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Application of FBG strain sensors in bridge structure monitoring system
Author(s): 
Pages: 15-19
Year: Issue:  1
Journal: Optical Instruments

Keyword:  fiber Bragg gratingstrain sensorbridge monitoring;
Abstract: 为了更准确了解桥梁结构变化情况,提出了一种新的检测方法.采用串联式组网方法,用光纤Bragg光栅(FBG)表面式应变传感器,对大桥左线衬砌裂缝及其长期变形进行监测.对裂缝存在区域的20个监测断面进行近一年的监测结果表明,对温度(测量记录最大温差6.4℃)进行补偿后,光纤Bragg光栅应变传感器的应变在正常范围内,表明在监测期桥梁结构稳定无异常变化.
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