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Steel railway bridges have high durability. However, the condition of the bridge is susceptible to damage due to loads and the environment that affect the performance of the bridge structure. The performance of the steel railway bridge structure can be reviewed from the factors of deflection value, strain, and natural frequency. This research aims to analyze the performance of the existing bridge superstructure. On existing bridges, the actual camber is smaller than the planned camber, so it is necessary to assess the bridge through load testing and structural monitoring using Structural Health Monitoring System (SHMS) sensors. The sensors used are inclinometers, accelerometers, and strain gauges to evaluate the performance of the bridge structure. The object of this research is an existing steel railway bridge which has a span length of 31.2 m. This research was conducted by assessing the existing bridge to obtain the performance of the superstructure. The structural performance data from the SHMS sensor is compared with the structural performance data from modeling using software for structural analysis. The results showed that the deflection was less than the theoretical deflection. Strain values are less than the plastic strain limit. The natural frequency indicates that the structure is in moderate condition.

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Assessment of an Existing Steel Truss Railway Bridge with Operational Loads to Obtain Structural Performance

  • 会议论文

  • 发表日期：

    2026年

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  • Humman Abdul Hafidh,
  • Anis Rosyidah,
  • Jonathan Saputra,
  • I Ketut Sucita

摘要

Steel railway bridges have high durability. However, the condition of the bridge is susceptible to damage due to loads and the environment that affect the performance of the bridge structure. The performance of the steel railway bridge structure can be reviewed from the factors of deflection value, strain, and natural frequency. This research aims to analyze the performance of the existing bridge superstructure. On existing bridges, the actual camber is smaller than the planned camber, so it is necessary to assess the bridge through load testing and structural monitoring using Structural Health Monitoring System (SHMS) sensors. The sensors used are inclinometers, accelerometers, and strain gauges to evaluate the performance of the bridge structure. The object of this research is an existing steel railway bridge which has a span length of 31.2 m. This research was conducted by assessing the existing bridge to obtain the performance of the superstructure. The structural performance data from the SHMS sensor is compared with the structural performance data from modeling using software for structural analysis. The results showed that the deflection was less than the theoretical deflection. Strain values are less than the plastic strain limit. The natural frequency indicates that the structure is in moderate condition.