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基于光纤Bragg光栅传感技术,对洛阳瀛洲大桥结构健康监测系统进行了研究。介绍了瀛洲大桥健康监测系统的组成和各系统的功能,提出了基于FBG传感技术的长期监测与周期检测结合的监测策略,根据大桥构件在结构安全中的重要性和易损性确定了监测内容,重点对于大桥关键受力区-拱脚倒三角区进行了有限元分析,在此基础上进行了FBG传感布置。最后对于大桥运营结构预警与评估实施方法等进行了探讨。
Based on fiber Bragg grating sensing technology, Luoyang Yingzhou Bridge structural health monitoring system was studied. The composition and function of each system of the Yingzhou Bridge health monitoring system are introduced. A monitoring strategy combining long-term monitoring with periodic monitoring based on FBG sensing technology is proposed. According to the importance and vulnerability of the bridge components in structural safety, Monitoring content, focusing on the bridge for the key force area - arch inverted triangle area for finite element analysis, based on this FBG sensing arrangement. Finally, it discusses the method of early warning and assessment of the operation structure of the bridge.