Research On Some Key Technologies Of Simply Supported Continuous Beam Bridge

With the development of science and technology change rapidly, our country are more and more attention to the construction of infrastructure, rail and road bridge traffic construction more and more. Due to its simple construction, reasonable force, low cost and driving comfort and other aspects of the prestressed simple supported beam bridge, has achieved rapid development in China’s infrastructure construction, has become the most common bridge type. The prestressed construction plays a vital role in the construction of bridge, and prestressed reinforcement tension is the key process in construction, reasonable tensioning sequence plays a vital role in the acceptance of a bridge.Supported by the national key project of chang shen highway Jinbaotun to cha ri su dong wu jia bridge day Su freeway construction scheme, according to the given sequence of tensioning, and in-situ tension data, are analyzed using the finite element method, the determination of reasonable tension sequence effects on the bridge in the different cross combination the number of bridge, and the force condition after. To provide reliable scientific basis for similar engineering construction in the future.