（天津城建大学土木工程学院，天津300384）

[摘要]  通过6根玄武岩纤维布加固损伤钢筋混凝土梁和2根未加固梁进行静力抗弯性能试验研究，研究了玄武岩纤维布加固既有损伤混凝土梁的破坏特征、抗弯承载力、挠度等，并分析了不同粘贴层数对加固效果的影响。试验表明:加固梁抗弯承载力随纤维布粘贴层数增加而提高，粘贴5层时提高约为80%，粘贴层数与提高幅度不成线性关系；随纤维布粘贴层数增加，加固梁发生纤维布剥离破坏风险增大。

[关键词]  玄武岩纤维布；加固损伤混凝土梁；抗弯性能

中图分类号：TU375.1       文献标识码：A           文章编号：1002-848X( )

作者简介：王海良，教授，硕导，Email:wanghailiang6601@126.com。

Experiment study on flexural behavior of damaged RC beams strengthened with basalt fiber

reinforced polymer

Wang Hailiang, Zhang Jing, Yang Xinlei, Ren Quanchang, Dong Peng

(School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384,China)

Abstract: Based on the monotonic loading tests on six beams strengthened with basalt fiber reinforced polymer and two control specimens, the failure mode, flexural bearing capacity, deflection, etc., were investigated, and the influence of layers of BFRP sheets was analyzed. Results showed that the bearing capacity of the damaged reinforced beams strengthened with basalt fiber was enhanced with the BFRP layers increasing, and the relationship was not linear; when five layers were pasted, the bearing capacity of the specimen increased by 80%；With the increase of paste layers of the fiber cloth, the peel failure mode occurred more frequently. 

Keywords: basalt fiber reinforced polymer; strengthened damaged RC beams; flexural behavior

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