一种基于光电共传感的新型智能CFRP电缆,用于结构的全过程预应力监测
Huanyu Yang1, Lian Shao1, Jinping Ou2
1School of Civil Engineering, Dalian University of Technology, Dalian 116024, China.
Sensors (Basel, Switzerland)
|June 10, 2023
概括
本研究介绍了一种光电共感应的碳纤维增强聚合物 (CFRP) 电缆,用于预应力混凝土结构中的实时应力监测. 开发的CFRP电缆有效监测电缆力和光束偏移,从而可以评估刚性降解.
科学领域:
- 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.
- 结构健康监测 结构健康监测
背景情况:
- 碳纤维增强聚合物 (CFRP) 电缆比钢具有优越的性能,包括高拉伸强度和耐腐蚀性,使其适用于预应力混凝土.
- 实时应力监测对于CFRP电缆在其整个使用寿命中安全有效地应用至关重要.
研究的目的:
- 设计和制造用于集成传感和结构应用的光电共传感CFRP电缆 (OECS-CFRP电缆).
- 为了评估OECS-CFRP电缆的传感和机械性能.
- 为了证明使用OECS-CFRP电缆在实际土木结构中实时预应力监测的可行性.
主要方法:
- 基于CFRP的分布式光纤传感器 (DOFS) 和基于纤维布拉格格 (FBG) 的纤维合干扰计 (FPI) 条的制造.
- 开发CFRP电缆固定技术的发展.
- 对OECS-CFRP电缆的传感和机械性能进行实验性表征.
- 在未结合的预应力钢筋混凝土 (RC) 梁中实施和测试OECS-CFRP电缆.
主要成果:
- 集成的DOFS和FPI传感器的静态性能指数符合土木工程的要求.
- 该OECS-CFRP电缆成功监测了预应力RC光束中的电缆力和中间距离偏移.
- 该研究使得在不同负载条件下评估预应力梁的刚性降解.
结论:
- 开发的OECS-CFRP电缆是预压混凝土应用中实时结构健康监测的可行解决方案.
- 综合传感系统为评估结构中CFRP电缆的性能和完整性提供了有价值的数据.
- 这项技术有助于提高使用先进复合材料的民用基础设施的安全性和生命周期管理.
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