An embedded strain sensor in anchor zone for bridge cable tension measurement based on FBG

Li Liu; Wei-min Chen; Peng Zhang; Jun Wu; Hao Liu

doi:10.1117/12.906317

23 November 2011 An embedded strain sensor in anchor zone for bridge cable tension measurement based on FBG

Li Liu, Wei-min Chen, Peng Zhang, Jun Wu, Hao Liu

Proceedings Volume 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 819917 (2011) https://doi.org/10.1117/12.906317
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

Abstract

To acquire the tension of the cable body, a novel measuring method with embedded FBG strain sensor in anchor zone is proposed. This paper describes the design details of the embedded FBG sensor. Based on the analysis of bridge anchor zone, crucial requirements of this sensor are known as package layer structure and the elasticity modulus of the package layer. And the epoxy with micro silicon powder is used as the package layer. Tensile tests are conducted with the tensile testing machine. The result shows that the linearity of sensor is 0.99974, the sensitivity is 2.74pm/N, and the repeatability is excellent. Finally, the sensors are mounted into the cable anchor zone for cable tensile test. The sensor has advantages in linearity and repeatability.

Citation Download Citation

Li Liu, Wei-min Chen, Peng Zhang, Jun Wu, and Hao Liu "An embedded strain sensor in anchor zone for bridge cable tension measurement based on FBG", Proc. SPIE 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 819917 (23 November 2011); https://doi.org/10.1117/12.906317

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