紫外线作用对BFRP布加固钢筋混凝土梁抗弯性能影响试验研究

对不同紫外线照射时间3组外贴不同层数玄武岩纤维布RC梁进行静力抗弯试验,研究了纤维布粘贴层数和紫外线照射时间对钢筋混凝土梁抗弯极限承载力、刚度、破坏形态影响,结果表明:紫外线照射会降低试验梁抗弯刚度和极限承载力,且粘贴层数越多,降低幅度越大;紫外线照射对试验梁破坏形式影响不显著。

EXPERIMENTAL STUDY OF THE ANTI-BENDING PERFORMANCES ABOUT BFRP REINFORCED CONCRETE BEAMS UNDER THE ACID ENVIRONMENT

Do static bending test for different UV irradiation time of 3 groups with different layer of basalt fiber reinforced concrete beams,study the effect of ultimate bearing capacity about anti-bending performances、stiffness and failure mode about damage of reinforced concrete beam on basalt fiber cloth layers and UV irradiation time. The result showed that: UVirradiation reduces test beam flexural stiffness and ultimate bearing capacity,and the more layers,the decreasing amplitude is large; the impact of damage in the form of the test beam was not significant under the acid environment.