The Control And Simulation In Construction Of Long-Span Cable-Stay Bridges

In this thesis, at first, construction control on long-span bridges both domestic and abroad is discussed. Then the theory, method, principle and contributing factor of long-span bridges construction control are introduced. It also makes an elaborate analysis and research on construction control(monitoring and control)in the construction stage. Finally, based on The Third Bridge of JiaLing River in NanChong, the structure engineering software of MIDAS/Civil was used to set up the model of the bridge, which is simulated and analyzed in the construction process.The thesis makes the design bridge states(cable stress and line style) as reasonable finished bridge states, then adopted the backward analysis-forward interaction method to determining reasonable initial cable stress. In the process of construction state, the imitated measure of structure component is discussed and the plane model is analyzed on the construction feature of the long-span bridge. Four stages are used to model the every standard segment. Which are: the erection of form traveler; placing the segmental concrete and jacking the tendons; moving form traveler. At the same time the result of the simulated analysis is discussed.