Study On The Mechanical Properties Of The Curved Rigid Frame Bridge

With the great development of mountain highways and the city overpass bridges, the long-span and curved P.C.continuous rigid frame bridge has been built more and more in recent years.lt is appearance to present marked space characteristic of the internal force and deformation because of flexure-torsion coupling and existing transversal deformation,so for the long-span and curved P.C.continuous rigid frame bridge spatial characteristics curve of in-depth study has the extremely vital significance.In this paper,based on a lot of document, the development of the curved bridge is detailed discussed and the theory of the analysis and compution of the curved bridge is summarized.Based on Han jiang Bridge, by using the great spatial analysis software, Midas/ Civil the spatial finite element model of the long-span and curved P.C.continuous rigid frame bridge is constructed in the phase of completed construction,and the longitudinal distribution of the internal force and the deformation of the long-span and curved P.C.continuous rigid frame bridge under the self-gravity and prestress force. By changing the radius of curvature of the long-span and curved P.C.continuous rigid frame bridge,the influence of the central angle on the spatial characteric of the internal force and deformation of the bridge is analyzed.