Reinforcement Research Of Concrete Arch Bridge

Over the past few decades, our country’s economic level got a rapid development. Cor-responding Automobile traffic volume and load also increased significantly. Many bridges have suffered varying degrees of damage. Reinforce these old bridges, so that it can continue to present the public transport service has become an urgent problem. Combined the projects of Dalian ShengLi Bridge, This article mainly studied the following aspects:First:Testing the bridge exhaustively, giving specific detection test results through test-ing the deck department, superstructure, substructure and deck decor; Through the test results on the corresponding part assessed technical condition, then come to the conclusion of the overall technical condition of the bridge; Proof the need for bridge reinforcement.Second:Analysis the bridge by finite element, according to the site survey arch linear, build the finite element model, reduce the cross-section of the arch, make it meet to the realis-tic force conditions, the conclusion that the bridge is required to reinforce is verified by FEM, based on the conclusion I propose two different reinforcement scheme.Third:Analysis two programs by finite element, contrast reaction force, displacement, force, stress based on the result by FEM, by comparing the results and the principles of bridge strengthening, choose paste steel as the final program.Fourth:Research paste steel shear stress on the interface. For the selected program, analysis the shear stress on interface, according to the result of finite element entities model, give the shear stress on the contact surface of the concrete and steel. By juxtaposing the shear stress and the common structural adhesive shear strength of6202can obtained the conclusion that the shear strength meet the requirements, the structure is safe and reliable after the reinforcement.