Study On Three-dimensional Distortion Frame Pier Mechanical Characteristics And Externally Prestessed

In the idiosyncratic bridge structure, Bridge pier of three-dimensional distortedframework is a new style and Beautiful appearance. This type of bridge construction is thefrist in china, No standards and design experience can reference, Through to study thecharacteristics of the structure and the external prestressing, provided the future design andconstruction of the bridge the basisand the reference.Taking Dong Xu Lu bridge of tianjin economic development zone for background, Tosummarize the characteristics of the structure and mechanical characteristics.Build FiniteElement Model by solid65in ansys. To analysis Structure in differentpre-stress ofcomparison,and different span in this kind of Bridges applicability.The results show that, change the tensile stress value In the constant lane load and bridgegeometry size and material has an important influence to bridge. Especially in the absence ofthe prestressed, Local structure is easy to appear stress overrun. Prestressed effect make thestructure stress further optimized. First in a set load, Through the contrast analysis, Study theeffect of different prestressing to Structure of the Force. Also does not consider variable loadson how to use external prestressing to maximize the potential of structural resistance.Thispaper also analysis larger span of three dimensional distortion structure frame bridge pier,as well as the external reasonable prestressing in the different span. less than35meters, thestructure stress is rational.