Structural Engineering and Mechanics

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Experimental and analytical behavior of a prestressed U-shaped girder bridge

  • Wu, Xun (Department of Bridge Engineering, Tongji University) ;
  • Li, Hui (Department of Bridge Engineering, Tongji University)
  • Received : 2015.07.08
  • Accepted : 2016.12.22
  • Published : 2017.02.10
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Abstract

This paper presents an experimental and analytical investigation on the behavior of a U-shaped girder subjected to operation, cracking and ultimate loads. A full-scale destructive test was conducted on a U-shaped girder to study the cracking process, load-carrying capacity, failure mechanism and load-deformation relationships. Accordingly, the tested U-shaped girder was modeled using ANSYS and a non-linear element analysis was conducted. The investigation shows that the U-shaped girder meets the specified requirements of vertical stiffness, cracking and ultimate load capacity. Unfavorable torsional effect is tolerable during operation. However, compared with box girders, the U-shaped girder has a more transverse mechanical effect and longitudinal cracks are apt to occur in the bottom slab.

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References

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