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<p>Based on the abrupt change characteristics of the convective heat transfer coefficient on the underwater foundation surface above and below the riverbed, a temperature tracing method for scour monitoring around underwater bridge foundations was presented. An innovative multi-point thermal excitation monitoring system was developed. Through systematic experiments, the effects of tube offset distance, flow velocity and location of monitoring point on the thermal response of a point heat source were investigated. The results indicate that the thermal response characteristic parameter, which reflects the cooling rate, exhibits an S-shaped distribution pattern near the riverbed surface. The inflection point of this S-shaped function can be used to determine the elevation of the riverbed.</p>

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Scour monitoring of underwater foundations using abrupt changes in cooling rate

  • 期刊论文

  • 发表日期：

    2026年1月28日

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  • Jiang Chen,
  • Xiaodong Wei,
  • Feng Qiao

摘要

Based on the abrupt change characteristics of the convective heat transfer coefficient on the underwater foundation surface above and below the riverbed, a temperature tracing method for scour monitoring around underwater bridge foundations was presented. An innovative multi-point thermal excitation monitoring system was developed. Through systematic experiments, the effects of tube offset distance, flow velocity and location of monitoring point on the thermal response of a point heat source were investigated. The results indicate that the thermal response characteristic parameter, which reflects the cooling rate, exhibits an S-shaped distribution pattern near the riverbed surface. The inflection point of this S-shaped function can be used to determine the elevation of the riverbed.