Simulation Analysis On Construction Control Of Long-span Continuous Rigid Frame Bridges

In recent years, with the rapid development of continuous rigid frame bridge, which span is increasing. Because of continuous rigid frame bridge has the advantages of a driving comfort, convenience of construction, cis-bridge to the bending stiffness and cross-bridge to the torsional rigidity, and so on. This bridge-type has been more and more widely used in long-span bridge construction.In the long-span continuous rigid frame bridge construction process, usually use hanging basket-situ cantilever construction method of symmetry. The prestressed continuous rigid frame bridge due to the force and deformation of the structure is very complicated. In order to ensure construction quality and construction safety, so that continuous rigid frame bridge closer to the actual state of the design to maximize the state to ensure that the bridge into the bridge emperor linear and force to meet the design requirements。A reasonable construction of a bridge between science and control is essential to link and measures.This thesis take the Mozitan bridge for example, establish FEM simulation model by Midas/Civil finite element software. The stresses and deformation of the bridge in different construction stages are calculated. The calculated results are compared with the field test result of linear control and stress control in construction process. Exploring the law of tress variety of bridge's key parts in construction process, and the value of the finite element software in engineering construction.