在静态负载条件下的混凝土梁中检测纤维布拉格格传感器的可测性
Mohammad Hany Yassin1, Mohamad Hussein Farhat2, Michel Nahas2
1Dept. of Civil Engineering, College of Engineering, Australian University, West Mishref, Safat 13015, Kuwait.
Heliyon
|December 2, 2024
概括
纤维支格 (FBG) 传感器为桥梁的结构健康监测 (SHM) 提供了可靠的解决方案. 这些传感器在全尺寸光束测试中,与传统张力计相比,显示出更高的耐用性和准确性.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 传感器技术 传感器技术
背景情况:
- 由于负载增加和独特的设计,现代结构需要先进的监控.
- 基础设施老化需要强大的结构健康监测 (SHM) 以确保安全性和成本效益.
- 光纤传感器 (FOS) 技术,特别是光纤支架格子 (FBG) 传感器,为长期的SHM提供了一个有希望的解决方案.
研究的目的:
- 评估FBG传感器的性能和适用性,与传统的张力计 (SG) 相比.
- 评估FBG传感器在捕获大尺度光束中应变,负荷,偏移和温度方面的能力.
- 为了比较FBG传感器在静态负载条件下与SG的可靠性和弹性.
主要方法:
- 在静态负荷下测试了四个大型钢筋混凝土 (RC) 和CFRP增强梁.
- 使用VecTor2的非线性有限元素分析 (NLFEA) 来模拟光束行为.
- 比较来自同位FBG传感器和电气SGS的数据.
主要成果:
- FBG传感器在监测结构性能方面表现出可靠性和灵活性.
- 即使在标本达到最大负载后,FBG也提供了准确的读数,性能优于SG.
- 与传统的SG相比,FBG传感器表现出更大的耐用性和弹性.
结论:
- FBG传感器是结构部件长期SHM的可行和弹性技术.
- 在耐用性和持续的准确性方面,FBG传感器比传统的SG具有优势.
- 这些发现支持FBG传感器的集成,以加强对桥梁等关键基础设施的监控.
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