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DOI: 10.15862/04SATS125 (https://doi.org/10.15862/04SATS125)

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Baranov T.M., Zainagabdinov D.A., Zuev M.V. Comprehensive analysis of deformation monitoring data for highway bridges. Russian Journal of Transport Engineering. 2025; 12(1). Available at: https://t-s.today/PDF/04SATS125.pdf (in Russian). DOI: 10.15862/04SATS125

Comprehensive analysis of deformation monitoring data for highway bridges

Timofey M. Baranov, Damir A. Zainagabdinov, Mikhail V. Zuev

Irkutsk State Transport University, Irkutsk, Russia

Corresponding author: Timofey M. Baranov, e-mail: Baranov-87@yandex.ru

Abstract. This article explores an approach to analyzing deformation monitoring data for highway bridges with continuous beam systems. It examines the fundamental principles of processing data on relative deformations of load-bearing elements under temporary and permanent loads, obtained from a monitoring system. The structure of a continuous monitoring system is presented, for which this data evaluation approach is proposed. The system consists of an instrumental-measuring circuit for stress control, a data analysis module, and a decision-making circuit. The article focuses on the analysis module and proposes a specific algorithm for its operation.

As an illustration, a planar problem formulation is considered. The proposed algorithm involves replacing unknown loads on the roadway with equivalent uniformly distributed loads per bridge span. The magnitude of these equivalent loads is determined based on measured stresses in beam flanges and remains constant within each span. The combination of such loads across all spans achieves force equivalence with real roadway loads.

This approach became feasible through the application of influence line loading mechanisms and effectively solves the inverse problem of determining loads from known forces at multiple measurement points. After identifying equivalent loads, forces are calculated in beam sections without sensors, providing a complete picture of the stress-strain state. By comparing these forces with reference load values, load class diagrams along the entire beam length can be generated.

The article concludes with recommendations for further implementation and development of load class calculation methods using deformation monitoring data.

Keywords: highway bridges; monitoring system; digital twins; strain gauges; influence lines; load class; equivalent loads

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