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Existing bridge of Gerber girder statical system is considered for finite element modelling. Model is created with beam and plate elements, and spring and bedding support conditions. The results of the dynamic analysis are then compared with the data obtained in experimental measurements. Differences in the results are identified, and the FE model is updated by changing the support conditions, material properties and stiffness of the different elements. The new model is calibrated to reflect the structural behavior of the real bridge. In addition, reconstruction work was carried out on the real bridge, during which a new concrete layer to the deck was added, which changed the structural behavior of the bridge. The dynamic properties of the reconstructed bridge are then compared with the results of a second experimental measurement carried out after the reconstruction, which are yet to be revealed after the publication of this paper. A comparison between the results of several competing papers will be presented subsequently at the conference.

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Finite Element Model Updating Based on the Experimental Dynamic Properties of the Bridge and Prediction of Behavior After Reconstruction

  • 会议论文

  • 发表日期：

    2025年

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  • Andjelko Vlasic,
  • Mladen Srbic,
  • Ana Mandic Ivankovic,
  • Dominik Skokandic

摘要

Existing bridge of Gerber girder statical system is considered for finite element modelling. Model is created with beam and plate elements, and spring and bedding support conditions. The results of the dynamic analysis are then compared with the data obtained in experimental measurements. Differences in the results are identified, and the FE model is updated by changing the support conditions, material properties and stiffness of the different elements. The new model is calibrated to reflect the structural behavior of the real bridge. In addition, reconstruction work was carried out on the real bridge, during which a new concrete layer to the deck was added, which changed the structural behavior of the bridge. The dynamic properties of the reconstructed bridge are then compared with the results of a second experimental measurement carried out after the reconstruction, which are yet to be revealed after the publication of this paper. A comparison between the results of several competing papers will be presented subsequently at the conference.