Study Of Old Typical Bridge Reinforced Technology In Jilin Province

In the steel bar-concrete bridge construction materials deterioration and load-bearing potentiality decreasing will happen with the time due to some factors such as, natural environment, variation of the usage function, damage accumulation. With the time going, a large number of steel bar-concrete bridges will be aging. These will have great effect on the security, applicability and durability of construction. It is urgent to find a fast, effective, and reliable reinforcement repairment method to solve the reinformation of the danger and old road steel bar-concrete bridges. This paper is about the study of several reinformed technology suitable in Jilin Province considering the existing bridges in the province. This paper include the following:Chaper1 mainly talks about the study background, study significance and introduces the main questions in the road bridges and the conventional reinformation methods.Chaper2 presents adhesive steel plate, external prestressed and adhesive carbon fibor and their characterization, construction technology, design calculation method. This part analyses the stress and deformation state under the external force after the reinformation with the three reinformation methods using Madis.Chapter3 examine the reinformed effect of adhesive carbon fibor method on the existing bridges according to the real engineer. The results carbon fibor strengthening the old bridges can improve the load-bearing potentiality of the constructions, control the deformation and stress of the constructions and decrease the fissures.