Diseases of Curved Continuous Bridge and Temperature Effect

The coupling effect of moment and torque will occur in the curved continuous bridge due to the impact of curvature, therefore, the computation of internal forces and deformation is far more complicated than the straight line bridge, and many problems have emerged in curved continuous box-girder bridge in practical engineering. Taking an actual curved continuous box-girder bridge as an example, the features of loading and deformation of this bridge were computed and analyzed under the temperature action by use of finite element method. Numerical computation results show that the temperature action has direct impact on the internal force of curved continuous bridge, and diseases are hence easily induced. Obviously, the relevant provision about the vertical temperature difference of concrete box-girder in the former standard was not reasonable. It was also found that the vertical temperature difference between top flange and bottom flange is the main reason that results in the torsion of curved continuous box-girder bridge, and the integral temperature rise is the main cause that results in the radial displacement.The conclusions obtained have obvious significance both in theory and application to the design and analysis of such curved continuous box-girder bridges.

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  • Authors:
    • GUANG-HUI, L I
    • ZHENG-WU, Y U
    • YONG-ZHONG, WANG
  • Publication Date: 2008-1

Language

  • Chinese

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Filing Info

  • Accession Number: 01155193
  • Record Type: Publication
  • Source Agency: Transport Research Centre (CDV)
  • Files: ITRD
  • Created Date: Apr 23 2010 10:56AM