Study On The Mechanical Properties And Deformation Of The Curved Rigid Frame Bridge

The curved rigid frame bridge combining with the stress of the curved girder Bridges and rigid features,such as the pier and beam consolidation, structure good entirety and the overall rigidity is small, the piers flexible pier allow large displacements, outer loads can produce coupling torque, stress non-uniform, etc. Because the bridge itself flexure-torsion coupling effect, makes a long-span curve continuous rigid frame Bridges stress and deformation are presenting significant space characteristics, so when the pier high and curvature radius are changed, the mechanical properties of the curved girder Bridges has very important practical significance.In this paper,based on a lot of document, the development and the theory of the analysis and compution of the high piers of the curved girder bridges is detailed discussed and summarized. Based on Han jiang Bridge, establish a finite element model,aiming at the continuous rigid frame bridge stage in under the action of gravity and the prestressing force distribution and deformation condition were analyzed, and summarizes curve of long span continuous rigid frame Bridges internal force and deformation regularity of distribution;By changing the radius and its piers height of the Curved 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, and we obtain the change rule what is caused by the curvature radius and the pier height's change of the high piers of long-span curve continuous rigid frame bridge.