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FRP剥离破坏是FRP加固结构中较为常见的一种破坏模式,其脆性的破坏特征很大程度上限制了FRP这一高性能材料在加固领域的应用.之前的研究已经证明施加适当的锚固措施能有效的控制和延缓剥离破坏的发生,提高加固效果.FRP束锚固件是一种将FRP布滚卷或折叠后通过树脂胶植入预钻孔洞的锚固措施.但是目前针对其锚固性能的研究还不完善,尤其针对其与砌体材料之间锚固性能的研究还很匮乏.相比FRP束锚固混凝土试件,砌体材料(例如烧结粘土砖)由于尺寸较小会对共锚固性能产生很大影响.本文针对FRP束与砌体材料的锚固性能进行深入研究.首先针对FRP网格加固砌体结构优化了锚固件构造方式,进而采用拉拔试验方案,分析研究了FRP束锚固砌体材料的力学性能及其破坏机理,并通过试验研究分析了锚固件主要参数与锚固强度的相关关系,最后依据试验结论提出了相应设计建议.
FRP peeling failure is one of the most common failure modes in FRP reinforced structures, and its brittle failure characteristics largely limit the application of FRP, a high-performance material in the field of reinforcement.Previous studies have shown that applying appropriate anchoring measures Effectively control and delay the occurrence of stripping failure and improve the reinforcement effect.FRP bundle anchoring is a kind of anchoring measures that the FRP cloth is rolled or folded and then implanted into pre-drilled holes through resin glue.But the research on its anchoring performance Not perfect, especially for its anchoring performance between masonry materials is still scarce.Compared with FRP beam anchored concrete specimens, masonry materials (such as sintered clay brick) due to the smaller size of the co-anchoring performance will have a very In this paper, the anchoring performance of FRP beam and masonry materials is deeply studied.Firstly, the structure of anchor is optimized for the FRP grid reinforced masonry structure, and then the drawing test program is adopted to analyze the effect of FRP beam anchoring masonry material The mechanical properties and the failure mechanism of the anchorage were analyzed and the correlation between the main parameters of the anchorage and the anchorage strength was analyzed through experimental studies. Finally, according to the experimental results, Should design recommendations.