Testing Evaluation And Reinforcement Research Of Exiting Multi-Span Reinforced Concrete Arch Bridge

In recent decades, a large number of reinforced concrete arch bridges are built in our country. The construction of many bridges has undergone tremendous changes in the social and economic. The actual use conditions of bridges have undergone tremendous changes compared to the initial design. Because of the low design standards and the poor quality of construction of the earlier bridges, many bridges overload and then become ill and unsafe bridges. Testing, assessment, reinforcement and the construction control through what to ensure the safety of bridges in the process of construction must be carried out actively. This can ensure that the existing reinforced concrete arch bridges are in normal operation and safe to use, at the same time, provide decision-making basis of conservation and reinforcement for bridge management department. This work has become the urgent task which bridge workers must face at present.This thesis summarized the development status of reinforced concrete arch bridge and strengthening methods and the significance of existing reinforced concrete arch br idge reinforcement is elaborated, used a multi-span reinforced concrete arch bridge a s an project example. The whole process of reinforced concrete arch bridge reinforce ment is analysed, based on the static and dynamic analysis, combing with the evaluat ion calculation defined the reinforce method, by the construction process simulation analysis and calculation are carried on, the structure mechanical characteristics in the process of construction is demonstrated, which ensure the safety of construction and resume the use function.