通过试验,研究并分析了在冻融循环、干湿循环和持续荷载共同作用下,高强混凝土与CFRP(碳纤维增强复合材料)粘结界面的长期性能,为外贴CFRP加固海岸与近海高强混凝土结构的耐久性设计提供依据。通过分析加载剥离过程中的破坏方式、峰值荷载、加载端劣化剥离、有效粘结长度及粘结滑移关系等数据,研究了界面劣化规律。结果表明:由于高强混凝土有较高抗冻性,单纯冻融和干湿循环对界面的劣化作用很小;但是加上持续荷载后,粘结性能的劣化变得非常显著,且主要表现为加载端劣化剥离区域长度的增加。 Through experiments, the long-term performance of high-strength concrete and CFRP (carbon fiber reinforced plastic) bonded interface under freeze-thaw cycle, wet-dry cycle and continuous load was studied and analyzed. The results showed that the CFRP reinforced longshore and offshore high-strength concrete structure Provide the basis for durability design. By analyzing the data of the failure mode, peak load, delaminated loading at the loading end, the effective bond length and the relationship between the bond and slip during the process of loading and unloading, the interface degradation rules were studied. The results show that, due to the high frost resistance of high-strength concrete, the effect of simple freeze-thaw and dry-wet cycles on the interfacial degradation is very small. However, with the continuous load, the degradation of the adhesive properties becomes very significant, End Degradation Peeling area length increases.