Scholarlink

The 2024 Noto Peninsula Earthquake, registering a magnitude of 7.6 on the Japan Meteorological Agency (JMA) scale, caused significant structural damage across the region, including to the Target Bridge. Despite undergoing repairs in 2022, the bridge exhibited notable issues post-earthquake, such as increased peak strain values, static strain values, and unusually large oscillations in strain data. These findings suggest potential deformation of the bridge girders and damage to the bearings, likely exacerbated by the earthquake. To evaluate the bridge’s performance, bridge weigh-in-motion (BWIM) techniques were employed. Sensors were strategically installed along the bridge girders to capture real-time strain data under normal traffic conditions, with high-frequency sampling providing detailed insights. Strain data collected in 2023 and 2024, calculated by impact factor, showed significant differences, underscoring the impact of the earthquake on the bridge’s structural integrity. Implementing these measures will help maintain the bridge’s operational capacity and resilience against future seismic events, ensuring safe passage for the daily traffic it supports.

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

Damage Conditions and Structural Performance Assessment for Small Bridges Subjected to Seismic Forces

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Le Trung Kien,
  • Toshihiko Minato,
  • Kenichi Satou,
  • Saiji Fukada

摘要

The 2024 Noto Peninsula Earthquake, registering a magnitude of 7.6 on the Japan Meteorological Agency (JMA) scale, caused significant structural damage across the region, including to the Target Bridge. Despite undergoing repairs in 2022, the bridge exhibited notable issues post-earthquake, such as increased peak strain values, static strain values, and unusually large oscillations in strain data. These findings suggest potential deformation of the bridge girders and damage to the bearings, likely exacerbated by the earthquake. To evaluate the bridge’s performance, bridge weigh-in-motion (BWIM) techniques were employed. Sensors were strategically installed along the bridge girders to capture real-time strain data under normal traffic conditions, with high-frequency sampling providing detailed insights. Strain data collected in 2023 and 2024, calculated by impact factor, showed significant differences, underscoring the impact of the earthquake on the bridge’s structural integrity. Implementing these measures will help maintain the bridge’s operational capacity and resilience against future seismic events, ensuring safe passage for the daily traffic it supports.