碳纤维布补强加固钢筋混凝土板的研究与工程应用

Research and Application of New Technique of Repairing&Strengthening Reinforced Concrete Slabs with Continuous Carbon Fiber Sheet

通过碳纤维布补强加固钢筋混凝土板的试验,研究了碳纤维布对钢筋混凝土板受弯性能的影响.试验研究表明,使用碳纤维布提高钢筋混凝土受弯构件正截面承载力的方法是有效的,试验板的受弯性能明显改善.基于有关的理论分析,探讨了碳纤维布补强加固钢筋混凝土板受弯承载力的设计方法.并在此基础上应用碳纤维布对某实际工程中的钢筋混凝土板实施了补强加固.

Based on the test of the reinforced concrete slabs strengthened with continuous carbon fiber sheet(CFS),the effectiveness of the new method by using the CFS on repairing&strengthening reinforced concrete slabs was studied.Experimental results indicate that CFS can evidently increase the yield load when the longitudinal reinforcement reaches its yield point and,especially,the ultimate load of the reinforced concrete slabs subjected to bending.A simplified design formula was also presented in the paper.Finally,this paper also offered an application of the CFS technique for strengthening a reinforced concrete slab in a building.