基于实体破坏性试验的碳纤维加固梁体方法研究

Research on External Carbon Fiber Reinforcement Beam by Entity Destructive Testing

以旧桥拆除的梁体为研究对象,对相似状态的梁体分别采用碳纤维加固梁体后的破坏性试验。通过对加固前后的试验结果进行分析,得出在没有尺寸效应的影响下,碳纤维加固梁体的方法只能增加梁体的延性,对梁体的刚度没有明显的增加,同时对提高梁体的承载力有限。

Taking some beams from old bridge torn down as a case,the destructive tests have been conducted on the similar beams strengthened by carbon fiber.Through the comparison of the test results before and after reinforcement and in the absence of size effects,the method of carbon fiber reinforced beams only increases the ductility of the beam,has no significant effect on the stiffness of the beam and is limited to improve bearing capacity of the beam.