Structural Analysis Of Long-Span Continuous Curved Bridge With Small Radius

With the acceleration of China’s rapid economic development and urbanization,urban traffic has also entered an unprecedented period of development.In the modern urban bridge projects,especially the urban interchange projects and the urban viaduct projects,the long-span curved bridge with the small radius is often inevitably used.In this thesis,the research is basing on a long-span curved steel box girder bridge with small radius in the upcoming construction of the Chengdu Second Ring Expressway Project.In this thesis,based on a lot of documents,the development of curved bridge,domestic and international research profile,structure,cross-sectional form,bearing layout are discussed. A combined finite element model involving beam element for the bridge is developed using Midas/Civil2010.Based on the results of the beam element model,the author analyzes the behavior including dead load,live load.temperature load,bearing settlement and combinations of these loads.The author also analyzes the vibration character of this bridge. By contrasting the calculation of the beam element.the author also analyzes the behavior of the curved bridge of combinations of those loads by the grillage method.In the last chapter,the author combines the actual situation and analyzes the impact of the behaviour of the curved bridge by changing the relevant parameters.By contrasting the results of those parameters,the parameter which has greatest impact on the curved bridge can be found.Therefore.the behaviour of the long-span continuous curved bridge with small radius is comprehensively understood,and analyzing method of this type bridge is also preliminarily comprehended by the author.