The Experimental Research And Comparison With The Reinforced Methods In The Old Plate Of The Bridge In The CY Expressway

The main methods of Reinforced concrete structure include increasing cross-section, outsourcing steel, prestressed reinforced, to change the system of the reinforcement, stick-and-paste method of steel reinforcement and the method of sticking CFRP, which stick steel-and-paste method of steel reinforcement and sticking CFRP are efficient construction. WSGG(wave-shaped-gear-grip)is the equipment of our group developing. In this paper, a new approach is that WSGG anchor at both ends of CFRP and then use WSGG prestressing the CFRP to reinforce for bending.In this paper, the method of reinforcement tests on two suitable sizes for one-way plate of concrete reinforcement bending.The methods of strengthening are the following four ways: firstly direct paste CFRP; secondly CFRP plate will be folded into a narrow band and paste ,then the end fixed by WSGG; thirdly sticking the steel, and planting bar along the length of the specimen Spacing, fourthly CFRP will be folded into a zone, with the end anchored by WSGG then through WSGG prestressing the CFRP.Based on the data collecting and the phenomenon of the test ,it is compared that the basis of several methods by considering the parameters such as the ultimate load of plate, cracks, ductility, economic indicators. Test results show that the bending members reinforcement method merits are that the method of CFRP prestressed works well, stick steel reinforcement following, anchoring the end of reinforcement and the CFRP reinforced is three or four. This paper also has a research on the contruction method of CFRP pretressed by WSGG, preliminary finishing a more reasonable construction process and construction technology.