Deformation Analysis Of Continuous Curved Rigid Frame Bridge With Long-Span And High-Pier

Continuous curved rigid frame bridge with long-span and high-pier combines the mechanical properties of curved girder bridge and rigid frame bridge, and with its characteristic of flexibility caused by long-span and high-pier, its structural analysis becomes more complex. Based on Tai zaogou Bridge, the MIDAS/Civil finite element software by Korea is adopted in this thesis to analyse the deformation features of continuous curved rigid frame bridge with long-span and high-pier. A preliminary nonlinear analysis of continuous curved rigid frame bridge with long-span and high-pier is also provided in the thesis. The main contents consist of three parts:1. Describe the principles of setting camber in the process of cantilever construction and deduce the general formulas for its calculation.2. Whereas construction stages, the dead load, prestressing force, traveling carriage load, the secondary dead load and moving vehicles load are considered separately in the deformation analysis to correctly control the setting of camber and guarantee the bridge deck and pier to reach the ideal shape.3. Introduce geometric nonlinear analysis method, and compare the deformation calculated with linear and nonlinear method under the two load cases: the longest cantilever case in construction stage and the moving vehicle load case in service stage.