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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2014  >  14(6): 10-16
NIU Yan-wei, HAO Jing-xian, SU Ying-ping, YAMAO Toshitaka, HUANG Ping-ming. Rigidity quantitative identification method of bridge based on step-forward loading[J]. Journal of Traffic and Transportation Engineering, 2014, 14(6): 10-16.
Citation: NIU Yan-wei, HAO Jing-xian, SU Ying-ping, YAMAO Toshitaka, HUANG Ping-ming. Rigidity quantitative identification method of bridge based on step-forward loading[J]. Journal of Traffic and Transportation Engineering, 2014, 14(6): 10-16.
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Rigidity quantitative identification method of bridge based on step-forward loading

  • 1.

    School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China

  • 2.

    Shanxi Transportation ResearchInstitute, Key Laboratory of Highway Construction and Maintenance Technology in Loess Region of Ministry of Transport, Taiyuan 030006, Shanxi, China

  • 3.

    CCCC Highway Consultants Co., Ltd., Beijing 100088, China

  • 4.

    Xi'an Municipal Engineering Design and Research Institute Co., Ltd., Xi'an 710068, Shaanxi, China

  • 5.

    Graduate School of Science and Technology, 860-8555, Kumamoto, Japan

More Information
  • Author Bio:

    NIU Yan-wei (1981-), male, lecturer, PhD, +86-29-82336336, niuyanwei@chd.edu.cn

  • Received Date: 2014-06-12
  • Publish Date: 2014-12-25
    Abstract
  • Aiming at the rigidity identification of bridge, based on general bridge loading test, a step-forward loading method was proposed for bridge rigidity quantitative identification.Rigidity effect factor matrix was introduced, measured deflection variation matrix and calculated deflection variation matrix were established by step-forward loading and finite element model respectively, then the deviation was controlled to get convergence to identify rigidity effect factor, and related analysis flow was illustrated.Based on a project of tie-arch bridge, the identification accuracies of single zone damage and multi-zone damage of bridge were verified.Test result shows that the accuracy of bridge identification is 6.6% except the zones near arch feet.The rigidity of concrete bridge can be located and quantitatively identified based on step-forward loading method.Using polynomial fitting to correct the measured data can improve the identification accuracy, and the convergence level increases by 18%.

     

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