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鉴于纤维复合材料(FRP)加固混凝土单向板的抗裂性能及裂缝宽度计算方法研究较少,通过7块碳纤维增强复合材料(CFRP)和玻璃纤维增强塑料(GFRP)布加固钢筋混凝土板,试验分析了纤维布种类、加固量及加固方式对单向板正截面抗裂性能的影响,导出了FRP加固钢筋混凝土单向板开裂弯矩的计算公式,验证了FRP加固混凝土梁裂缝宽度计算公式对单向板的适用性,为修订FRP加固技术规程、完善加固设计方法、拓展加固技术提供了参考依据。
In view of the less research on crack resistance and crack width calculation of FRP reinforced concrete one-way slab, seven reinforced concrete slabs reinforced with CFRP and GFRP were tested. The influence of the type of fabric, the amount of reinforcement and the mode of reinforcement on the normal cross-section crack resistance of the unidirectional plate are analyzed. The formula for calculating the moment of cracking of the unidirectional plate reinforced by FRP is deduced. The calculation formula of the crack width of the FRP- The suitability of the one-way board provides a reference for revising the technical regulations of FRP reinforcement, perfecting the reinforcement design method and expanding the reinforcement technology.