复合桥梁梁架结构健康监测 基于分布式纤维传感 织品
Rui Wu1, Andres Biondi1, Lidan Cao1
1Department of Electrical and Computer Engineering, University of Massachusetts Lowell, Lowell, MA 01854, USA.
Sensors (Basel, Switzerland)
|July 11, 2023
概括
这项研究引入了一种新的光纤传感织品和安装方法,用于桥梁健康监测. 新系统成功测量了应变分布,克服了以前的安装挑战.
科学领域:
- 工程 工程师 工程师 工程师
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
背景情况:
- 分布式结构健康监测至关重要,光纤传感器提供高灵敏度和分辨率.
- 光纤传感器安装和可靠性的局限性阻碍了结构健康监测的广泛采用.
- 现有的方法在狭窄的空间 (如桥梁梁) 中面临挑战.
研究的目的:
- 介绍一款用于增强结构健康监测的新型光纤传感织品.
- 在桥梁梁内引入光纤传感器的改进安装方法.
- 为了证明传感织品在监测桥梁应变中的实际应用.
主要方法:
- 一种光纤传感织品的开发.
- 设计和实施一个修改过的滑板,用于在封闭的桥梁梁中高效安装传感器.
- 使用Brillouin光学时间域分析 (BOTDA) 进行应变监测.
- 在格里斯特磨坊桥上用多辆卡车进行装载测试.
主要成果:
- 光纤传感织品已成功安装在桥梁梁内部.
- 在加载测试期间,使用传感织品精确监测桥上的应变分布.
- 该系统有效地将应变应答与分离的装载地点区分开来.
- 修改后的滑动器可以在狭窄的空间中进行高效的安装.
结论:
- 开发的光纤传感织品为结构健康监测提供了可行的解决方案.
- 新的安装方法解决了光纤传感器部署的先前局限性.
- 光纤传感织品显示出在监控民用基础设施中的真实应用的巨大潜力.
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