• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
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Volume 21 Issue 5
Oct.  2008
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Article Contents
PU Qianhui, GOU Hongye, ZHANG Junhua. Model Test of Corbel Cracking and Reinforcement of Urban Overpass[J]. Journal of Southwest Jiaotong University, 2008, 21(5): 648-653.
Citation: PU Qianhui, GOU Hongye, ZHANG Junhua. Model Test of Corbel Cracking and Reinforcement of Urban Overpass[J]. Journal of Southwest Jiaotong University, 2008, 21(5): 648-653.

Model Test of Corbel Cracking and Reinforcement of Urban Overpass

  • Received Date: 21 Mar 2008
  • Publish Date: 25 Oct 2008
  • In order to ensure the safe operation of urban overpasses,model tests of corbel cracking and reinforcement of the main bridge and ramp bridge of Niulong road overpass in Chengdu City were carried out respectively.By controlling the region,shape and size of cracks,corbel cracking of the overpass was simulated,and the factors to cause corbel cracking were analyzed.In addition,a comparative analysis of stresses in the corbel before and after strengthening prestressed reinforcement was made.Stresses under the anchorage of prestressed reinforcement were analyzed to investigate the effect of the reinforcement measure.The research shows that the reasons of corbel cracking are the great loss of prestress,the effect of loaded vehicles and the eccentric loading of vehicles,and the strengthening prestressed reinforcement measure is feasible.

     

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