Scholarlink

<p>The present study investigates ground-borne vibrations from urban metro systems on elevated tracks, a growing concern as cities expand. Real-time vibrations were recorded in northern India, induced by metro trains travelling at 58–65&#xa0;km/h on elevated structures. Vibration levels, quantified using peak particle velocity (PPV) and vibration velocity (VdB), were analysed in both time and frequency domains. A systematic filtering method removes ambient noise, reducing measured levels by 2–5 VdB. The study examines vibration attenuation perpendicular to the track and compares results with international standards. Findings identify wheel-rail interactions as the primary vibration source, with speed effects diminishing with distance. A modified Federal Transit Administration (FTA) model, calibrated with field data, improves predictive accuracy, correcting the standard model’s 20–30 VdB underestimation. The findings provide important guidance for urban planning and vibration mitigation near elevated metro systems and offer a practical framework for assessing vibrations in proposed metro projects.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Prediction of Ground-Borne Vibration from Elevated Metro Systems: Calibrated FTA Model and Case Study Insights

  • 期刊论文

  • 发表日期：

    2025年11月18日

查看全文
  • Namrata Bhattacharjee,
  • Bappaditya Manna,
  • Arnab Banerjee

摘要

The present study investigates ground-borne vibrations from urban metro systems on elevated tracks, a growing concern as cities expand. Real-time vibrations were recorded in northern India, induced by metro trains travelling at 58–65 km/h on elevated structures. Vibration levels, quantified using peak particle velocity (PPV) and vibration velocity (VdB), were analysed in both time and frequency domains. A systematic filtering method removes ambient noise, reducing measured levels by 2–5 VdB. The study examines vibration attenuation perpendicular to the track and compares results with international standards. Findings identify wheel-rail interactions as the primary vibration source, with speed effects diminishing with distance. A modified Federal Transit Administration (FTA) model, calibrated with field data, improves predictive accuracy, correcting the standard model’s 20–30 VdB underestimation. The findings provide important guidance for urban planning and vibration mitigation near elevated metro systems and offer a practical framework for assessing vibrations in proposed metro projects.