基于分布式光纤传感技术的洞穴关键点的移位监测研究
Jiangdong Wang1, Ziming Xiong1, Sheng Li1
1State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, China.
Sensors (Basel, Switzerland)
|April 26, 2025
概括
光纤传感器可以通过测量周长应变来准确监测洞穴结构的位移. 这为复杂的工程环境中结构健康监测提供了可靠的方法.
科学领域:
- 地质技术工程 地质技术工程
- 土木工程 土木工程是指土木工程.
- 结构健康监测 结构健康监测
背景情况:
- 对关键点位移的准确实时监控对于洞穴结构安全至关重要.
- 传统的方法缺乏复杂环境所需的精度.
- 光纤传感器对光学和光谱变化具有很高的灵敏度.
研究的目的:
- 研究光纤传感器的应用,用于监测洞穴结构中的关键点位移.
- 建立一个可靠的模型来将传感器数据与结构位移相关联.
- 评估材料和结构性质对监测准确性的影响.
主要方法:
- 理论分析来得出一个位移-应变关系模型.
- 单轴压缩测试用于验证理论模型.
- 数字模拟用于探索材料和结构变化的影响.
主要成果:
- 获得和验证了关键点位移和周围应变之间的线性关系模型.
- 发现材料特性和结构特征会影响模型的参数 (斜率和截面).
- 光纤传感器准确地测量了周长应变,并在弹性范围内反映了位移趋势.
结论:
- 光纤传感器在土木和地质工程中显示出精确的结构健康监测的巨大潜力.
- 开发的线性关系模型为将这些传感器应用于洞穴结构提供了理论基础.
- 这项研究支持工程设计优化和通过增强监测能力的防灾工作.
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