| Corrugated steel webs prestressed concrete composite box girder with a steel plate by waveform replace ordinary concrete webs, bridge engineering novel steel-concrete composite structures. Through theoretical analysis and access to domestic and foreign literature, And the Milky Way Bridge in Chongqing flower of composite box girder with corrugated steel web PC continuous rigid frame bridge design as research subjects, twist and distortion effect so long- span PC composite box girder with corrugated steel webs under eccentric live loads generated to carry out more engineering measures detailed study, while improving PC composite box- girder with corrugated steel webs twisting and distortion effects and feasibility studies were presented.It begins on the structural features of PC composite box girder with corrugated steel webs were combed, combined with its own characteristics of composite box girder funded by the classical theory analysis and finite element analysis, peer-section of composite box girder with corrugated steel web PC Jane Supported Beam Bridge in torsion and distortion effects under eccentric live loads were compared. Since the classical theory to analyze complex bridge twisting and distortion has some limitations, which selected the most widely used finite element method MIDAS / FEA in the engineering field, calculated by the combination of corrugated steel web PC box girder caused distortion and twisting normal stress, shear stress, deflection amplification factor; reveal twisting and distortion effect of composite box girder with corrugated steel webs law; and made some improvements and distortion effects reverse engineering measures. Through the study of large span box girder with corrugated steel web PC continuous rigid frame composition analysis twisting and distortion effects of the bridge and improvement measures for the study and design of future similar bridge structure at home and abroad to provide reference. |
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