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This paper presents the cross-analysis of two experimental campaigns carried out on the same site of the Lyon metro, (i) during the excavation of the tunnel and then (ii) during the passage of the metro during its operation. The surface measurements show that the vibrations generated by the excavation of the tunnel are much stronger ( \(\approx \) 1 mm/s) than those emitted by the passage of the metro ( \(\approx \) 0.01 mm/s). In addition, the most energetic frequency range is lower for excavation ([0–40] Hz) than for operation (around 70 Hz).

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Lyon Metro Site: Cross-Analysis of the Vibratory Impact of the Construction and Operating Phases

  • 会议论文

  • 发表日期：

    2025年

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  • Antoine Rallu,
  • Etienne Bertrand,
  • Nicolas Berthoz,
  • Luca Lenti

摘要

This paper presents the cross-analysis of two experimental campaigns carried out on the same site of the Lyon metro, (i) during the excavation of the tunnel and then (ii) during the passage of the metro during its operation. The surface measurements show that the vibrations generated by the excavation of the tunnel are much stronger ( \(\approx \) 1 mm/s) than those emitted by the passage of the metro ( \(\approx \) 0.01 mm/s). In addition, the most energetic frequency range is lower for excavation ([0–40] Hz) than for operation (around 70 Hz).