Bridge continuous deformation measurement technology based on fiber optic gyro

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• 作者：Weibing Gan ; Wenbin Hu ; Fang Liu ; Jianguang Tang ; Sheng Li ; Yan Yang
• 关键词：Long span bridge ; continuous deformation measurement ; FOG ; structural safety
• 刊名：Photonic Sensors
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：6
• 期：1
• 页码：71-77
• 全文大小：590 KB
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• 作者单位：Weibing Gan (1)
  Wenbin Hu (2)
  Fang Liu (2)
  Jianguang Tang (2)
  Sheng Li (2)
  Yan Yang (1)
  
  1. Key Laboratory of Fiber Optic Sensing Technology and Information Processing of Ministry of Education, Wuhan University of Technology, Wuhan, 430070, China
  2. National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan, 430070, China
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Chinese Library of Science
  Laser Technology and Physics and Photonics
  Microwaves, RF and Optical Engineering
  Measurement Science and Instrumentation
  Optics, Optoelectronics, Plasmonics and Optical Devices
  
• 出版者：University of Electronic Science and Technology of China, co-published with Springer
• ISSN：2190-7439

文摘

Bridge is an important part of modern transportation systems and deformation is a key index for bridge’s safety evaluation. To achieve the long span bridge curve measurement rapidly and timely and accurately locate the bridge maximum deformation, the continuous deformation measurement system (CDMS) based on inertial platform is presented and validated in this paper. Firstly, based on various bridge deformation measurement methods, the method of deformation measurement based on the fiber optic gyro (FOG) is introduced. Secondly, the basic measurement principle based on FOG is presented and the continuous curve trajectory is derived by the formula. Then the measurement accuracy is analyzed in theory and the relevant factors are presented to ensure the measurement accuracy. Finally, the deformation measurement experiments are conducted on a bridge across the Yangtze River. Experimental results show that the presented deformation measurement method is feasible, practical, and reliable; the system can accurately and quickly locate the maximum deformation and has extensive and broad application prospects. Keywords Long span bridge continuous deformation measurement FOG structural safety