应力分布、挠度变化、破坏过程及机理等。试验证明,经再复合后,梁内各相材料能够协同工作,可大幅度地提高其承载能力,刚度也有一定提高,还能防止或抑制混凝土的裂缝开展。是一种合理的结构补强措施。

By the normal section bending strength tests of the composite beam which is made of reinforced concrete structure enveloped by FRP, the load-bearing capacity, stress distribution, deflection change , deformation process and mechanism under bending stress are studied. It can be drawn from the recomposition, that the different material phases in tne beam can behave concordantly which can increase the load-bearing capacity greatly, improve the rigidity, protect or restrain the reinforced concrete from crack expansion.