The Analysis Of Large Cantilever Wings Continuous Box Girder Transverse Force

With the development of City Road, people have more and more high requirements tothe linear, function and aesthetic of city interchange.Large cantilever wings of prestressedconcrete box girder, for its own advantages have been adopted more and more.But,becausethe cantilever concrete continuous box girder bridge with longer cantilever, the spatial stressis complex, the transverse effect is obvious, and the research stress characteristicsand construction technology of prestressed concrete wide box girder is still inadequate,alsohas not formed the perfect technical standard.Therefore,the research the transverseforce characteristic of this kinds bridge could do prepare for the formation oflarge cantilever wings design specification,and to promote thepopularization and applicationof this kind of novel and bridge, to upgrade the technology level ofresearch, design, construction industry.The thesis takes Zhuhai Hengqin bridge as the engineering background, research structureunder dead weight, vehicle load, transverse prestressing force the deformation law, at thesame time effects of box beam diaphragm spacing layout. The contents of this thesis aresummarized as follows:(1) use of Ansys software establish large concrete cantilever continuous box solid finiteelement model.(2) Through the stress test the construction stage of the Hengqin bridge to grasp the stressstate of the structure, and provide the basis for the evaluation of structural safety andconstruction safety, but also verify the correctness of themodel analysis.(3) Analysis the large cantilever wings of continuous concrete box girder’s horizontal stressperformance, and its distribution under dead weight,transverse prestressing, vehicle load.(4) Analysis the effect of diaphragm to large cantilever concrete continuous boxgirder transverse force, according to the arrangement and width of diaphragm.