曲线连续刚构桥力学性能研究

AbstractWith the great development of mountain highways and the city overpass bridges,thelong-span and curved P.C.continuous rigid frame bridge has been built more and more inrecent years.It is appearance to present marked space characteristic of the internal force anddeformation because of flexure-torsion coupling and existing transversal deformation,so forthe long-span and curved P.C.continuous rigid frame bridge spatial characteristics curve ofin-depth study has the extremely vital significance.In this paper,based on a lot of document,the development of the curved bridge isdetailed discussed and the theory of the analysis and compution of the curved bridge issummarized.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 framebridge is constructed in the phase of completed construction,and the longitudinal distributionof the internal force and the deformation of the long-span and curved P.C.continuous rigidframe bridge under the self-gravity and prestress force.By changing the radius of curvature ofthe long-span and curved P.C.continuous rigid frame bridge,the influence of the central angleon the spatial characteric of the internal force and deformation of the bridge is analyzed.Keywords:curved girder bridge,flexure-torsion coupling,internal force,deformation-ii-