Calculation and Analysis of Stiffeners of Orthotropic Plates of Steel Box Girder
Orthotropic steel box girder has the advantages of large torsional stiffness,large lateral bending stiffness,strong integrity,high degree of industrialization,and short construction period.At the same time,the top plate can also be used as bridge decking,which is less than the same span steel box girder in terms of total steel consumption,and has been widely used in various bridge types.Howev-er,the steel plate used for the top plate of orthotropic steel box girder is thinner,which is a typical thin-walled structure,which is prone to distortion or excessive local deformation when the axial pressure is large,resulting in bridge collapse.The finite element calcu-lation software is used to establish a model to calculate and analyze the stiffener of orthotropic plate of steel box girder,it is found that the change of the center spacing of the longitudinal stiffener has no effect on the maximum transverse stress result at the middle of the top plate span,but has a greater impact on the second system stress,the maximum calculated stress of the orthotropic plate of the steel box girder increases with the increase of stiffener spacing,but the control stress of the stiffener plate decreases with the increase of stiff-ener spacing.
steel box girderorthotropic platesstiffenersfinite elementscalculation and analysis
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