碳纤维加固钢筋混凝土抗弯构件抗剥离试验研究

Study on Basic Problems of RC Flexural Member Strengthened with CFRP

碳纤维增强塑料(CFRP)加固修复混凝土结构在工程中的应用极为广泛,能有效提高钢筋混凝土构件的承载力以及变形能力,但提高只能在一定范围有效,采取锚固措施更能提高效果,X型箍锚固效果优于U型箍。试验采用11根通过粘贴不同层数的碳纤维布进行加固,同时比较U型锚固与X型锚固及无锚固三种情况下的加固效果。

RC beams Strengthened with CFRP is used widely in civil engineering world. Strengthened with the carbon fiber, the bearing capacity in the cross-section of reinforced concrete beams and slabs has been greatly improved. Affections of the carbon fiber layers are the most obvious and tremendous of all, the more, the better. However, this growth is not linear. Compared to U-Anchorage and non-Anchorage, X Anchorage is much better. The experiment has been carried on with 11 simple rectangular cross-section beams with the same size, the same steel rate except that 3 ones with only 1 layer of the carbon fiber. During the experiment, different layers of carbon fiber has been fixed to these structures, the strengthening effect of the U-Anchorage, X-Anchorage and non- Anchorage has been compared.