CFRP布加固预裂钢筋混凝土梁的抗裂性及裂缝宽度的探讨

The Calculating Mode on the Crack of Pre-splitting Reinforced Concrete Beams Strengthened by CFRP

采用试验研究与理论分析相结合的方法对CFRP布加固预裂钢筋混凝土梁的抗裂性能进行了相关研究。探讨了CFRP布加固钢筋混凝土梁在短期荷载作用下裂缝的发展规律以及裂缝发展的影响因素;分析了CFRP布加固钢筋混凝土梁在短期荷载作用下的平均裂缝宽度、最大裂缝宽度的计算问题。可为修订CFRP加固技术规程,完善加固设计方法,拓展加固技术提供参考。

Theoretical analysis and experimental analysis are combined to investigate the crack resistance of pre-splitting reinforced concrete beams strengthened by the CFRP cloth.the crack law of development and the crack contributory factor of the reinforced concrete beams in the short-term load are discussed, the calcuiating mode of the average crack width and the maximum crack width are analyzed on the reinforced concrete beams in the short-term load.All of those are very useful to revise the CFRP reinforcement technology standard, consummates the method of reinforcement designing and develop the reinforcement technology in the future.