针对加固时已卸载的混凝土受弯构件开展碳纤维布(CFS)加固性能研究。共进行了17根混凝土梁的试验,包括2根对比梁和15根CFS抗弯加固梁。研究了开裂程度、CFS加固层数对加固构件的破坏形态、承载力等力学性能的影响。总结了CFS加固开裂混凝土受弯构件时曾加荷载的上限范围,给出了CFS加固合理用量的建议。 Aiming at the CFS reinforcement performance of concrete flexural members unloaded during consolidation. A total of 17 concrete beams were tested, including two comparative beams and fifteen CFS beams. The degree of cracking, the number of CFS reinforcement layers on the mechanical properties such as failure morphology and bearing capacity of the reinforcement were studied. The upper limit of the load that CFS used to reinforce the flexural members is summarized, and the reasonable dosage of CFS reinforcement is given.