The Construction Control And Structural Analysis Of Continuous Frame Bridge

With the development of bridge engineering construction, the continuous rigid frame bridges develop rapidly and grow towards long span and more flexibility. It makes the analysis of the stability and temperature more important. So it is necessary to study the structural behavior and construction control technique of the continuous rigid frame bridge with long span and high piers.Taking the Muguaxi Bridge in Fengjie County of Chongqing as an engineering background and with the view of construction control, this paper carried on a research on the continuous rigid frame bridge. The thesis mainly includes calculation theory of structure, line-shape supervision, stress supervision and stability supervision, and so on. At the same time, some feasible operating methods and advice are brought forward.Firstly, the structural analysis methods of construction control for long-span bridges are discussed and the calculation method suitable for continuous rigid frame bridge is carried out.Secondly, the theory and method for elevation supervision and stress supervision of continuous rigid frame bridge are summarized. On the core issues, such as template elevation identification, deflection analysis, stress test error analysis, parameter adjustment.etc, a detailed theoretical analysis are made also.Finally, taking the largest cantilever construction state of Muguaxi Bridge as an example, we made a research on effect of temperature and stability of structure. And all so, the space stress of zero-bolck, key part of rigid frame bridge, was specifically analysed.The work done in this paper, provides us a technical support to learn more about the structural characteristic of continuous rigid frame bridge, control the construction appropriately, guarantee the safety during bridge construction and ensure a reasonable completion ultimately. The researches of this paper can be used as a reference for the construction control of similar bridge in future.