Civil Engineering Association

• Author(s): LI Jing-bin,CHEN Huai,GE Su-juan
  
• Published By: School of Civil Engineering,Zhengzhou University
  
• Quality: Unspecified
  
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• Abstract: The Zhenfengou Bridge is a supported-continuous prestressed concrete small box-girder bridge,which is bearing replacements after damaging,is taken as the object to study in this thesis.The finite element software MIDAS/Civil is applied to set up the bridge's FEM model and the bridge is calculated during the whole construction stages.Two kinds of jack-up construction programs are considered,one is the whole jack-up construction program and the other is the partial jack-up construction program.The shear forces of the pier top,the bending moments of the midspan and the bending moments of the pier top both in the two programs are compared.The calculation results show,the 8mm maximum jack-up route is rational.From the opinion of the bridge's superstructure load bearing reasonability,the whole jack-up construction program is better than the partial jack-up construction program.The calculation results can be a reference for the similar project.
  

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